LiftMaster MGJ MGJ Manual - Page 2

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TABLE OF CONTENTS CARTON INVENTORY Carton Inventory 3 Operator Dimensions 3 Operator Specifications 4 PREPARATION MGJ Opposite Handing Preparation 5 MGH Left Hand Mounting Preparations 6 I N S TA L L AT I O N Mount the Operator 7 Manual Operation 8 Entrapment Protection Accessories (Optional 8 ADJUSTMENT Limit Switch Adjustment 9 POWER WIRING & GROUND WIRING Power Wiring Connections 10 Ground Wiring Connections 10 CONTROL WIRING & INSTALLATION Determine Wiring Type 11 Model MGJ 11 Special Control Wiring 11 Mounting Instructions 11 DIAGRAMS Single Phase Schematic Diagram for MGJ/MGH 12 Three Phase Schematic Diagram for MGJ Only 13 MAINTENANCE Maintenance Schedule 14 How to Order Repair Parts 14 REPAIR PARTS MGH Illustrated Parts 16 Replacement Part Kits MGH 17 MGJ/MGH Electrical Box - Illustrated Parts 18 Electrical Box - Models MGJ & MGH 19 Illustrated Parts - Model MGJ 20 Replacement Part Kits MGJ 21 Operator Notes 22-23 Control Connection Diagram 24 WARNING Mechanical CWWAAAURRTNINOIINNNGG Electrical CAWUTAIRONNING When you see these Safety Symbols and Signal Words on the following pages, they will alert you to the possibility of serious injury or death if you do not comply with the warnings that accompany them. The hazard may come from something mechanical or from electric shock. Read the warnings carefully. When you see this Signal Word on the following pages, it will alert you to the possibility of damage to your door and/or the AVERTISSEMENT door operator if you do not comply with the cautionary statements that accompany it. Read them carefully. WARNING WARNING IMPORTANT NOTES: WARNING • BEFORE attempting to install, operate or maintain the operator, you must read and fully understand this manual and follow all WARNING safety instructions. • DO NOT attempt repair or service of your commercial door and gate operator unless you are an Authorized Service Technician. AVERTISSEMENT AAVVAEETRRTTETINSISSTSIEOEMMNEENNTT AATVTEERNTTISIOSNEMENT AVAEVRETRISTISSESMEEMNETNT AVERTISSEMENT 2

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TABLE OF CONTENTS
CARTON INVENTORY
Carton Inventory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operator Dimensions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operator Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
PREPARATION
MGJ Opposite Handing Preparation . . . . . . . . . . . . . . . . . . . . . . 5
MGH Left Hand Mounting Preparations . . . . . . . . . . . . . . . . . . . 6
INSTALLATION
Mount the Operator
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Manual Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Entrapment Protection Accessories (Optional) . . . . . . . . . . . . . . 8
ADJUSTMENT
Limit Switch Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
POWER WIRING & GROUND WIRING
Power Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Ground Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CONTROL WIRING & INSTALLATION
Determine Wiring Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Model MGJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Special Control Wiring
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mounting Instructions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DIAGRAMS
Single Phase Schematic Diagram for MGJ/MGH
. . . . . . . . . . . 12
Three Phase Schematic Diagram for MGJ Only . . . . . . . . . . . . 13
MAINTENANCE
Maintenance Schedule
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
How to Order Repair Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
REPAIR PARTS
MGH Illustrated Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Replacement Part Kits MGH . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
MGJ/MGH Electrical Box - Illustrated Parts
. . . . . . . . . . . . . . . 18
Electrical Box - Models MGJ & MGH . . . . . . . . . . . . . . . . . . . . 19
Illustrated Parts - Model MGJ. . . . . . . . . . . . . . . . . . . . . . . . . . 20
Replacement Part Kits MGJ
. . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Operator Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-23
Control Connection Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . 24
When you see these Safety Symbols and Signal Words on the
following pages, they will alert you to the possibility of
serious
injury
or
death
if you do not comply with the warnings that
accompany them. The hazard may come from something
mechanical or from electric shock. Read the warnings carefully.
When you see this Signal Word on the following pages, it will
alert you to the possibility of damage to your door and/or the
door operator if you do not comply with the cautionary
statements that accompany it. Read them carefully.
Mechanical
Electrical
WARNING
WARNING
WARNING
WARNING
CAUTION
CAUTION
IMPORTANT NOTES:
•
BEFORE attempting to install, operate or maintain the operator,
you must read and fully understand this manual and follow all
safety instructions.
•
DO NOT attempt repair or service of your commercial door and
gate operator unless you are an Authorized Service Technician.
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