Document Yjj6X3bn6mDoLZKpBXg4q3nGy
model 3135
GOULDS PUMPS, !nc., Seneca Falls, N.Y., U.S.A.
SECTION I--INSTALLATION
I--A. LOCATION.
Pumping unit should be placed as close as practical to the source of supply. Always allow sufficient head room to remove the upper half casing of the pump and the rotating element. Floor space allotted to the pumping unit should be sufficient for inspection and maintenance.
I--B. SPACING.
The upper half casing is equipped with jacking bolts and is hinged to facilitate inspection. The pump should be set far enough from the nearest obstruction on the hinge side to allow the rotating element to be lifted without removing the hinge pin. Listed below are minimum recommended distances from pump centerline to nearest obstruction for each size of pump:
PUMP
3x 6-14 3x 8-14
4x10-14 4x12-14
4x10-18 4x12-18
6x12-16 6x14-16
6x12-20 6x14-20
8x14-20 8x16-20
DISTANCE 32" 36" 40" 44"
50" 52"
tion poured on a solid footing, using a one-three-five mix, of a liberal thickness to support the pumping unit is satisfactory.
2. Foundation Bolts:
(a) The location and size of the founda tion bolts is shown on the outline assembly drawing supplied for the pumping unit.
(b) Each holt should be installed with a pipe sleeve around it--to allow for adjustment. The inside sleeve di ameter should be 2/2 to 3 times the diameter of the bolt. Place a washer between bolt head and sleeve to hold bolt in position. See Fig. I. Stuff waste around foundation bolts to prevent grout from entering be tween the bolt and pipe sleeve.
(c) The foundation bolts should be of sufficient length so that they project through the nut approximately )i" after allowance has been made for grouting (%" to IX"), the thickness of the bedplate, and the thickness of the foundation bolt nut. See Fig. 1.
I--C. FOUNDATION.
1. The foundation should be substantial
in order to absorb any vibration and to form a permanent rigid support for the bedplate. A concrete founda
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3. Prepare Foundation for Mounting:
Prior to setting unit upon the foun dation, clean the top surface of concrete.
4. Mounting Unit on Foundation:
(a) Put the pumping unit in place on the wedges furnished. The wedges should be placed at four points, two below the approximate center of the pump and two below the approxi mate center of the driver. (See Fig. 2.) Some installations may require additional wedges near the middle of the bedplate.
(b) Be sure that coupling is discon nected between pump and driver.
(c) Tighten pump and driver hold down bolts.
(d) Adjust wedges to level baseplate in both directions. Check by placing spirit level on machined surface near feet. Baseplate must be proper dis tance above foundation for grouting.
(r to ir).
(e) Bring coupling halves into reasonable alignment by adjusting wedges under baseplate. Check alignment as
directed in Section I--C. Use addi tional wedges if required.
(f) After the wedges have been ad justed, tighten foundation bolts evenly but only finger tight. NOTE: Final tightening of founda tion bolts is done after grout has set 48 hours.
5. Grouting Unit on Foundation:
(a) Build wood dam around foundation as shown in Fig. 1 and wet top surface of concrete foundation thoroughly.
(b) Pour grout in hole provided in top of the bedplate. Use of a non-shrinking grout is recommended. The grout should be thin enough to flow out under the bedplate. A mixture of one part Portland cement to three parts sharp sand may also be used. Cement grout should not be so thin that the cement will separate from the sand.
(c) The grout should be puddled con tinuously as it is poured to expel the air and completely fill the space under the bedplate, to the level of the grout hole in the top of the bedplate.
(d) With a trowel, strike along the top of the wood dam to give a neat, finished appearance at this point.
(e) Allow grout to harden at least 48 hours.
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I--D. ALIGNMENT--INITIAL.
Alignment of the pump and driver through the flexible coupling is of extreme importance for trouble-free mechanical operation.
If the driver was mounted at the factory, the unit was in alignment before it left our assembly department. However, in transit and subsequent handling, this factory alignment was probably destroyed; and, IT
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IS NOW NECESSARY TO RE-ESTABLISH THE ALIGNMENT. As directed in Section I--C 4 (d & e) (page 2), only approximate alignment was obtained by wedging under bedplate before grouting.
The following are suggested steps to establish the initial alignment of the pumping unit: (NOTE THAT THIS IS AN INITIAL ALIGNMENT. THE FINAL ALIGNMENT IS DONE AFTER THE UNIT HAS BEEN RUN UNDER ACTUAL OPERATING CONDITIONS. THE FINAL ALIGNMENT PROCEDURE IS OUTLINED IN SEC TION III--E AND MUST BE FOL LOWED).
1. Be sure coupling halves are disconnected as instructed in Section I--C 4 (b) (page 2).
2. Tighten foundation bolts.
3. Tighten pump frame hold down bolts. Turn shaft several revolutions by hand. If pump is binding,' loosen leveling screw jam nuts (420) and loosen leveling screws (419). Snug both leveling screws finger tight. Tighten each leveling screw with a small wrench not more than % of a flat until shaft turns freely by hand. DO NOT TIGHTEN MORE THAN % OF ONE FLAT TOTAL. Snug jam nuts. Shim under pump casing foot about J" thick. Note these shims must be notched for leveling screw and drilled for hold down bolts. Insert and tighten hold down bolts. SHAFT MUST TURN FREELY BY HAND.
4. Tighten motor hold down bolts.
5. Check angular misalignment--shaft axis concentric but not parallel--by in serting a taper gauge or feeler at four points on the circumference of coupling halves at 90 intervals. See Fig. 3. The unit will be in angular alignment when the measurements show the coupling faces are the same
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distance apart at all points. The "gap" between the coupling halves should be checked at this time. This depends on the type of coupling used and this information will be found in the instructions for the specific make of coupling furnished. These instruc tions are furnished separately and also include directions for installing, lubrication, etc. Adjustment for ob taining angular alignment and "gap" is obtained by loosening the driver hold-down bolts and shifting or shimming driver as required. Tighten driver hold-down bolts after angular alignment and correct "gap" are secured.
6. Check parallel misalignment--shaft axis parallel but not concentric--by lay ing straight edge across both coup ling rims at top, bottom and both sides. See Fig. 4.
The unit will be in horizontal parallel alignment when the straight edge rests evenly on both halves of the coupling at each side.
size of pipe and fittings should be carefully selected and of sufficient size to keep the friction losses as low as practical.
3. Piping must not be connected to the pump until the grout has thoroughly hardened and the foundation bolts as well as driver and pump hold down bolts have been tightened. Section I--H (page 5).
Thin shim stock should be used to estab lish parallel alignment under the driver feet; however, in some in stances, shims may be required under the pump feet.
7. Bear in mind always that alignment in one direction may alter the align ment in another. Check through each alignment procedure after making any alignment alteration.
I--F. PIPING--SUCTION.
1. Properly installed suction piping is of extreme importance for troublefree centrifugal pump operation.
(a) The suction pipe should be as short and direct as possible. ALWAYS KEEP THE DIRECTION OF FLOW IN A STRAIGHT LINE .
I--E. PIPING--GENERAL.
1. All piping must be supported indepen dently of the pump. The piping should always "line-up" naturally with the pump flanges. NEVER DRAW THE PIPING INTO PLACE BY USE OF FORCE AT THE FLANGED SUCTION AND DIS CHARGE CONNECTIONS OF THE PUMP!
2. The piping, both suction and discharge, should be as short and direct as pos sible. Avoid all unnecessary elbows, bends and fittings, as they increase the friction losses in the piping. The
(b) The suction pipe should be as large or larger than the pump suction.
(c) Increasers, if used, should be eccen tric and preferably at the pump suction flange.
(d) A CENTRIFUGAL PUMP SHOULD NEVER BE THROTTLED FOR CAPACITY ADJUSTMENT ON THE SUCTION SIDE.
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2. Installations With Pump Below Source of Supply--Suction Head or Flooded Section:
(a) A gate valve should be installed in the suction line to permit closing the line for pump inspection and maintenance.
