Liftmaster 480LM Handleiding

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To avoid possible SERIOUS INJURY to fingers from moving

garage door opener:

•Be sure power is not connected to the garage door opener

BEFORE installing the 480LM mounting kit.

•ALWAYS keep hand clear of chain and sprocket while

operating opener.

•Securely attach chain cover BEFORE operating.

Figure 2Figure 1

Models 480LM & 480LMC

Alternate Mounting Kit

1

2

3

4

5

INSTALLATION

1. Disassemble kit and remove foam pad (attached to

sprocket hub). Discard foam pad.

2. Attach the T-bracket to the motor unit using the

self-threading screws (Figure 1).

NOTE: The T-bracket will be above the existing mounting

bracket.

3. Attach sprocket with larger bore (1-1/4") to the motor

shaft of the opener. Position the sprocket so that the

screws are facing up and are accessible when

attached to the torsion bar (Figure 2).

4. Tighten both sides of the sprocket screws equally to

secure the sprocket to the motor unit (12-14 ft./lbs.

of torque). Securely tighten set screw.

CARTON INVENTORY

1T-bracket

21-1/4" Sprocket with Collar and Screws

31" Sprocket with Collar and Screws

4Chain

5Cover Assembly

NOT SHOWN

Hardware: 1/2" Screw (1),

#10 Self-Threading Screw (2),

and 1-1/2" Hex Head Screw (2)

Instructions 5

(provided with opener)

Product specificaties