Chamberlain MGJ Owner's Manual
  1. Manuals
  2. Brands
  3. Chamberlain Manuals
  4. Garage Door Opener
  5. MGJ
  6. Owner's manual
Chamberlain MGJ Owner's Manual

Chamberlain MGJ Owner's Manual

Medium duty door operator
Hide thumbs Also See for MGJ:
Table of Contents

Advertisement

Quick Links

Download this manual See also: User Manual
O W N E R ' S M A N U A L
MO DE LS MG H & MGJ
MEDIUM DUTY DOOR OPERATOR
2 Y E A R W A R R A N T Y
Serial #
(located on electrical box cover)
NOT FOR RESIDENTIAL USE
Installation Date
41B6
Wiring Type
www.liftmaster.com

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MGJ and is the answer not in the manual?

Questions and answers

Related Manuals for Chamberlain MGJ

Summary of Contents for Chamberlain MGJ

  • Page 1 O W N E R ’ S M A N U A L MO DE LS MG H & MGJ MEDIUM DUTY DOOR OPERATOR 2 Y E A R W A R R A N T Y Serial # (located on electrical box cover)

  • Page 2: Table Of Contents

    Model MGJ ........

  • Page 3: Carton Inventory

    HOIST HAND CHAIN (MGH Model only) DOOR SPROCKET DOOR/OPERATOR DRIVE CHAIN O P E R A T O R D I M E N S I O N S WEIGHTS AND DIMENSIONS - MGJ HANGING WEIGHT: 50-60 LBS. Mounting Dimensions 7.50"...

  • Page 4: Operator Specifications

    WIRING TYPE: ... MGH/MGJ: C2 (factory default), B2 VOLTAGE: ....MGJ: 120V, 60Hz, 1Ph optional...

  • Page 5: Preparation

    • DO NOT connect electric power until instructed to do so. • If the door lock needs to remain functional, install an MGJ OPPOSITE HANDING PREPARATIONS interlock switch. • ALWAYS call a trained professional door serviceman if door REMOVE DISCONNECT ASSEMBLY COMPONENTS binds, sticks or is out of balance.

  • Page 6: Mgh Left Hand Mounting Preparations

    P R E P A R A T I O N MGH LEFT HAND MOUNTING PREPARATIONS The operator may be mounted on either the right (standard) or left side of door, and in either a vertical (standard) or horizontal mounting position. Refer to the steps below if you require the hand chain and/or disconnect chain to be on the opposite side of the operator;...

  • Page 7: Installation

    I N S T A L L A T I O N IMPORTANT NOTE: Before your operator is installed, be sure the FIGURE 1 door has been properly aligned and is working smoothly. The operator may be wall mounted or mounted on a bracket or shelf. If necessary, refer to the preparation on page 5.

  • Page 8: Manual Operation

    To prevent possible SERIOUS INJURY from a moving chain, power failure. CAUTION DISCONNECT electric power to the operator BEFORE manually MODEL MGJ operating your door. 1. To disengage, pull the sash chain and secure in the disengaged position by slipping the end through the keyhole bracket mounted on the wall.

  • Page 9: Adjustment

    A D J U S T M E N T WARNING WARNING LIMIT SWITCH ADJUSTMENT CAUTION WARNING WARNING NOTE: Make sure the limit nuts are positioned between the limit switches before proceeding with adjustments. To avoid SERIOUS PERSONAL INJURY or DEATH from 1.

  • Page 10: Power Wiring & Ground Wiring

    WARNING P O W E R W I R I N G & G R O U N D W I R I N G WARNING WARNING To reduce the risk of SEVERE INJURY or DEATH: • ALL electrical connections MUST be made by a qualified individual.

  • Page 11: Control Wiring & Installation

    WARNING C O N T R O L W I R I N G & I N S T A L L A T I O N WARNING WARNING To reduce the risk of SEVERE INJURY or DEATH: • ALL electrical connections MUST be made by a qualified individual.

  • Page 12: Single Phase Schematic Diagram For Mgj/Mgh

    S I N G L E P H A S E S C H E M A T I C D I A G R A M F O R M G J / M G H CLOSE-B N.O. MOTOR * RES.

  • Page 13: Three Phase Schematic Diagram For Mgj Only

    T H R E E P H A S E S C H E M A T I C D I A G R A M F O R M G J O N L Y BL/BK BL/BK BL/BK BL/BK 230 VOLT - 3 PHASE 460 VOLT - 3 PHASE MOTOR CONNECTION...

  • Page 14: Maintenance

    Call our TOLL FREE number: performing ANY maintenance. 1-800-528-2806 Use SAE 30 Oil (Never use grease or silicone spray). www.liftmaster.com Repeat ALL procedures. Do not lubricate motor. Motor bearings are rated for continuous operation. Inspect and service whenever a malfunction is AVERTISSEMENT observed or suspected.
  • Page 15 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 16: Mgh Illustrated Parts

    M G H I L L U S T R A T E D P A R T S K1 (K75-12783) K2 (K72-12789) K3 (K75-12829)

  • Page 17: Replacement Part Kits Mgh

    R E P L A C E M E N T P A R T K I T S M G H Refer to the parts lists below for replacement kits available for your operator. If optional modifications and/or accessories are included with your operator, certain components may be added or removed from these lists.

  • Page 18: Mgj/Mgh Electrical Box - Illustrated Parts

    M G J / M G H E L E C T R I C A L B O X - I L L U S T R A T E D P A R T S K1 (K75-12567)

  • Page 19: Electrical Box - Models Mgj & Mgh

    E L E C T R I C A L B O X - M O D E L S M G J & M G H For replacement of electrical box, motor or brake components be sure to match model number of your unit to kit number below to ensure proper voltage requirements.

  • Page 20: Illustrated Parts - Model Mgj

    I L L U S T R A T E D P A R T S - M O D E L M G J...

  • Page 21: Replacement Part Kits Mgj

    R E P L A C E M E N T P A R T K I T S M G J Below are replacement kits available for your operator. For replacement of electrical box, motor or brake components be sure to match model number of your unit to kit number below to ensure proper voltage requirements.

  • Page 22: Operator Notes

    O P E R A T O R N O T E S...

  • Page 23: Operator Notes

    O P E R A T O R N O T E S...

  • Page 24: Control Connection Diagram

    C O N T R O L C O N N E C T I O N D I A G R A M IMPORTANT NOTES: ATTENTION ELECTRICIAN: 1. The 3-Button Control Station provided must be connected for operation. USE 16 GAUGE OR HEAVIER WIRE 2.

This manual is also suitable for:

Mgh

Table of Contents