(b) Keep suction pipe free from air pockets. 1. Piping should be level or slope gradually downward from the source of supply. 2. Always use eccentric increasers, not concentric.
(c) The size of entrance from the stock chest should be no smaller than the suction pipe.
3. Installations.With Pump Above Source of Supply--Suction Lift:
A pump for paper stock should never be installed under a suction lift. The static head above the pump center line must exceed the suction line friction by a sufficient amount to in sure flow into the pump.
I--G. PIPING--DISCHARGE.
1. A gate valve should be installed in the discharge line. The gate valve is re quired for regulation of flow capacity and for inspection and maintenance of the pump.
I--H. CONNECTION OF PIPING.
Connect suction piping. Rotate the pump shaft by hand several complete revo lutions to be sure that there is no binding and
that all parts are free. Recheck alignment as described in Section I--D (page 2.) If the connection of the piping causes unit to be out of alignment, correct suction piping to relieve strain on the pump.
Loosen lower adjusting nuts (357) on telescopic discharge connector (411) and place 2 pieces of 2" long keystock (%" for standard dimensions) between machined surfaces under plugged holes in discharge flange. Set upper adjusting nuts so keystock will just slip in. Leave keystock in place and tighten lower adjusting nuts (357).
Connect discharge pipe. When piping is completed, loosen upper and lower adjusting nuts and check for deflection of piping by removing keystock. Adjust pipe hangers to correct. If piping sags, adjust pipe hangers until keystock can be removed by hand. Use additional pipe supports if re quired. Adjusting units may be left loose allowing telescopic joint to act as an expan sion joint on discharge line after piping is properly supported.
I--J. CHECK OF ROTATION.
The direction of rotation is marked on the pump casing. Make sure that driver rotates in the same direction. On electric motors, jog starting switch to be sure wiring is connected for correct rotation. Be sure that coupling is disconnected.
I--K. CONNECTION OF COUPLING.
Connect coupling, following instruc tions for the particular make of coupling furnished. This data is supplied separately, giving complete instructions for connection, lubrication, alignment and maintenance.
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SECTION II--PREPARATION FOR OPERATION
II--A. PUMP BEARINGS.
The pump bearings in standard construction are grease lubricated. Sufficient lubricant is inserted at the factory for 2000 hours operation.
An alternate construction with oil lubricated ball bearings can also be furnished to order. Fill both bearings until the oil level is Ys" from the top of the oil fitting. Use a good quality, clean SAE 10 oil.
II--B. DRIVER BEARINGS.
Check to be sure the driver bearings are properly lubricated.
II--C. STUFFING BOXES.
Pumps are furnished with packed type stuffing boxes. The standard packing is Y" square plaited braided asbestos thoroughly lubricated with mineral grease before braid ing. The packing is recommended for hot and cold water, weak acids, mild chemicals and all general services.
The packing is included in the bag of fittings attached to the pump, and is cut to required length. The combination water seal ring and stuffing box bushing (125) is installed in the stuffing box at the factory. Check to be sure it is seated properly. Wipe out the stuffing box with a clean cloth to remove any dirt.
Insert 4 rings of packing against the stuffing box bushing (125). See Sectional Assembly Section VI--D. Fit each ring of packing carefully, trimming ends as required to insure a good joint without overlapping. Stagger the joints.
Place gland halves (107) in position and bolt gland halves together with gland
bolts (328). Insert gland into stuffing box positioned to engage stuffing box gland swing bolts (229) in slots on ends of gland. Place washers on swing bolts, and tighten nuts finger tight.
Be sure gland is not cocked.
II--D. CONNECTION OF WATER SEAL PIPING.
All stock pumps should have the stuffing box sealed with clean water. A pres sure of not less than 30 psi is sufficient to pro vide a supply of clean water to lubricate the packing and provide some flow from the stuffing box into the pump.
Pipe a line from plant clean water supply with valve to the upper Y" pipe tap in the upper half casing at the stuffing box. See Fig. 6.
Pumps handling dirty liquids con taining abrasives should be connected for "in and out" sealing. In addition to the clean water supply line above, a valved relief line should be connected from the lower X" pipe tap to drain. The relief line allows any ab rasives that may enter the stuffing box to be flushed out before impigning on the packing and scoring the sleeve. See dotted lines on Fig. 6.
II--E. CONNECTION OF DRAIN PIPE.
Connect outlet from stuffing box (located in under side of pump casing in back) to drain. Connect overflow from bed plate (located at pump end of bedplate) to drain. Openings are tapped for pipe.
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II--F. CONNECTION OF FLUSHING PIPE.
Pump casing is provided with bosses for flushing connections behind both sideplates. Bosses are tapped only if so ordered, or they can be tapped in the field for 3" pipe. Flushing is sometimes required to re move sour stock after a prolonged shut down. Remove the upper and lower plugs and flush
with clean water under normal pressure from the top on both sides until the discharge runs clear.
Pumps used on various color stocks may require frequent flushing between color runs and justify permanent flushing lines. A shut-off valve is required. Be sure to use unions between valve and pump to allow easy disassembly of top half casing.
CONNECTION OF WATER SEAL PIPING
PLANT CLEAN WATER SUPPLY
IN" CONNECTION
241-85
/// "OUT" CONNECTION
h1
jtj TO WASTE Fig. 6
SECTION "A-A"
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SECTION III--STARTING PUMP
III--A. PRIMING.
The pump casing and suction pipe must always be full of liquid before the pump is started. No external air release is required, due to the self-venting design.
If pump is run dry, the rotating parts within the pump may seize to the stationary parts as they depend on the liquid being pumped for lubrication.
A priming system is not required as a paper stock pump should never be installed under a suction lift.
Ill--B. VALVE SETTINGS AT STARTING.
Open the valve in the plant clean water supply line to the stuffing box to pre vent stock from entering. Open the gate valve in suction line. SUCTION VALVE MUST ALWAYS BE FULLY OPEN WHEN EVER PUMP IS OPERATING. Open dis charge gate valve about %, allowing air to be expelled from pump. Remove W plug from discharge flange to insure pump casing is full of liquid before starting. (Self-venting design of pump does not require additional venting on top of pump casing). Start pump and open discharge valve. ALWAYS REGU LATE CAPACITY WITH DISCHARGE VALVE.
Ill--C. ADJUSTMENT OF STUFFING BOX GLAND.
On stock pumps open valve in plant clean water supply line before starting pump. See Section II--D. Some throttling may be required if pressure exceeds 30 psi. With pump running at rated speed, stuffing
box glands can be adjusted. Draw gland nuts up evenly and only one-sixth of a turn at a time, allowing sufficient time between ad justments for the packing to adjust itself and the effect on the leakage to be observed. If any sign of heating is evident, shut off the pump and allow the boxes to cool. Leave plant water line open to aid in cooling. Several starts may be necessary before the boxes run cool. Do not back off the gland nuts on a hot box as this will usually result in liquid leaking between the outer edge of the packing and the stuffing box bore. It must be borne in mind that it takes newlyinstalled packing some time to "run in" and that .during this period, frequent attention and careful adjustments are necessary. See IV--A (page 10) for final adjustments of gland.
If liquid pumped is dirty an "in and out" water seal is required to flush abrasives out of the stuffing box before they impinge on the packing and score the sleeve. See Section II--D page 6. Open valve in plant clean water supply line. Throttle valve in "out" line until a small, steady stream is ob served. Follow procedure for adjusting pack ing as outlined above.
Ill--D. ALIGNMENT--FINAL.
Final alignment can only be accom plished after unit has been run under actual operating conditions for a sufficient length of time to bring the unit up to operating temperatures.
After this warm-up period has elapsed, stop the unit and immediately dis connect the coupling and check the align ment.
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Follow the alignment procedure as outlined in I--D (page 2). As cautioned in I--D 7 (page 4), changing alignment in one direction may alter the alignment in another. Check thru each alignment procedure after making any alignment change.
Misalignment may be due to casing distortion from pipe strain. Correct suction piping to relieve strain on pump before checking alignment.
