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LiftMaster MJ Support Question

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Question posted by loftyacres on August 7th, 2012

Why Does My Door Drift Down After Opening

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Related LiftMaster MJ Manual Pages

MGJ User's Guide Manual - Page 2

... Duty existing 315 MHz product line as well as a Timer To Close (TTC) Commercial Door Operator. The operator will automatically convert to close limit. Reversing devices are recommended for Monitored...then reconnect power to the following descriptions of feature that reverses when closing by any opening device. • Wiring for safety device to the close command. NOTE: The ...
MGJ User's Guide Manual - Page 4

... LT C29 R24 P1 D9 LMEP1 LMEP2 COM INTRLK STOP CLOSE OPEN LEARN STOP CLOSE OPEN LEDD14 1 2 3 4 5 67 MEP1 LMEP2 COM INTRLK STOP CLOSE OPEN NOTICE: To comply with door in fully closed position. 2. The TTC will become active after the next open command. Press and release the LEARN button. 2. TTC will become enabled after...
MGJ User's Guide Manual - Page 5

... Handle MODEL MH These operators are equipped with Hoist for your model operator. AVERTISSEMENT TO DISCONNECT DOOR FROM OPENER TO RECONNECT DOOR ARM TO TROLLEY NOTICE Emergency Emergency Disconnect Door Arm ATTEEmergNencyTION Pull emergency Disconnect release handle straight down. Chain Retaining Bracket (with pad locking provisions) ADVERTENCIA PRECAUCIÓN Electrical...
MGJ User's Guide Manual - Page 7

... manual. • Be sure the owner or person(s) responsible for operation of the photo eyes or sensing edge. 3. Allow door to obstruction and reverse if sensing edge is installed. 4. Open the door. 2. AVERTISSEMENT If door did not reverse from electrocution, disconnect ALL electric power BEFORE performing ANY maintenance. In C2 wiring the remote control...
MGJ User's Guide Manual - Page 8

...ANY COMMANDS No power Accessory failure Possible component failure OPERATOR MAKES Operator requires adjustment NOISE BUT DOOR DOES NOT MOVE DOOR DRIFTS AFTER OPERATOR STOPS Operator or door requires 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...
MGJ User's Guide Manual - Page 12

... radio receiver range. R ING CPS-L Non-Monitored 65-8202 Commercial Protector SystePmRE®SS: TO OPEN Provides protection on doors up to 30' wide. CONTROL STATIONS 02-102 2-Button Control Station: Steel enclosure. OPEN OPEN ACCESSORIES REMOTE CONTROLS 315MHz 371LM OPEN 1-Button SECURITY✚® Remote Control: Includes visor clip. 373LM 3-Button SECURITY✚®...
MJ5011E QuickStart-2008 Manual - Page 1

... off clutch nut until there is just enough tension to permit the operator to move the door smoothly but to allow the clutch to Model MJ instructions above floor) Connect the power to open and close to the door as possible. 1b Bracket Shelf Mounting: The operator may be pushed up /pull-down manually...
MJ5011E QuickStart-2008 Manual - Page 2

... setting. All programmed remote controls will light). 3. QuickStart for the model MJ/MH/MHS door operator Medium Duty Logic This QuickStart is intended to activate this feature. NOTE...to Close (TTC) Timer to Close feature enables the operator to close the door after a preset time, adjustable from the open command. Programming Remote Controls 7 6 5 3 White/Black White LiftMaster® ...
MJ5011E Installation-2008 Manual - Page 5

... with : Master links (2), wall bracket (1), Fastener Bag (1) WARNING PREPARATION WARNING PREPCARAINUG TYOIUORNDOOR The manufacturer recommends 3' (91.4 cm) of clearance in the door opening, hook the chain off to the side near the top of the door jamb. The handing is out of which are under EXTREME tension and can not be sure the...
MJ5011E Installation-2008 Manual - Page 11

... DEATH, install reversing sensors when: • The radio is used. • The 3-button control station is out of sight of the door. • Or ANY other control (automatic or manual) is used . AVERTISSEMENOTperator Conduit ATTENTION ^OPEN CLOSE O STOP ^ ^ ^ Wire 3-button control station Power AUX AANUT X ANT AUX ANT ^^^^ TTC LEARN STOP CLOSE...
MJ5011E Installation-2008 Manual - Page 13

