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LiftMaster MJ Support Question

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Question posted by Txcttldog on October 14th, 2013

The Motor Keeps Running And At The Top And Bottom.

Was workin fine until broom handle kept it from closing and was preventing from reversing.

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Related LiftMaster MJ Manual Pages

MGJ User's Guide Manual - Page 4

...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 TTC C2 RADIO OPERATION OPEN CLOSE STOP X X X X X (3 button X remote) X X REVERSE WHILE CLOSING X TTC RESET X X WHEN OPEN X 4 THERE ARE NO OTHER USER SERVICEABLE PARTS. Operation is running. Begin with FCC Standards FOR...

MGJ User's Guide Manual - Page 5

... MH 5 To operate the hoist: 1. Release handle. Pull the disconnect chain (sash chain) to disengage trolley ONLY when door is used. MODEL MT/BMT Emergency Disconnect CAUTION To prevent possible SERIOUS INJURY or DEATH from the chain retaining bracket before the door will disable the electrical controls when the hoist is CLOSED. Emergency disconnect will...

MGJ User's Guide Manual - Page 6

...down operation. Model MJ/MGJ for manual hoist operation. AVERTISSEMENT When operator is used, pull handle to the operator BEFORE manually operating your door. The door may now be ...ÓN 6 Keyhole Bracket CAUTION To prevent possible SERIOUS INJURY from a moving chain, DISCONNECT electric power to disengage operator from the door operator. 1. Or if emergency egress device...

MGJ User's Guide Manual - Page 8

... 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 Remote...

MGJ User's Guide Manual - Page 12

...;SS: TO OPEN Provides protection on doors up to 30' wide. All Rights Reserved PRESS 2-Strand 22 AWG Wire (500'): Color coded, white andOPwEN hite/black. CLOSE PRESS TO ...controls can be used with EXT-ANT for control wiring. 02-103 ^ ^ OPEONPEN CLOSE CLOSE O STOP 02-109 OPEN CLOSE 01-34215B 3-Button Control Station: Steel enclosure. 21-2LM Key Control Station: Indoor...

MJ5011E QuickStart-2008 Manual - Page 1

... the chain is used , pull handle to locate a professional installing dealer ...open and close to the door as close door properly. Be sure door sprocket is properly aligned with adjustments. 7 Align Sprockets Optimum Distance 12-15" MODEL MJ...door. Follow ALL local electrical codes. 10 Run control wires through the keyhole of the operator. When operator is very little tension on the door...

MJ5011E QuickStart-2008 Manual - Page 2

...MJ/MH/MHS door operator Medium Duty Logic This QuickStart is intended to program additional buttons. A SAFETY DEVICE IS HIGHLY RECOMMENDED Push Direction Limit Nut Will Move During Travel SAFETY CLOSE Limit Nuts Retaining Plate 11 Limit Switches OPEN... the button on the logic board (OPEN, CLOSE or STOP). Because each application is unique, it is running. 1 2 3 4 5 Electrical ...

MJ5011E Installation-2008 Manual - Page 4

... RPM: MJ 80 RPM...dry location OPERATING TEMPERATURE 4˚ F to +122˚ F (-20C˚ to 14' door Max DUTY 12 Cycles per Hour Max 50 Cycles per Day Max DRIVE TRAIN Maintenance Free Bearings...Hand Chain Wheel present with model MH only. 7.070" " (17.78 cm) OPERATOR SPECIFICATIONS MOTOR TYPE Limited duty HORSEPOWER 1/2 HP VOLTAGE 115Vac, Single Phase, 60Hz FULL LOAD AMPS 6.0 Amps ...

MJ5011E Installation-2008 Manual - Page 5

... unbalanced door may not reverse when required. • NEVER try to remain functional, install an interlock switch. • ALWAYS call a trained professional door serviceman if door binds, sticks or is indicated by last letter of the model name (R or L). (Illustration shows right handed operator. If your installation check that all components were provided. 3 ^OPEN ^CLOSE O STOP...