Check distortion in discharge pipe by inserting keystock between machined surfaces in telescopic discharge, Section I--H, page 5. Adjusting nuts may be left loose allowing telescopic joint to act as an expansion joint after piping is properly supported.
Ill--E. DOWELING.
The pump and driver should be doweled to the baseplate after installation is complete and the unit is in correct final
alignment. Four taper dowel pins with a taper of 34" to the foot are included in the bag of fittings attached to the pump.
Group "S" pumps use four No. 6 taper dowel pins. The diameter at the large end is approximately 11/32" and the recom mended drill size 9/32".
Group "M" pumps use four No. 8 taper dowel pins. The diameter at the large end is approximately 34" and the recom mended drill size 13/32". Drill through two diagonally opposite feet of the pump and driver into the bedplate. Use a reamer with a taper of 34" to the foot. Ream out the drilled holes so that dowels extend well into the bedplate but project above the pump and driver feet. Tighten jam nuts on leveling screws in foot under pump casing. No dowel ing is required.
To determine the group of a par ticular size pump, see interchangeability list, Section VI--D (page 16).
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SECTION IV--OPERATION
IV--A. STUFFING BOX.
1. Stuffing Boxes With Packing Rings--
Periodically inspect stuffing box to see that there is sufficient leakage to lubricate the packing and maintain a cool box. Never draw up packing so that the stuffing box heats, as this will cause damage to both packing and sleeve. Always draw up gland nuts evenly and when pump is run ning.
After pump has been in operation for some time and the packing has been completely run in, at least 40 to 60 drops per minute of the liquid should be allowed to trickle from the stuff ing box at all times for cooling and lubricating the packing and shaft sleeve.
2. Stuffing Boxes With Packing Rings-- With Clean Water Seal:
The same precautions described above apply. In some cases throttling of the plant clean water supply line may be required (if the pressure ex ceeds 30 Psi.) Never throttle the
' clean water supply into the stuffing box as a substitute for proper adjust ment of packing--a steady flow from the seal cage into the pump is re quired to prevent entrance of stock into the packing.
3. Stuffing Boxes With Packing Rings-- "In" And "Out" Connection:
The same precautions as described in 1 above apply. A leakage of 40 to 60 drops per minute is required to cool
and lubricate the packing and shaft sleeve. The valve on the "out" con nection should be opened sufficiently to allow a steady stream of liquid to flow to waste, flushing out dirt and abrasives before they can impinge on the packing and score the sleeve. The valve in the plant clean water supply line should not be throttled unless the pressure is considerably above 30 psi.
IV--B. OPERATING AT REDUCED CAPACITIES.
Do not operate a centrifugal pump at greatly reduced capacities or with dis charge gate valve closed, because the energy required to drive the pump is con verted into heat. If this condition exists over a long period, the temperature of the liquid in the pump may increase until the boiling point is reached. If this occurs, the rotating parts are exposed to vapor with no lubrication and they may score or even seize to the stationary parts; and furthermore, if running clearances have enlarged due to wear, seizure may not take place. Continued operation under these conditions may create an explosive hazard due to the confined vapor under high pressure and temperature.
To guard against possible damage, protective devices are available, such as:
1. Liquid temperature relay or thermo stat which will shut-off the unit if the liquid temperature in the pump exceeds a pre-
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determined maximum. This device guards against possible damage due to running the pump against a closed valve.
2. Constant open by-pass orifice between the pump discharge and any check or regu lating valve in the discharge line. The liquid through the orifice is returned to the suction source. The amount of liquid by passed is a function of input horsepower and the allowable temperature rise. This device also is insurance against damage due to run ning the pump against a closed discharge valve or very low- flow conditions.
3. Bearing temperature relay which will shut the unit down if the bearing tempera ture exceeds a predetermined maximum.
4. Low suction pressure control which will shut off the unit should the suction pressure
drop below a pre-established minimum. A centrifugal pump should never be
throttled for capacity adjustment on the suction side.
IV--C. OPERATING AT REDUCED HEAD.
On motor driven pumps, when dis charge head or pressure is allowed to drop considerably below the rated point for any length of time, the motor should be watched for heating because the pump capacity in creases rapidly with reduced head, as does horsepower consumption. If this condition is likely to persist, arrangements should be made either to manually or automatically throttle the discharge valve to build up head to a safe point.
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SECTION Y-TROUBLE CHECK LIST
V--A. NO LIQUID DELIVERED.
1. Priming--Casing and suction pipe not completely filled with liquid.
e2. Speed too low.
3. Discharge head too high. Check total
head (particularly friction loss). 4. Impeller or suction pipe opening com
pletely plugged. 5. Wrong direction of rotation. 6. Air pocket in suction line. 7. Suction piece packing not tight--allow
ing leakage of air into pump casing. 8. Air leak in suction line. 9. Not enough suction head for % stock.
V--B. NOT ENOUGH LIQUID DELIVERED.
1. Priming--casing and suction pipe not completely filled with liquid.
2. Speed too low.
3. Discharge head higher than anticipated.
Check total head (particularly fric tion loss). 4. Impeller or suction pipe opening par tially plugged. 5. Wrong direction of rotation. 6. Air pocket in suction line. 7. Suction piece packing not tight--allow ing leakage of air into pump casing. 8. Air leak in suction line. 9. Not enough suction head for % stock. 10. Mechanical defects: Impeller clearance too great. Impeller damaged.
V--C. NOT ENOUGH PRESSURE.
*1. Speed too low. 2. Air or gases in liquid.
3. Impeller diameter may be too small.
4. Mechanical defects: Impeller clearance too great. Impeller damaged.
5. Wrong direction of rotation.
V--D. PUMP WORKS A WHILE AND THEN QUITS.
1. Leaky suction line. 2. Stuffing box packing worn--or water
seal plugged--allowing leakage of air into pump casing. 3. Air pocket in suction line. 4. Air or gases in liquid. 5. Not enough suction head for % stock. 6. Impeller plugged. 7. Excessive amounts of additives in chest ahead of pump may cause gas for mation on stock fibres. 8. Excessive regulation of discharge valve --check total dynamic head against pump design head. Cut impeller diameter to correct over-design of impeller.
V--E. PUMP TAKES TOO MUCH POWER.
1. Speed too high. 2. Head lower than rating, pumps too much
liquid. 3. Mechanical defects:
Shaft bent. Rotating element binds. Stuffing box too tight. Pump and driving unit misaligned. 4. Wrong direction of rotation.
V--F. PUMP LEAKS EXCESSIVELY AT STUFFING BOX.
1. Packing is worn or not properly lubri cated.
2. Packing is incorrectly inserted or not properly run in.
3. Packing is not right kind for liquid handled.
4. Shaft sleeve scored. "When connected to electric motors, check whether motor wiring is correct and receives full voltage.
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SECTION VI--CARE AND MAINTENANCE
VI--A. LUBRICATION--GREASE LUBRICATED BEARINGS.
1. As specified in Section II--A, Bearings are lubricated at the factory for 2000 hours or three months service. DO NOT ADD GREASE AT TOO FRE QUENT INTERVALS. It is sug gested that additional or replacement lubricant be added only after 2000 hours operation or three month intervals.
While shaft is revolving, remove relief plugs and insert grease through "Alemite" fittings (193) into bear ing housings until grease appears through relief holes. DO NOT ADD ADDITIONAL LUBRICANT AFTER GREASE APPEARS THROUGH RELIEF FITTING. Pump should run 30 minutes before replacing relief plugs.
2. The lubricant should be renewed in the housings at least once annually. Following an overhaul operation and when bearing housings contain no lubricant, proceed to grease the bearings as follows: Remove relief plugs and insert grease through "Alemite" fittings (193) into bear ing housing until grease comes out the relief holes. Turn shaft by hand several revolutions in both directions
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during the greasing operation. DO NOT ADD ADDITIONAL LUBRICANT AFTER GREASE APPEARS THROUGH THE RELIEF FITTING. Pump should run 30 minutes before replacing relief plugs.
