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LiftMaster MJ Support Question

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Question posted by Anonymous-81904 on November 1st, 2012

How Do I Install New Limit Nuts?

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Related LiftMaster MJ Manual Pages

MGJ User's Guide Manual - Page 2

...door. • Or ANY other control (automatic or manual) is shipped from the factory in standard C2 wiring type (factory default). Your new operator is installed. (See accessories page for Monitored Safety Devices) • Timer to close. • Open... the close limit switch. C2 WIRING TYPE WITHOUT MONITORED SAFETY DEVICE A (Factory Default) • Momentary contact to open and stop with...

MGJ User's Guide Manual - Page 5

... Emergency Disconnect CAUTION To prevent possible SERIOUS INJURY or DEATH from the chain retaining bracket before the door will Door open door falling rapidly and/ or unexpectedly. • NEVER use emergency release handle to disengage trolley ONLY when door is clear of the chain retaining bracket mounted on one side or the other of emergency...

MGJ User's Guide Manual - Page 7

... should close .) 4. Press remote control button. 2. Door should close if photo eyes are installed. WARNING To avoid SERIOUS PERSONAL INJURY or DEATH from obstruction, check safety devices. Remove the obstruction. 5. Door should open . 3. Press OPEN button. (The door should open . 3. If the limits are working properly. Open the door. 2. In C2 wiring the remote control will flash...

MGJ User's Guide Manual - Page 8

...adjustment DOOR OPENS/CLOSES Operator requires adjustment TOO FAR DOOR REVERSES UNEXPECTEDLY Safety device activated RADIO FUNCTIONALITY NO RESPONSE REMOTE CANNOT BE PROGRAMMED POOR RANGE Remote control is not programmed Low battery Low battery Low battery Possible radio interference FIX ➤ Check circuit breaker. ➤ Verify photo eyes are aligned. ➤ Contact your installing...

MJ5011E QuickStart-2008 Manual - Page 1

... appropriate side of the operator. The disconnect chain may now be installed below the door shaft, and as close door properly. Follow ALL local electrical codes. 11 Adjust the limit switches to open and close to locate a professional installing dealer in the electrical box enclosure. b The door may be mounted either above floor) b A hoist engagement sash chain...

MJ5011E QuickStart-2008 Manual - Page 2

... a professional installing dealer in the operator. Visit www.LiftMaster.com to complete programming (LED will become enabled after the next open limit after a preset time, adjustable from 5 to 60 seconds. The TTC will go out). A SAFETY DEVICE IS HIGHLY RECOMMENDED Push Direction Limit Nut Will Move During Travel SAFETY CLOSE Limit Nuts Retaining Plate 11 Limit Switches OPEN...

MJ5011E Installation-2008 Manual - Page 5

... that all components were provided. 3 ^OPEN ^CLOSE O STOP 1 2 ITEM 1 2 3 4 5 6 DESCRIPTION QTY Operator 1 Warning labels 2 3-Button station 1 Hoist hand chain (models MH and MHS only) 1 Door/Operator chain 1 Door sprocket 1 4 6 5 NOT SHOWN Installation Manual 1 Quickstart Guide 1 User's Guide 1 Caution Label 1 Installation Hardware Box 1 Complete with manual hoist...

MJ5011E Installation-2008 Manual - Page 13

... to operator • Turn clutch nut to secure clutch nut 13 Depress retaining plate Adjust OPEN limit Retaining Plate OPEN Limit Nut OPEN Limit Switch CLOSE Limit Nut AVERTISSEMENCLTOSE Limit Switch ATTENTION Increase Door Travel Adjust CLOSE limit Increase Door Travel Decrease Door Travel AVERTISSEMENT AVERTISSEMENT Decrease Door Travel SAFETY Limit Switch NOTE: When retaining plate is...

MJ5011E Installation-2008 Manual - Page 17

... or DEATH, install reversing sensors when: • The radio is used . If the Monitored Safety Device is removed, the operator will stop if the pressure to close is released before reaching the close limit. AVERTISSEMENT ATTENTION C2 WIRING TYPE WITHOUT MONITORED SAFETY DEVICE A (Factory Default) • Momentary contact to open and stop with...

MJ5011E Installation-2008 Manual - Page 20

... control will flash 7 times on power up. Allow the door to fully close . TEST 3-BUTTON CONTROL STATION ATTENTION 1. Press CLOSE button. (The door should open direction.) 2. Press OPEN button. (The door should move in C2 mode. (The door should stop .) TEST LIMIT ADJUSTMENT 1. TEST THE SAFETY DEVICES (IF INSTALLED) 1. IMPORTANT NOTES: • Do not leave power to the...

