Lift-master MJ1211 User Manual

The Chamberlain Group, Inc. A DUCHOSSOIS ENTERPRISE 845 Larch Avenue Elmhurst, Illinois 60126

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NOT FOR RESIDENTIAL USE

Serial # Box (located on electrical box cover)

Installation Date

Wiring Type

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

TABLE OF CONTENTS

WARNING

CAUTION

WARNING

SPECIFICATIONS

Operator Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Operator Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

PREPARATION

Sectional and Rolling Type Doors . . . . . . . . . . . . . . . . . . . . . . .4-5

ADJUSTMENT

Limit Switch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Clutch Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Connect Reversing Edge Device (Optional) . . . . . . . . . . . . . . . . .7

POWER WIRING

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

INSTALL CONTROL STATION

. . . . . . . . . . . . . . . . . . . . . . .9

DIAGRAMS

Master Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Master Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

BRAKE INSTALLATION & ASSEMBLY PARTS

. . . .12-13

MAINTENANCE SCHEDULE

. . . . . . . . . . . . . . . . . . . . . . . .14

REPAIR PARTS

Illustrated Parts - Electrical Box. . . . . . . . . . . . . . . . . . . . . . . . . 15

Repair Parts - Models MT & MJ . . . . . . . . . . . . . . . . . . . . . . . . 16

Illustrated Parts - Model MJ 1211 . . . . . . . . . . . . . . . . . . . . . . . 17

Repair Parts - Model MJ 1211. . . . . . . . . . . . . . . . . . . . . . . . . . 18

Operator Notes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Control Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

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.

OPERATOR SPECIFICATIONS

MOTOR

TYPE: . . . . . . . . . . . . . . . . . . Permanent Split Capacitor

HORSEPOWER: . . . . . . . . . . . . . . . . . 1/2 HP Light Duty

(12 Cycles /Hr.)

SPEED: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000 RPM

VOLTAGE: . . . . . . . . . . . . . . 115VAC 60Hz Single Phase

CURRENT: . . . . . . . . . . . . . . . . . . . . . . . . . 6.0/6.5 AMP

MAXIMUM DOOR SIZE:. . . . . . . . . . . . . . . . . . 14’ X 14’

ELECTRICAL

TRANSFORMER: . . . . . . . . . . . . . . . . . . . . . . . . .24VAC

CAPACITOR: . . . . . . . . . . . . . . . . .Single 70 Microfared

CONTROL STATION: . . . .NEMA 1 three button station.

OPEN/CLOSE/STOP

WIRING TYPE: . . . . . . . . . . . . . . .C2 (Factory Shipped)

Momentary contact to OPEN & STOP, constant pressure to CLOSE, open override plus wiring for sensing device to reverse.

LIMIT ADJUST: . . . . . . . . . . . . . . . . .Linear driven, fully

adjustable screw type cams. Adjustable to 14’ feet.

MECHANICAL

DRIVE REDUCTION:1st Reduction: Heavy Duty (4L) V-Belt

2nd & 3rd Reduction: #41 Chain and Sprockets Output: #48 Chain

OUTPUT SHAFT SPEED: . . . . . . . . . . . . . . .38.6 R.P.M.

DOOR SPEED: . .Depends on combination of sprockets

between door and output shaft.

BRAKE: . . . . . . . . . . . .Solenoid Drum Brake (Optional)

BEARINGS: . . . . . . . . . . . .Heavy Duty Oil-Filled Bronze.

HOIST WHEEL: . . . . . . . . . . . . . . . . . . . . . . . .Standard

SAFETY

DISCONNECT: . . . . . .Emergency Floor-level Disconnect

CLUTCH: . . . . . . . . . . . . . . . . . .Adjustable Friction Type

SAFETY EDGE: . . . . . . .(Optional) Electric or pneumatic

sensing device attached to the bottom edge of door. A REVERSING EDGE IS STRONGLY RECOMMENDED FOR ALL

COMMERCIAL OPERATOR INSTALLATIONS. REQUIRED WHEN THE 3 BUTTON CONTROL STATION IS OUT OF SIGHT OF DOOR OR ANY OTHER CONTROL (AUTOMATIC OR MANUAL) IS USED. SEE PAGE 8.

OPERATOR DIMENSIONS

WEIGHTS AND PHYSICAL MOUNTING DIMENSIONS

HANGING WEIGHT: 48 LBS.

11-1/2"

16-7/16" without brake

16-15/16" with brake

17-1/2" without brake

18-9/16" with brake

Brake

PREPARATION

It is imperative that the wall or mounting surface provide adequate support for the operator.

This surface must:

a. Be rigid to prevent play between operator and door shaft. b. Provide a level base. c. Permit the operator to be fastened securely and with the

drive shaft parallel to the door shaft.

The safety and wear of the operator will be adversely affected if any of the above requirements are not met. For metal buildings, fasten 2" x 2" x 3/16" (or larger) angle iron frames to the building purlins. Retain 6" (15 cm) between frames (Figure 1).

NOTE: On concrete or block walls, install operator as shown in Figure 2.

For standard rolling steel doors, install operator as shown in Figure 3. (If mounting to a steel building, make an angle iron mounting frame as shown in Figure 1).