3. The ball bearing grease should be of a sodium or lithium base, NGLI #2 consistency. DO NOT USE GRAPHITE.
4. Bearing Temperatures -- All bearings op erate at some temperature above that of the surrounding atmosphere, un less cooled. Heat is generated within the bearing due to rolling friction, and the drag of the race. Roller bearings tend to operate at a some what higher temperature than ball bearings.
Do not use the human hand as a ther mometer. A temperature which feels "hot" varies from 120 to 130F. depending on the individual. Above this temperature, the human hand is worthless in estimating tempera ture. Grease lubricated bearings can be operated safely at temperatures up to at least 200F. Bearing tem peratures up to 160F. are extremely safe. Determine the temperature accurately by inserting a ther mometer into one of the grease relief
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holes. This temperature should be recorded In a convenient location. A stable temperature, no matter how hot it may feel to the human hand, is not necessarily an indication of danger so long as it does not exceed the upper limit of the lubricant.
A sudden increase in temperature is an indication of danger and a signal to investigate. One shot of grease should be added to the bearing, but if this does not reduce the temperature immediately, no additional grease should be added. Remove all three grease relief plugs and allow excess grease to bleed off for a period of at least one hour. The unit should also be checked for unnecessary loads, such as coupling misalignment or improper packing adjustment.
Occasionally when pumps are first started, the bearings seem to run ex tremely hot. This high temperature is frequently caused by grease seals, not the bearings. As soon as the seals are seated, the temperature will drop to a normal level.
VI--B. LUBRICATION--OIL LUBRICATED BEARINGS.
1. As specified in Section II--A, an alter nate construction with oil lubricated ball bearings can also be furnished to order. Both bearings should be filled with a good quality clean SAE 10 oil to within from the top of the oil fitting.
2. Oil level should be checked daily and 011 added to maintain a level within Is" from the top of the fittings.
3. Oil should be drained and replaced every 600 hours or not less than every 4 weeks. Remove drain plugs from both ends of bearing shell. Turn shaft by hand several revolu tions in both directions to dislodge oil from retainer pockets. Replace plugs and fill with good quality clean SAE 10 oil as instructed above.
VI--C. REPACKING STUFFING BOXES.
1. To remove stuffing box gland assembly: Back off nuts and washers flush with ends of gland swing bolts (229), and swing bolts out of slots in gland (107). Remove nuts from gland bolts (328) joining gland halves, and lift the upper half gland out of the stuf fing box. Remove lower half gland bolts (328). This now affords unob structed access to the stuffing box for repacking.
2. Remove all 4 rings of packing with the aid of a packing hook.
3. Remove all foreign matter from stuffing box.
4. Install stuffing box packing as described in II--C (Page 6).
NOTE: Frequent repacking may be caused by deeply grooved shaft sleeves. Remove the upper half casing as described in VI--F and remove the packing from the stuffing box. If the shaft sleeves are found to be deeply grooved in the packing area, they should be replaced as it is only possible for the packing to do an efficient job when the sleeve surface is relatively smooth.
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SECTIONAL VIEWS VI D
Ball Bearings, Oil Lubricated Group "S" Shaft Sleeve Construction
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PARTS LIST
Item No.
Per Pump No. R,q'd.
100
1-up
100
1-low
10! 1
106
1 set
107 1
111 1
119
1
!22t
1
125 1
131 1
134 1 136 1
140
1
161 142
1
1
167
1
169
1
169 1
170 I
171 1
172
1 sat
173 1
174 1
17S 1
176 1
166 1
193 3
211 1
228 1
229
2
247 1
315 1
328 2
332
1
333
1
345
1
351 2 Halve*
356
2
357 4
3 59
2
360
1
361 410
2
1
411
412 '
1 1
413
2
414
2
415
2
416 417
2
2
416
1
419 2
420
2
421 1
422
4-6
423 4-6
428
1
432
1
459
4
PART NAME
Casing Impeller
Stuffing Box Gland (Split)
Bearing Cep
Bearing End Cap (Outer)
Shaft
Stuffing Bo* Bushing
Pump Foot
Bearing Shell
Bearing Loci Nut
Bearing End Cap (Inner)
Water Throwor {Inner}
Water Thrower (Outer)
Impeller Lock Nut
Ball Bearing (Inboard)
5haft Sleeve
Discharge Sideplate
Suction Piece Ring
Suction Piece Packing
Suction Piece Gland
Suction Piece
Hand Hole Cover
Suction Sideplate
.
Shaft Flange
Grease Fitting
Gasket (Shaft Sleeve to Shaft Flange)
Frame
Stuffing Bo* Swing Bolt
Drip Basin
Discharge Elbow
Gland Bolt (for Joining Gland Halves)
Graaie Saal (Outer)
Grease Seal (Inner)
Shaft Flange Key
Gasket (Casing Parting)
Disch. Connector Adjusting Stud
He* Nut (Disch. Connector Adjust. Stud]
Bearing Shell.Adjust. Screw (H*. Hd Tap Bolt]
Gasket (Inner Bearing End Cap)
Snap Ring
Roller Bearing (Thrust Bearing)
Discharge Connector
O-Ring
Casing Hingo Bolt
He*. Nut (Casing Hinge Bolt)
Her. Jam Nut (Casing Hinge Bolt)
Hand Hole Cover -- Swing Bolt
Suction Piece -- Swing Bolt
Casing --- Jack Bolt
Levelling Screw
Jam Nut (Levelling Screw]
Casing Hinge Pin
Impeller Stud
Nut (Impeller Stud)
Gasket (Shaft Flange to Impeller)
Gasket (Hand Hole Cover) Flat Hd. Mach. Screw (Shaft Sleeve to Sliaft fringe]
8r*. Hd. All Iron
MATERIAL
All Bn.
All 316 S.S.
All Iron AH Bn. S.S. Trim S.S. Trim
INTERCHANGEABILITY BY GROUP AND CASINC CLASS
Group-S
Group-M
1003
1003
1103
316
1003
1103
1106 1103
1000 1 1000
1106 'h" x W ASBESTOS | 1103 1 316 |
316 1000
| 1103
s s
SAE 4140 1103 | 1000
1106 1 1000 1106 | 1000
1000 1000 AISI 303 1103 ) 316
1000
1000
STEEL
1000
1000
1000
AISI 303
STEEL
1106
1106
316
SAE 4140 AISI 303
1000
1103
316 1000
1106
S
s s s s s s s s s s s s
1000
1103
316
1000
1103
3
%" x %" ASBESTOS
3
1000
1103
316
1000
1103
3
1000
1103
316
1000
1103
306130$
1000
1103
316
1000
1103
M
1106 1106
1000 1000
1106 1106
316
1000 316
1106
3
S
STEEL 1/64" ASBESTOS
M S
1000
S
STEEL - NONE
316
1103
316
STEEL NONE
316 1103
M
S
1000 STEEL
1103 BRASS
316 AISI 303
1000 STEEL
1103 BRASS
3 M
S
AISI 303
S
s
0.014S" DUPLEX PAPER
1000
'
STEEL
STEEL STEEL
0.0145" DUPLEX PAPER
STEEL
5TSEC
I 1103 1 316 1 1000 1 1103
HYCAR-BUNA "N"
STMT"
STEEL
STIEl- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - STM -----------------------------
STEEL StEEL STEEL
'
STEEL
- jygu;
BRASS BRASS
bRa55
STEEL BRASS
STEEL
BRASS 1/64" A Sbestos
W RUBBER
StLEl j MASS |
316 316
iu
s s
M
s s s
3
3
S
s s
M M
M
S
S
s
S
s s
M
S
o2
s s
s s s s s s s s s s s s s
4 4
4 4101412
M
4
s
M
S s
M S
4
M S
S S
s s
M
s
S
$ 4
4
s s s
M M M
S S
s s s s
M
s
o
V
M M
M 6 6 M M M M M M M M
6
4
4
4 4 4101412
M
4X
6
M M M M 4 4 M M M M
S S
M M M 4 4 M M M M M M M M M 6 6 6 M
-> o
oo
oo
w -O
40
8. BS. 8L
M MM M MM
M 6
6 M M M M M M M M 6 6
6 6 6
6121614
M
6
6 M M M* M 6
6
M M M M
M
S M M M M M M M M 8 8L
6 6 6
612 1614
M 6X
8 M M M M 8 6 M M M M
M
8 M M M M M
M M M
8
8,0S, 8L
8 8 8
814 lei*
M
6, as. BL 8
M M M M 8
a
M M M M
MM
6
MM M MM M M MM M M
6 6 6 M Not Required
M
M M M
NOTES
t On Bn. Ftd. and all Iron Iasi ileave contraction shaft Is of SAE 4150, flame hardened thru stuff. Bo* to 550 Brinell. On AISI 316 and S.S. Trim less sleeve construction shaft is of AISI 316.
