Document dnKGq8KMOD79VgO6GN3rQNYwb

ENGINEERING INFORMATION BULLETIN BIO Bulletin 810 Magnetic Overload R TIME DELAY TYPE Typ* A Dashpot Fluid (BLUE) PLAINTIFF'S EXHIBIT ASI-722 100 TRIPPING CURVE AT 40C Time -- Minutes August 1949 .UW*UKCC ALLEN-BRADLEY CO. wi.com... K-8I0-0IA 21390 IvUcHr >10 Mogwitic Ovtrlood laky OH Lovol Chock The doshpot should be checked periodically for a clean and sufficient supply of O'l in order to assure the correct tripping time. Remove the dashpot from the relay and pull the plunger up just enough to loosen the cover; then drop the plunger assembly back into the dashpot and check the oil level, it should just cover the three projections on the piston surface. Adjustmonf See the relay nameplate for core adjustment. 'If a faster tripping time is required the volve WITHOUT THE STEEL BALLS may be opened slightly. Coll Ramaval 1. Remove the dashpot. 2. Remove the nameplate, insulotor, and four flat head screws from the terminol block. This applies to the steel mounted relay only. 3. Loosen the set screw in the side of the relay frame and pull the core out. 4. Remove and replace the coil. A11. CO MIA KY *' 21391 BULLETIN 810 OVERLOAD RELAYS Calibration Lines Highest Current Setting Lowest Current Setting OASHPOT 1. When the relays are first installed, clean off all dirt and examine them carefully to sec that they have not been damaged in transit. 2. Remove the dashpot by swinging spring clamp forward. The dashpot will come off as a unit. 3. Remove the dashpot cover by pulling on core. Three or four light taps with the piston should be sufficient. 4. Fill the dashpot with silicone fluid, using that furnished with the relays. This should be done with the dashpot removed from the relay and the cover off, but with the piston and core in place. The surface of the fluid should be level with the tops of the three round projections on top of the piston "A". The fluid must he free from dirt or grit, and the dashpot and piston absolutely clean. 5. To adjust the current setting remove the dashpot. The lines on the core correspond with the ampere scale on the name plate. Screw the core until the line which corresponds to the desired ampere rating, as shown on the name plate, is flush with the edge of the dashpot. 6. To adjust time limit remove piston from dashpot. Piston has two diamond-shaped valves. The one without the steel balls is intended for the time limit adjustment. Caution:--Do not move . valve over opening containing the steel balls. To make relay act faster increase opening of valve "D"; which is without the steel balls. To retard the action decrease opening. The relays when shipped are set for maximum time limit which usually is the best condition. 7. IMPORTANT:--To protect motor against overloads the relays should be set at not higher than 120 per cent of normal full load current. rOKK S1MIS Milwaukee ALLEN-BRADLEY CO. Wisconsin MIMTCO IN U *. 21392 Rwwwal Parts Bulletin 810 Magnetic Overbad Relay rCAMINAl *010 OOWN SCRCW . rw *(4::tseiquis'idt.)ti insulator f U46I M il TCfRMml?NsAL iSiL.OiiCK OVCRLOAO COIL (QrStr 0y Rirl At Intfidtad at ffteunii) FR1MC A 11904 U M (For Sttf *!"* *| _________________ Ultt SlMMy 1WS A-)!)]* U M (far suit Fihi mtf Rtdesli* *tj ) f I J t* TIRttlNAL tLOCX aaouNTiite asm. * (XM-2UMS1w4Iittti)ta IliTC RAMIL MOUNTINO IAACKCTS (Speedy Scr< t t r----------ru *n COIL WAIMCR f 1S2S It.IS (? *#' (?) f ; HI S|1 Irif ::00 V)!t Aooi<cainm) SIT SCRCW iltS M il (Allen rt4) "**---- t RLUNSCR AIM. i 'i?u St.tt CORC IS6S4 111 i iw IS.M RISTON A DAIHROT Ul A X.J427S KRt *#*214102 Ul M 9C9O1 VCMR l| .. V : jus st {' Rigu icd) RCOCSTAL AIM. X 2W7S2 U.M OA0SH6KR4OT 1C0 L1A0ttR O X ]42*C Hit Concininc iinjt m Bottom ol Oitft Rot X-2U102 Hit flutt Bottom SiUCONC flUiO i imLivr.';:m' juipto'yi Ordering Information Discount Schedule E Your order cannot be entered unless the Following information is given- Part number, description of part and senes number of relay. Prices ore F.O.8. Milwaukee and subject to chonge without notice. Our minimum charge on on any order will be $5.00 net. Discount Schodulo I* Added mr chned oJnce previews liiue. May 1, 1958 Supersedes ?l 810-700 Doted July Id, 1937 Parti Lilt 810-700 21393