To prevent possible SERIOUS INJURY or DEATH:

• DO NOT connect electric power until instructed to do so.

• If the door lock needs to remain functional, install an

interlock switch.

• ALWAYS call a trained professional door serviceman if door

binds, sticks or is out of balance. An unbalanced door may not reverse when required.

• NEVER try to loosen, move or adjust doors, door springs,

cables, pulleys, brackets or their hardware, ALL of which are under EXTREME tension and can cause SERIOUS PERSONAL INJURY.

• Disable ALL locks and remove ALL ropes connected to door

BEFORE installing and operating door operator to avoid entanglement.

WARNING

Figure 1

Mount Door Sprocket to Door. Sprocket Provided with Door (Not with Operator). Refer to Door Owner's Manual for Installing Door Sprocket.

2" x 2" x 3/16" Angle Iron Brace

Installation of Operator to Sheet Type Rolling Doors or Rolling Doors without Live Draft Shaft

Front of Hood Mounting on Rolling Steel Doors. Mounting Bracket (Optional)

Mounting Bracket (Optional)

Direction of Output Shaft Rotation for OPEN

Door Sprocket

Figure 3

Figure 2

SECTIONAL AND ROLLING TYPE DOORS

1. Place door sprocket and shaft support bracket (sectional door only) on door shaft as shown. Attach shaft support bracket to angle brace. On concrete buildings, attach shaft support bracket to wall of building.

Shaft Support Bracket with Bearing (Not Provided)

Door Sprocket

6" (15 cm)

PREPARATION

SECTIONAL AND ROLLING TYPE DOORS (CONTINUED)

2. Place drive sprocket on appropriate side of operator. Do not insert key at this time.

3. Position roller chain over door sprocket and join ends together with master link.

4. Raise or lower operator until the chain is taut (not tight) as in Figure 4. Mark slotted holes to match operator frame.

If drive sprocket is ABOVE door sprocket, drill hole at the top of each slot.

If drive sprocket is BELOW door sprocket, drill hole at bottom of each slot.

Placement of the drilled holes will allow for chain adjustment if necessary.

5. Make sure operator output shaft is parallel to door shaft and sprockets are aligned. When in position, secure operator with 3/8" bolts or concrete anchors as required.

Figure 4

OPERATORS WITH CHAIN HOISTS

6. Place hand chain through eye bolt guides and around pocket wheel. Remove enough links so chain hangs approximately 4' above floor.

7. Uncoil disconnect cable and fasten chain keeper to the wall of building (Figure 6). Adjust disconnect cable handpull and fender washer so chain keeper holds cable in position when cable is pulled as far as its travel permits.

Figure 5

Figure 6

Installation of Operator to Sectional Door (Metal Building)

Operator Provided Door Sprocket

2" x 2" x 3/16" Angle Iron Brace

Installation of Operator to Standard Rolling Steel Doors.

Wire (24V)

Make-up Box (Not Provided)

Take-up Reel (Optional)

Coil Cord (Optional)

Air Hose

Reversing Edge

Pneumatic Air Switch: Not required or provided when electric reversing edge is used

REEL (OPTIONAL)

Take-up reel should be installed 12" above top of door

COIL-CORD (OPTIONAL)

Connect operator end of coil cord to junction box (not provided) fastened to the wall approximately halfway up the door opening (Figure 5). Electrician must hardwire junction box to the operator electric box in accordance with local codes.

Chain Keeper

Cable

Handle

LIMIT ADJUSTMENT

NOTE: Make sure the limit nuts are positioned between the limit switch actuators before proceeding with adjustments.

1. Depress open limit switch. The operator should stop.

2. To increase door travel, spin nut away from limit switch. To decrease door travel, spin limit nut toward limit switch.

3. Adjust open limit nut so that door will stop in open position with the bottom of the door even with top of door opening.

4. Repeat Steps 1 and 2 for close cycle. Adjust close limit switch so that the limit switch is engaged as door fully seats at the floor.

Press limit nut retainer down toward frame to disengage.

ADJUSTMENT

To avoid SERIOUS personal INJURY or DEATH from electrocution, disconnect electric power BEFORE manually moving limit nuts.

WARNING

CLUTCH ADJUSTMENT

Adjust clutch so that it is tight enough to open and close the door but will slip when the door meets an obstruction. Either loosen or tighten the clutch nut with 1/4 turn increments The clutch will require periodic inspection and adjustment.

CAUTION: The adjustable friction clutch is NOT an automatic reversing device. An electric or pneumatic reversing edge can be added to bottom edge of door if desired.

To prevent possible SERIOUS INJURY or DEATH, install reversing sensors when the 3-button control station is out of sight of the door or ANY other control (automatic or manual) is

used. Reversing devices are recommended for ALL installations.

WARNING

Close Limit Switch

Actuator

CLOSEOPEN

Close Limit Nut

Open Limit Switch

Actuator

Limit Nut Retainer

SLOSLC

ADLSSLS

Open Limit Nut

Clutch Pad

Clutch Plate

Cotter Pin

Adjusting Nut

Spring

Washer

Clutch Pulley

+ 14 hidden pages