* These parts differ on "G" series to provide 14" from shaft CL to bottom of frame.
METALS ANALYSIS
1000 -- Cast Iron. Conforms to ASTM A 278-59T Class 25. 1003 -- Cast Iron. Conforms to ASTM A 278-59T Class 30. 316 -- Conforms to AISI Type 316 Stain less Steel (Wrought) or ASTM A 296-60 CF-8M and AC! CF-8M (Cast).
CONSTRUCTION DETAILS
Weight -- Brome Fitted Bert Pump
7801795 920)950 1200 H 230 525jl560 60011635 1925|2000
Casing Thickness -- Volute Casing Thickness -- Sidewalls Maximum Diameter Solids Stuffing Bo* --* Bore Stuffing Bo* -- Depth (to Stuffing Box Bushing) Stuffing Bo* -- Pecking She Stuffing Bor *-- No. of Peeking Rings Shaft Die. et Impeller Sheft Die. in Sheft Sleeve Sh.ft Dit. t Coupling End
11/16"
3/4"
5/8"
1-1/16" | 2"
3-1/4"
1-9/16" 1-7/8" 1.6755"
13/16" 11/16"
7/6" 3/4"
1" 7/8"
1-1/2"
3"
2"
3-3/4" 2-1/8" 1/2"x 1/2"
4
2" 2"
2.3755"
I" 7/8" l%".3",4"
Outside DU. of Sheft Sleeve or Sheft less Sleeve M-Group Only)
1.8750" 2-1/4"
2.3750" 2-3/4*
Roller Bearing (Thrust Bearing
Ton. 50S023F2
Ton. 70SD23F2
Bail Bearing (Inboard] Ball Bearing (thrust Bearing Optional)
MRC-310S or Equ.l M RC-741OD 8 or Equ.l I
MRC-314R or Equ.l MRC-741406 or Equ.l
Marimum Suction Pressure
100 PSI
Maximum Total Pressure
150 K!
py.NO
Cu%
S"%
PL*/.
Z"%
ns%
1103 86-88 5.5-6.5 3.5-5.5 1.0-2.5 0.6-1.0 --
1106 84
9
8 - - 0.10-0.1 s
16
VI--E. ADJUSTING IMPELLER CLEARANCE.
1. Disconnect coupling.
2. Remove bearing cap nuts. Jack and re move 2 dowel pins from bearing cap (111). Lift off bearing cap.
3. Rotate bearing shell counter clockwise (opposite to direction of pump rota tion) until bearing shell adjusting screws (359) clear shoulders of frame (228). (See dwg. 74979 below). Re move coupling end adjusting screw (359).
4. Replace bearing cap (111) and snug nuts to hold shaft in correct position.
5. Rotate bearing shell back clockwise until pump end adjusting screw just passes parting. Push bearing shell into pump until rotor is firmly against suction sideplate (176). Measure distance between adjusting screw and side of bearing shell seat with a feeler gauge.
6. Cut and place washers of 0.004" to 0.005" shim stock under adjusting screw until clearance between screw
and bearing shell support is 0.012" to 0.015". Tighten adjusting screw firmly before using feeler gauge.
7. Pull bearing shell back (toward cou pling end) until head of adjusting screw is firmly against side of sup port head bearing shell seat. Turn shaft several turns by hand. Impeller must not rub against suction sideplate.
8. Remove bearing cap (111) and replace and tighten coupling end bearing adjusting screw (359). File head off coupling end adjusting screw until bearing shell can be rotated back past the parting of bearing shell seat. Heads of both adjusting screws must fit snugly against sides of bearing support seat.
9. Replace bearing cap on studs and posi tion with dowel pins. Tighten one nut on each stud finger tight.
10. Snug the nuts with wrench, tightening evenly and alternately.
11. Snug lock nuts on bearing cap studs evenly with a wrench.
Dwg. 74979
17
VI--F. DISMANTLING OF PUMP.
1. Drain pump. 2. Shut off and disconnect any auxiliary
piping. 3. Disconnect coupling. 4. Remove gland assembly from stuffing
boxes. See VI--C. 5. Remove bolts connecting discharge
elbow (315) and upper half pump casing. 6. Telescope discharge elbow (315) into discharge connector (411) by loosen ing upper nuts (357) on both sides and then tightening lower nuts (see photo below). Remove and preserve the gasket.
10. Loosen jam nut on jacking screw (418) and tighten screw to complete breaking flange, giving 3 point sus pension.
11. Attach chain fall thru cored hole in web under discharge flange and continue raising by means of jacking screw (418), (see photo below). On smaller size pumps, upper half cas ing may be hinged back by inserting a rod or pipe thru cored hole in web of upper half casing instead of using a chain fall.
7. Remove parting bolts connecting upper and lower half casing.
8. Jack and remove taper dowel pins. Re move upper half casing gland bolt from suction piece gland (173).
9. Loosen top nuts (414) on hinge bolts (413) until they are flush with end of bolts (see photo below). Raise upper half casing off sideplate locks by tightening lower hex nuts (415) evenly. Raise upper half casing until snug against top nuts (414). Use a knife to carefully separate the part ing gasket from the upper half casing flange. Preserve gasket.
18
12. Continue raising upper half casing with chain fall until free, then lower on hinge until pump is completely open.
13. Jack and remove 2 dowel pins from bearing cap (111) by use of hex nuts provided on top of pins. Remove nuts from bearing cap parting studs.
Lift off bearing cap. Photo below shows unit ready for removal of rotating assembly.
14. Lift rotating assembly from pump care fully. Suction sideplate (176) is not attached to rotor. Lift rotating ele ment off bearing shell seat. Grasp suction sideplate (176) firmly and pivot on edge of lower half casing, rolling rotating element out. Suction sideplate may be left in pump while lowering rotating element. Place
rotating element on padded supports which will not injure shaft sleeves or jam discharge sideplate.
15. Note the distance from the end of the shaft to the face of the pump half coupling so that the coupling half can be correctly positioned when re assembled. Pull the coupling half from pump shaft.
16. Remove coupling key.
17. Slide discharge sideplate (170) back to bearing shell and remove cotter pins or stainless steel locking wire from castellated impeller stud nuts (423).
NOTE: On Group "S" pumps 4 flat head machine screws (459) must be re moved and shaft sleeve (169) push ed against bearing shell to provide access to impeller stud nuts.
18. Remove impeller stud nuts. Impeller can now be removed. Preserve gaskets.
PLATE DRILLING
PUMP V niA "R* ma
5X6 "14 5X8 *14
4*
5i`
4X10*14 4X12-14
4'
f
4X10*18 4X12*18
6X12*16 6X14*16
?
i*
6X12*20 6X14-20
F
8X14-20 8X16-20
F
19
\ /' A/
19. Inspect the condition of the impeller for excessive erosion, especially on the vane faces and ejector vanes on the backside of the impeller.
20. Remove the discharge sideplate (170) by slipping it over the shaft flange (186).
21. Inspect the surface of both the dis charge (170) and suction (176) sideplates for erosion, pitting or ex cessive wear.
22. Replace worn parts with new ones where needed. NOTE:--replacement is al ways required when capacity as ob served at overflow box cannot be restored to normal by readjustment of impeller clearance as directed in VI--E (page 17).