MJ5011E Installation-2008 Manual - Page 22

... free and brake pads are actuating freely and releasing properly. B) Remote control not compatible ➤ Obtain qualified LiftMaster remote control device. DOOR OPENS/CLOSES Limits not adjusted properly TOO FAR ➤ Adjust limits. POOR RADIO RANGE A) Low battery in radio receiver compatible with all connections. Allow to ensure brake lever is not programmed ➤...

MJ5011E Installation-2008 Manual - Page 23

...Brown** Orange Purple Yellow Grey Safety Limit Switch Open Limit Switch Grey Close Limit Switch 23 AANTUX ANT J2 TTC LEARN STOP CLOSE OPEN LED 1 2 3 45 6 7 LMEP1 LMEP2 COM INTRLK STOP CLOSE OPEN OPEN CLOSE STOP Remove Jumper to the ...to flash 7 times when power is applied or cycled to install external door interlock. Door height or speed may exceed the range the operator can be...

MJ5011E Installation-2008 Manual - Page 24

... K5 3 SERVICE KITS ITEM PART # DESCRIPTION K1 K72-33872-1 Limit Switch Shaft Kit Complete with: Limit shaft, limit nuts, limit bearings, limit sprocket, washers, compression ring, roll pin and e-ring K2 K76-34283 Limit Switch Kit Complete with: Limit nut retainer, switch plates, backup plate, depress plate, limit switches (3), standoffs, screws and locknuts K3 K94-33961 Wiring Harness...

MJ (BLACK LINE) Manual - Page 2

...13 and 14 for emergency manual door operation. DISCONNECT : SAFETY Model MJ: Floor level disconnect for optional ...LIMIT ADJUST Linear driven, fully adjustable screw type cams. Adjustable to the bottom edge of door. A REVERSING EDGE IS STRONGLY RECOMMENDED FOR ALL COMMERCIAL OPERATOR INSTALLATIONS. Output: #48 chain OUTPUT SHAFT SPEED:.....80 RPM DOOR SPEED approx. 9" per sec. OPEN...

MJ (BLACK LINE) Manual - Page 3

... the hand chain to hang in the door opening, hook the chain off to the door shaft. c. The hand chain wheel can cause SERIOUS PERSONAL INJURY. • Disable ALL locks and remove ALL ropes connected to door BEFORE installing and operating door operator to move or adjust doors, door springs, cables, pulleys, brackets or their hardware, ALL of...

MJ (BLACK LINE) Manual - Page 5

... 8. Refer to Model MJ instructions above for your door. 2. Remove enough links...door from bag and place the end through the keyhole in the desired direction by slipping the end through both a floor level disconnect chain to Model MH instructions above for manual operation. 5 Manual Disconnect for Models MH and HMJ Keyhole Bracket Model HMJ This operator includes both openings...

MJ (BLACK LINE) Manual - Page 6

... used. This includes pneumatic and electric edges. If not pre-installed by either coiled cord or take-up the door opening . 4. Adjust open limit nut so that actuator is out of sight of both nuts. 2. WARNING To reduce the risk of SEVERE INJURY or DEATH, ALWAYS CAUTION install reversing sensors when the 3-button control station is engaged as...

MJ (BLACK LINE) Manual - Page 7

... individual. • DO NOT install ANY wiring or attempt to door and operator, make ALL door locks inoperative. Be sure that...Near & Opposite side) CONDUIT ACCESS 7 Secure locks(s) in "OPEN" position. Inside this manual. To change motor rotation, exchange...for all power and control wiring connections and have completed the limit switch adjustment procedure. Three (3) 7/8" & 1-1/6" DIA. ...

MJ (BLACK LINE) Manual - Page 9

... off clutch nut until there is just enough tension to permit the operator to move the door smoothly but to allow the clutch to activate a commercial door opener, a reversing edge MUST be connected in SERIOUS INJURY or DEATH to cross path of door if desired. 9 Cotterpin Washer Clutch Pulley Reinstall cotterpin. Failure to install a reversing edge...

MJ (BLACK LINE) Manual - Page 15

... HMJ5011R HMJ5011L HMJ5025R HMJ5025L VARIABLE COMPONENT KITS PART NUMBER K13-10024 K23-10041 K29-2 K21-10340 K21-5230 K29-10338 K29-12110 K24-24-6 DESCRIPTION Limit Nut, (set of your operator. Optional modifications and/or accessories included with your operator may add or remove certain components from K72-12487 and K75-12493...