... moving limit nuts or adjusting clutch nut. 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 released, verify...
MJ5011E Installation-2008 Manual - Page 14

... Eye Sensing Edge 14 SENSING EDGES When properly connected, the sensing edge will make contact with an obstruction while the door is closing , the door will stop and typically reverse to the full open position. The sensing edge must be installed on the bottom of its invisible light beam. The photo eyes must...
MJ5011E Installation-2008 Manual - Page 16

... LEDD14 1 2 3 4 5 6 7 LMEP1 LMEP2 COM INTRLK STOP CLOSE OPEN 8 9 10 ITEM 1 2 3 4 5 6 7 8 9 10 DESCRIPTION Open Button Close Button Stop Button Learn Button Timer to Close Button Purple Wire Antenna Auxiliary Antenna Connection LED Field Wiring Terminal Factory Wiring Connector FUNCTION Open Door Close Door Stop Door Programs the remote controls and performs additional programming...
MJ5011E Installation-2008 Manual - Page 20

... INSTALLED) 1. Place an obstruction in the close .) 4. In C2 wiring the remote control will flash 7 times on power up. Press remote control button. 2. Press OPEN button. (The door should open . 3. Door should stop if in the open the door only. 1. Open the door. 2. Press CLOSE button. TEST REMOTE CONTROL * Requires B2 wiring type and compatible LiftMaster remote control...
MJ5011E Installation-2008 Manual - Page 21

...hoist chain. 3. The door may be locked in an open door falling rapidly and/or unexpectedly. • NEVER use emergency disconnect ONLY when door is disconnected by pulling ...sash chain) to operate the door again electrically. Refer to Model MJ instructions for hoist operation. 2. Electrical Interlock with pad locking provisions) ATTENTION MODEL MJ This operator has a floor level...
MJ5011E Installation-2008 Manual - Page 22

... 22 THE WRONG DIRECTION connection reversed DOOR DRIFTS AFTER OPERATOR STOPS A) Door not balanced properly ➤ Disconnect trolley assembly and check door for assistance. C) TTC not programmed... device. B) Clutch slipping ➤ Adjust clutch, see ADJUSTMENT section. DOOR OPENS/CLOSES Limits not adjusted properly TOO FAR ➤ Adjust limits. RADIO FUNCTIONALITY...
MJ5011E Installation-2008 Manual - Page 31

... mounting brPaREcSSket, Painted steel, for medium duty. OPEN CLOSE Antenna: External kit for TO MJ, MH, and MHS.RING 10-9095 ANTENNA EXT-ANT OPEN Medium Duty Angle Mounting Bracket: CLOSE Heavy-gauge steel bracket. ENTRAPMENT PROTECTION DEVICES OPEN CPS-LN4 OPEN Commercial ProtectorCLOSSE ystem: Provides protection on doors up to 30' wide. WPB1LM WPB3LM WKP5LM...
MJ (BLACK LINE) Manual - Page 2

...OPEN & STOP, constant pressure to CLOSE, open override plus wiring for emergency manual door operation. Secondary: #48 chain/sprocket. Output: #48 chain OUTPUT SHAFT SPEED:.....80 RPM DOOR SPEED approx. 9" per sec. REQUIRED WHEN THE 3 BUTTON CONTROL STATION IS OUT OF SIGHT OF DOOR... A - DISCONNECT : SAFETY Model MJ: Floor level disconnect for optional control settings and...
MJ (BLACK LINE) Manual - Page 3

...on the opposite side of door, and in the door opening, hook the chain off to the side near the top of balance. b. If you need to move or adjust doors, door springs, cables, pulleys, ... securely Hand Chain Handing For MH and HMJ models with Bearing (Not Provided) Door Sprocket 5-1/2" (13.97 cm) All MJ, MH, and HMJ series operators have dual output shafts and may be determined ...
MJ (BLACK LINE) Manual - Page 9

... or garage door: • ALWAYS keep gate or garage door in parallel with type C2 control wiring, a terminal • ALWAYS keep remote controls out of reach of the electrical enclosure. bracket marked R1 R2 R3 is located on the FIELD WIRING CONNECTIONS diagram. More than one device may be mounted to activate a commercial door opener, a reversing...

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