23. Bend retaining tang of impeller lock nut washer back with screw driver, and remove impeller nut (162) with spanner wrench.
24. By use of a suitable puller, one which pushes against shaft (see Fig. 7 page 19), remove shaft flange (186). Slide shaft sleeve (169) off shaft.
25. Remove key from keyway.
peller puller. Details of a recom mended puller, capable of removing impeller sleeve flange and radial bearings on both groups of pumps is shown in Fig. 7 page 19. Care should be used. Puller bar must be square with shaft so that pressure is applied evenly to the circumference of the inner race of the bearing. A steady pressure must be applied to the puller screw. NEVER USE HAM MER BLOWS TO DRIVE SHAFT THROUGH BEARINGS. Protect bearings from dirt or other contami nation.
30. Bend tang of thrust bearing lock nut washer back with screw driver. Re move bearing lock nut (136) with spanner wrench.
31. Slide bearing lock washer from shaft.
32. Drive thrust bearing (410) off coupling end of shaft with a suitable driving sleeve which contacts inner race only, keeping bearing square at all times.
VI--G. REASSEMBLY OF PUMPS.
The following directions are for use when the pump is completely dismantled and it is desirable to reassemble.
26. Slide stuffing box bushing (125) off shaft.
27. Loosen set screws and remove inner (161) and outer (162) water slingers.
28. Remove cap screws on each bearing end cap (160 and 162) and remove end caps from shaft, being careful not to injure grease seals (332 and 333).
29. Push radial ball bearing (409) off im peller end of shaft by pulling pump end of bearing shell evenly with im
1. Check shaft to see that it is not bent or otherwise damaged, and that it is also smooth and clean. If shaft is bent it must be straightened or re placed.
2. Bearings should spin smoothly and even ly. If bearings are not in first class condition, they should be replaced. If new bearings are being used, they should not be unwrapped until ready for installation and should not be cleaned or washed unless the pro tective wrapper has been broken and dirt allowed to enter the bearing.
20
If old bearings, or new ones that have been allowed to become dirty, are being used, clean thoroughly before installing as follows: Use a clean pail or receptacle. Pour into it one or two quarts of clean, water-free kerosene. Dip the bearing into the kerosene and spin slowly. Repeat until all traces of grease or oil have been removed. Now blow dry with clean filtered compressed air, hold ing the two races together so that they do not rotate but allowing the inner race to rotate a few turns now and then to dislodge the kerosene from the retainer pockets. If the bearing is very dirty, it is advisable to rinse it in a second bath of clean kerosene. When the bearing has been blown dry, oil it immediately with a good grade of clean machine oil; especially the race grooves and balls or rollers to prevent corrosion or rust.
3. The bearing shell (134) and the bearing end caps (119 and 160) should be flushed and cleaned. Inspect grease seals (332 and 333) in bearing end caps and replace if worn.
4. It is important that all parts are free from dust and dirt. This is extremely important, as the life of a ball or roller bearing can be drastically re duced if contaminated with even a small amount of dirt. All bearing operations should be done in as dustfree an atmosphere as possible.
All tools, as well as the hands should be kept clean.
5. To replace the double row coupling-end thrust bearings (410), oil shaft at bearing seat and slide bearing over shaft as far as possible by hand.
Place a pipe or sleeve against the bearing, being sure that it rests only
on the inner race. Tap evenly until the bearing is seated firmly against the shaft shoulder. Care should be taken not to mar the shaft.
6. Insert the bearing lock washer, pressing tang into shaft keyway until firmly against bearing.
7. Oil shaft threads lightly and snug bear ing lock nut (136) against lock nut washer. Tighten firmly with spanner wrench. Rotate shaft to locate lockwasher tang which is positioned ex actly opposite slot on lock nut. Seat tang securely into slot with drift pin. If necessary, tighten lock nut slightly to match tang with slot. Do not loosen lock nut to position.
8. Place bearing shell (134) on shaft from impeller end and slide over outer race of thrust bearing. Be sure the bearing outer race is started squarely and does not bind.
9. To replace radial bearing (409) oil shaft at bearing seat and slide bearing on shaft as far as possible by hand. Place bearing on shaft with raised shoulder on inner race inward. Start bearing squarely on shaft and tap against inner race with sleeve as described in 5 above. Slip the outer race into the bearing shell (134) and guide in evenly to prevent binding. Seat inner race securely against shoulder on shaft.
10. Wipe a small amount of grease on the grease seal lips (332 and 333) in bearing end caps (119 and 160).
11. Oil shaft extension and slide bearing end caps (119 and 160) with gasket in place, being careful not to injure grease seals (332 and 333). [Gasket used on inner bearing end cap (160) only]. With both lugs on bearing shell (134) pointing diagonally up-
21
.Os
\ //
ward, turn end cover so that the alemite grease fitting is at the top. The grease relief plugs should be slightly below horizontal centerline on left side when facing coupling end of shaft for accessibility. Tighten bolts snugly and evenly.
12. Slide water throwers (161 and 162) on shaft with tongue in to about 1/32" from bearing caps. Lock in place with set screws.
13. Slide stuffing box bushing (125) on shaft with drilled water seal passage towards the bearing and machined tongue toward impeller end of shaft.
14. Oil shaft extension and insert impeller key (345) in shaft keyway. A silicone base grease is recommended when stainless steel sleeves are used.
15. Slide shaft sleeve (169) on shaft. Slide shaft flange (186) and gasket on shaft and tap in place with lead maul. Tap evenly around the hub near the shaft. DO NOT TAP AGAINST SEALING SURFACE ON THE FLANGE.
16. Insert impeller nut lock washer, pressing tang into shaft keyway until firmly against shaft sleeve hub.
19. If impeller diameter has been cut in the field, the impeller should be stati cally balanced, and if possible, dy namically balanced. Balancing can be effected by grinding on the under side of impeller vane near periphery.
20. Position gasket over impeller studs and place impeller (101) on shaft by pushing impeller studs (422) thru drilled holes in shaft sleeve or flange (169 or 186).
21. Snug castellated impeller stud nuts (423) evenly to avoid "cocking" im peller. Tighten securely and drill one 9/64" hole thru each stud between slots in nuts for %" cotter pins, or stainless steel locking wire. On Group "S", position gasket and bolt securely shaft sleeve (169) to shaft flange (186) with flat head machine screws (459).
22. To replace pump half coupling on shaft, screw a /2"-13 stud approximately hi" longer than the length of the coupling hub into the end of the shaft. Insert the coupling key in shaft. Put oil or white lead on the shaft end and in the coupling bore. Place the complete pump half coupling in position over the stud and align the key with the keyway.
17. Oil shaft threads lightly and snug im peller lock nut (167) against lock nut washer. Tighten firmly with spanner wrench. Rotate shaft to locate lock washer tang which is exactly opposite slot on lock nut and seat tang firmly in slot with drift pin as described in 7 (page 21).
18. Slide discharge sideplate (170) onto shaft over shaft sleeve (169) with fully machined surface facing out wards.
Place washers over the stud and against the coupling hub and pull coupling half on with nut placed on the stud. Locate the coupling half in the same position on the shaft as it was before dismantling.
23. Smooth up and clean sideplate, stuffing box bushing and bearing shell seats in upper and lower half casing. The casing and bearing housing are pre cision bored so that hand scraping and fitting of the sideplates, stuffing
22
box bushing or bearing shells are not required. Inspect parting and dis charge piece gaskets and if tom or otherwise damaged cut new gaskets of plain duplex paper 0.0145" thick. Do not use asbestos gaskets as graphite binder will bleed and dis color stock. The gaskets should be removed while assembling rotating element.
24. Support rotating element in a level po sition in sling and lower carefully into lower half casing. Be sure that, discharge sideplate and stuffing box bushing line up with recesses in the lower half casing. Locks on bearing shell and sideplates should be up ward.