MJ5011E Installation-2008 Manual - Page 9

... SYSTEMS The MHS operator includes both a floor level disconnect chain to disconnect the door from the door operator and a disconnect chain with pad locking provisions) B Wrap hand chain around... hand chain wheel and through chain guide (MH AND MHS ONLY) 4' above floor A Secure keyhole bracket to wall (MJ...

MJ5011E Installation-2008 Manual - Page 21

... result in an open door falling rapidly and/or unexpectedly. • NEVER use emergency disconnect ONLY when door is CLOSED. To disengage, pull the chain and secure in position by slipping the end through the keyhole of the continuous loop hoist chain. 3. Or if emergency egress device is used , pull handle to disengage operator from...

MJ5011E Installation-2008 Manual - Page 22

... pads are aligned or safety edge is internal within motor. E) Motor overload tripped ➤ Overload is not activated. C) TTC not programmed properly ➤ Reprogram TTC. A) Low battery ➤ Replace battery. B) TTC temporarily disabled ➤ Close and Open the door. DOOR REVERSES UNEXPECTEDLY Intermittent Safety Device activation ➤ Check all...

MJ5011E Installation-2008 Manual - Page 23

... Incorrect motor direction Maximum run timer has timed out (Maximum run time = 90 seconds) Logic Board Failure FIX none none Check for stuck close button or shorted close wire Check for assistance. Interlock Brown** 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...

MJ5011E Installation-2008 Manual - Page 31

... to 45' wide. For use with EXT-ANT 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 123 456 789 * 0# Wireless...

MJ (BLACK LINE) Manual - Page 2

... 1 Phase 60Hz, 230V 1 Phase 50Hz CURRENT See motor nameplate ELECTRICAL TRANSFORMER 24Vac CONTROL STATION: ......NEMA 1 3-button station. OPEN/CLOSE/STOP WIRING TYPE C2 (Standard) Momentary contact to OPEN & STOP, constant pressure to reverse. Output: #48 chain OUTPUT SHAFT SPEED:.....80 RPM DOOR SPEED approx. 9" per sec. A REVERSING EDGE IS STRONGLY RECOMMENDED FOR ALL COMMERCIAL...

MJ (BLACK LINE) Manual - Page 3

...right (standard) or left side of door, and in the door opening, hook the chain off to the building purlins. NING IMPORTANWT ASARFNEITNYGNOTES ION WARNING To prevent possible SERIOUS INJURY or DEATH: •... Bracket 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 not reverse when required. • NEVER try...

MJ (BLACK LINE) Manual - Page 5

... to disconnect the door from the door operator. 1. Refer to the appropriate instructions below for hoist operation. 2. Refer to Model MJ instructions above the floor 8. Refer to disengage operator from bag and place the end through the keyhole bracket mounted on the wall. Or if emergency egress device is used , pull handle to Model...

MJ (BLACK LINE) Manual - Page 6

... so that actuator is out of sight of door or ANY other problems persist, call our toll-free number for assistance - 1-800-528-2806. WARNING To avoid SERIOUS PERSONAL INJURY or DEATH from actuator. Adjust close cycle. OPEN Limit Switch Retaining Plate CLOSE Limit Switch Aux. Reversing devices are compatible with your operator. WIRING: For...

MJ (BLACK LINE) Manual - Page 7

...ALL power and control wiring must be run the operator without consulting the wiring ...We recommend that you install an optional reversing edge BEFORE proceeding with local electrical codes.... 3. If the door lock needs to door and operator, make ALL door locks inoperative. Important...motor to the chassis ground screw in the wrong direction (open when CLOSE button is pressed and vice-versa).

MJ (BLACK LINE) Manual - Page 9

... sight of children. An electric or pneumatic reversing edge can be installed on the clutch shaft. 2. CAUTIWONARNING gate or garage door: • ALWAYS keep gate or garage door in the electrical enclosure as shown on the FIELD WIRING CONNECTIONS diagram. External Interlock Switch The operator has a terminal connection for OPEN/CLOSE/STOP) is located on the clutch spring...