Grasp suction sideplate firmly and roll outwards by pivoting on edge of lower half casing. Lower rotating element until impeller is correctly positioned against suction sideplate, then roll evenly into casing and lower complete rotor into place.
25. Rotate sideplates downward until locks seat against projection in lower half casing near hinge bolts. When the upper half casing is bolted in place locks will be held against rotation. Seat stuffing box bushing firmly against shoulder in bottom of stuff ing box.
26. Check the rotating element for free turning by rotating slowly in one di rection and then the other.
The sideplates and the stuffing box bushing should be seated in the lower half casing, and should remain stationary when the shaft is rotated. If they ride on the impeller or sleeve, it may indicate that the bearing seat, bushing or sideplate surfaces in the lower half casing have not been
properly cleaned of scale or other foreign matter, or that there is too much eccentricity in the element, due to a bent shaft or other causes. If any of the above are evident, cor rect the cause and continue to as semble as follows:
27. Remove coupling end bearing shell ad justing screw (359) and set clear ance approximately between im peller (101) and suction sideplate (176), as described in VI--E page 17. Do not replace coupling end ad justing screw until pump is com pletely assembled and final adjust ment has been made.
28. Place the parting gaskets in position on the lower half casing with the edges flush with the stuffing box bore and tight against the sideplates, the stuff ing box bushings and the suction piece ring (171). A small amount of grease on the lower half casing will hold the gaskets in place.
29. Hinge bolts (413) should be in place be fore upper half casing (100) is raised into position. Top nuts (414) should be flush with end of hinge bolts and hex jam nuts (415) should be tightened snugly against lower flange of upper half casing. Casingjack bolt (418) should project well above parting.
30. Attach chain fall thru cored hole in web under discharge flange and raise upper half casing (100) on casing hinge. Continue raising until it hangs freely on hinge. Lower care fully the upper half casing, guiding by suction and discharge sideplates until in place against casing jack bolt (418). Casing should settle into po sition without resistance as jack bolt is backed off.
23
Back-off hex jam nut (415) from under side of casing hinge pin (413) until upper-half casing rests evenly on parting and slip dowel pins in place.
Check the rotating element for free turning and, if no binding is ap parent, tighten casing parting bolts alternately on each side of the pump starting from the center. The shaft should turn freely, after all bolts are tightened.
31. Insert and bolt stuffing box swing bolts (229) with threaded stem offset toward shaft. Replace and snug up per half casing bolt in suction piece gland (173).
32. Place gasket on pump discharge flange and position discharge elbow (315) by loosening lower hex nuts (357) on discharge connector stud (356). Tighten bolts firmly on alternate sides.
33. Back off upper and lower hex nuts (357) allowing discharge connector (411) to function as an expansion joint.
34. Check clearance between impeller and suction sideplate and complete as sembly as outlined in VI--E Page 17. Shaft must turn freely by hand without rubbing.
35. Repack stuffing box and replace gland assembly as outlined in II--C page 6.
36. Check coupling alignment as outlined in I--D Page 2.
37. Connect coupling as outlined in I--K page 5.
38. Grease pump bearings as outlined in VI--A page 13.
39. Connect water seal and auxiliary piping as outlined in II--D thru F page 6.
40. Follow directions in Section III for in itial operating conditions and for starting pump.
VI--H. CHANGING LIQUID END MATERIALS OR REPLACING CASING.
Pump liquid end parts are available in various materials suitable for most liquids. Parts are available in cast iron, bronze and AISI 316 stainless steel. Parts can also be fur nished on order in other sand cast, machin able alloys.
It is not necessary to replace the complete pump when a change in process requires different materials. Only the liquid end need be replaced with parts precision machined to fit with existing standard frame.
When liquid end parts are to be re placed, the complete pump should be un bolted from the bedplate and moved to a machine shop for maximum convenience.
A. Disassembly of Liquid End.
1. Follow instructions 1 thru 6 VI--F Dis mantling of pump.
2. Loosen and remove hold down bolts from frame (228) and pump foot (131).
3. Jack and remove 2 dowel pins from frame.
4. Remove bolts connecting suction piece (174) flange to suction piping.
5. Sling pump securely and raise pump from bedplate with a chain fall, sliding sideways out from under dis charge pipe. Move pump to machine shop where proper tools are most convenient.
6. Complete disassembly of pump as de scribed in VI--F as required.
7. Free suction piece gland (173) by re moving hex nuts from studs in lower half casing.
8. Sling suction piece (174). Loosen nuts on suction piece swing bolts (417) and swing back against casing. Re-
24
move suction piece by pulling hori zontally out of lower half casing.
9. Jack and remove straight dowel pins aligning frame (228) with lower half casing (100). Use %"-20 bolt, washer and spacer piece.
10. Remove nuts from studs and pull casing from frame.
11. With lower half casing on side remove bolts holding pump foot (131) to casing and remove.
B. Reassembly of Liquid End.
1. Bolt pump foot (131) to lower half casing.
2. Place new lower half casing on frame (228) by pushing studs thru drilled holes. Fasten nuts or studs finger tight, and locate by inserting straight dowel pins with tapped ends out ward. Tighten nuts securely.
3. Insert drip basin (247) into frame recess under stuffing box. Down snout seats into hole in rear of lower half casing. (Drip basin required only when liquid end material is all-bronze or alloy).
4. Place suction sideplate (176) into re cess in suction side of lower half casing with locking lug visible.
5. Lower complete rotating element into lower half casing as outlined in VI--G Reassembly of Pump. Rotor must turn freely by hand. Set suction sideplate clearance approximately as outlined in VI--E before completing assembly of upper half casing.
6. Place suction piece swing bolt (417) on studs, place washer on top of swing bolt and tighten nuts securely.
7. Complete assembly of upper half casing. Push suction piece swing bolt (417) back against casing.
8. Seat suction piece ring (171) on suction piece (174). Ring must be started evenly and driven squarely by tap ping with a lead maul alternately on opposite sides until seated squarely against shoulders. Be sure to place suction piece gland (173) on suction piece before driving ring.
.9. Sling suction piece and push squarely into place, guiding suction piece gland onto 2 studs in lower half casing. Suction piece gland is posi tioned with 2 drilled holes opposite studs in lower half casing and slot opposite tapped hole in upper half casing.
10. Position suction piece swing bolts (417) in slots and tighten nuts against washers finger tight.
11. Start nuts on suction piece gland studs in lower half casing.
12. Seat suction piece firmly and squarely by tightening nuts on 2 suction piece swing bolts.
13. Insert 3 rings of %" square packing, seat ing each ring as it is installed and staggering the joints.
14. Insert hex head gland bolt into upper half casing and draw gland up evenly but not tight.
15. Check clearance between impeller and suction sideplate and complete as sembly as outlined in VI--E page 17. Shaft must turn freely by hand without rubbing.
16. Position pump on baseplate with dowel pins and tighten hold down bolts.
17. Align pump and motor as directed in Section I--D, adjusting leveling screws if required.
18. If casing material is changed replace discharge elbow (315) on discharge piping. Install gasket and bolt dis charge elbow (315) to discharge nozzle.
25
19. Connect suction and discharge piping as directed in Section I--H page 5.
20. Repack stuffing box as directed in Sec tion II--C page 6.
21. Connect auxiliary piping and drains as directed in II--D tliru F page 6.
22. Follow directions in Section III for starting pump.
VI--J. OVERHAUL OF PUMP.
The pump should be opened and the interior inspected for wear and excessive clearances approximately once each year. The period may vary, depending on oper ating conditions and severity of service. See Section VI--F page 18, for disassembly and Section VI--G page 20, for reassembly of pump. The following items should be checked:
1. Sideplate Clearance:
The clearances between the impeller and the sideplates are set approximately at 0.012" to 0.015" on the suction side and an equal clearance on the discharge side. There are no set rules on maximum clearances, as long as the above clearance is maintained on the suction side of the pump by re adjustment as described in VI--E.
Sideplates should be replaced whenever surface inspection indicates erosion, pitting or excessive wear. Replace ment is always required when ca pacity as observed at overflow box cannot be restored by readjustment of impeller clearance.
2. Fit of Impeller Flange on Shaft.
These parts are machined for a push fit. The shaft sleeve (169) or shaft flange (186) is bored 0.000" to 0.0015" larger than the shaft and should tap easily on the shaft. If the sleeve or flange does not tap on
readily, the bore and shaft should be inspected to see that they are free from foreign matter or burrs. The fit of the key in the keyway should also be checked to see that it is not causing binding. The key should have a sliding fit on the sides and should have clearance at the top.
3. Clearance Between Shaft Sleeve (169) and Stuffing Box Bushing (125).
The original diametric clearance is 0.023" to 0.032". If this clearance has in creased to more than 0.050", the shaft sleeve, and at times, the stuffing box bushing should be replaced.
4. Condition of Shaft Sleeve.
If the surface at the packing area is deeply grooved, the sleeve should be replaced.
5. Condition of Shaft.
Check shaft for straightness. If bent, it should be straightened. If otherwise damaged, it should be replaced.
6. Condition of Impeller.
Check the impeller and replace if any of the following conditions exist:
(a) Excessive erosion, especially on the inlet of vanes.
(b) Excessive wear on sides of impeller due to rubbing against sideplate.
7. Condition of Roller or Ball Bearings.
If the bearings are worn or damaged so that they become loose or are noisy or rough when rotated, they should be replaced.
VI--K. SPARE PARTS.
To insure against possible long and costly "down-time" periods, especially in critical services, it is advisable to have spare pumps or spare parts on hand.
1. When spare pumps are not available, one complete rotating element should
26
be maintained for every one to three pumps of each size in operation.
(a) The rotating element consists of suction and discharge sideplates, im peller, shaft, shaft flange and sleeve, stuffing box bushing, bearing, bear ing shell, end caps, and water slingers assembled, less pump half coupling.
It is not necessary to duplicate spare parts inventory where both Model 3135 and Model 3105 pumps are used. For Model 3105 right hand pumps Model 3135 rotating elements are com1 pletely interchangeable except stuff ing box bushing and stuffing box gland. For Model 3105 left hand pumps correct rotation impellers are also required.
VI--L. INSTRUCTIONS FOR ORDERING SPARE PARTS.
Repair orders will be handled with the minimum of delay if the following direc tions are followed:
1. Give the Model No., Size of the pump and serial number. These can all be obtained from the name plate.
2. Write plainly the names, part numbers and materials of the parts required. These names and numbers should agree with those in the parts list, (Section VI--D page 16).
3. Give the number of parts required.
4. Give complete shipping instructions.
27
brief look at a few of
GOULDS PUMPS
The largest plant of its kind in the world plus over 100 years' experience in pump manufacturing--that's what equips us to answer all your liquid-handling needs. You have a wide line of Goulds pumps to choose from. Complete details on any pump are available in the Bulletins indicated. Write for your copy.
Standardized Chemical Pumps
19 pump sizes with same overall length,
2V/2 in. Capacities to 1600 GPM, heads
to 750 ft. TDH. Working pressures to 375 PSIG. Standard in Ductile Iron. 316 stainless steel. Gould-A-Loy 20. Handles liquids to 500 F. Maximum inter changeability of parts and dimensional interchangeability of models give you greatest flexibility and- coverage.
BULLETIN 725.1
Model 3755
Frame Mounted Centrifugals
Built in 25 sizes, with capacities up to 3800 GPM and heads up to 400 ft. Designed for standard electric motor drive; readily adaptable for belt drive. A substantially built line for general and special applications with many new improvements.
BULLETIN 715.1
Goulds-Pfaudier Glassed Pump
Model 3708 Model 3706 (not illustrated)
Revolutionary new pump designed for handling corrosive liquids. Ail parts in contact with liquid are glass-fused to metal. Handles all acids except hydro fluoric, and ail alkalies to pH 12. Five sizes, with capacities to 700 GPM, heads to 150 ft.
BULLETIN 725.2
Model 3655
Close-Cupld Centrifugals
Single-stage pumps built in 25 sizes with a capacity range from 5 to 3800 GPM and heads up to 400 ft. Embody top horizontal discharge, closed im peller, machined stuffing box, fully protected shaft. Wearing parts easily renewable.
BULLETIN 710.1
Double-Suction Centrifugals
Capacities from 100 to 6400 GPM. Heads up to 575 ft. Three shaft and rotating parts assemblies provide for 40 sizes and 144 pump combinations. Horizontally split casing.
BULLETIN 721.6
Model 3189
Open Impeller Centrifugals Highly efficient open impeller pumps available in 13 sizes for both motor and belt drives. Capacities up to 3180 GPM, with heads up to 290 ft. at 1750 RPM. Well suited for irrigation, gen eral industrial processes, and slurries.
BULLETIN 720.4
Model 3316
Two-Stage Centrifugals Ten sizes provide heads up to 1000 ft., capacities to 3000 GPM, depending on heads. Horizontally split casing. Op posed impellers.
BULLETIN 722.6
Models 3330-3360
Multi-Stage Centrifugals
Medium- and high-pressure multi-stage pumps. Model 3330 is furnished in sizes from 3 to 8 in., 2 to 6 stages, with capa cities ranging from 40 to 2100 GPM, heads to 1000 ft. Model 3360 furnished in 3, 4, 6, and 8 in. sizes, up to 8 stages, with capacities ranginq fro.m 50 to 2600 GPM, heads up to 3400 ft.
BULLETIN 722.1 and 722.4
Model 2520
Centripetal Scavenger Pump
Centripetal action lets it pump liquid, air, liquid and air. Use it for transfer, cleaning-up. or pilot plant operations. Com pact, light-weight, portable. All-iron or stainless steel con struction. Capacities to 60 GPM, heads to 80 ft.
BULLETIN 725.6
Vertical Pumps
SUMP (Model 3171) For pit depths to 20 ft. in 6 inch increments. Both wet and dry pit types available in capa cities up to 3180 GPM, heads to 190 ft. Single and duplex units. Full automatic control. Mod ern design using stand ard parts permits quick shipment at most eco nomical cost.
BULLETIN 726.2
PROCESS (Model 3171-PR)
Especially designed for han dling corrosive liquids in the chemical process and allied in dustries. Normally supplied in 316 stainless steel construc tions, but materials to suit user's requirements can be furnished on application.
BULLETIN 726.1
28
PUMPS
INCORPORATED Seneca Falls, New York, U.S.A.
specialists in pumps
MODERN MANUFACTURING EQUIPMENT AND METHODS + 1,000 PUMPMINDED PEOPLE = GOULDS PUMPS, a company with 113 years of experience
As manufacturers of pumps ... AND PUMPS
ONLY . . . Goulds is able to provide the pump user with a highly specialized service. Unen
cumbered with other products, Goulds research and design engineers, application engineers
and field sale representatives are truly pump specialists.
Goulds Pumps are produced in this large plant, again, one which is devoted exclusively to pump manufacture (more than 544,000 square feet of plant floor space). Keeping pace with
changes in industrial processes, new designs, sizes, and materials are continuously being
introduced. This is particularly true in the field of corrosive liquids handling. Through the use
of modern stainless steels, glassed metal, ductile iron and other alloys, liquids are being handled by Goulds Pumps that a few years
ago were considered impractical to pump be cause of their high temperature, corrosive or
abrasive factors, or their heavy consistency or density characteristics.
BRANCH SALES OFFICES ATLANTA BATON ROUGE
BOSTON BUFFALO CHARLESTON, W.VA. CHICAGO CLEVELAND DETROIT
HOUSTON LOS ANGELES NEW YORK PHILADELPHIA PITTSBURGH PORTLAND, ORE. SAN FRANCISCO ST. LOUIS TULSA
EXPORT GOULDS PUMPS International, Inc. 260 Madison Ave. New York 16, N.Y.
CANADA BELOIT-SOREL, LTD. BELOIT-GOULDS DIVISION Sorel, P.Q.
7505-EL Sup. 7302-EL
Printed in U.S.A.
