Brake Adjustment; Brake Parts; Clutch Parts; Clutch Adjustment - Chamberlain T Owner's Manual

Industrial duty door operator

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Installation manual (108 pages)

User manual (29 pages)

Owner's manual (28 pages)

Table Of Contents

Table of Contents

A solenoid brake is standard on 3/4 and 1 horsepower models, and is optional on 1/3 and 1/2 horsepower models. The

brake is adjusted at the factory and should not need additional adjustment for the the life of the friction pad.

Replace friction pads when necessary. Refer to the

illustration for identification of components for the solenoid

type brake system.

CLUTCH ADJUSTMENT & AUXILIARY REVERSAL SYSTEM

1. Remove cotterpin from nut on the clutch shaft.

2. Back off clutch nut until there is very little tension on the

clutch spring.

3. Tighten clutch nut gradually until there is just enough

tension to permit the operator to move the door

smoothly but to allow the clutch to slip if the door is

obstructed. When the clutch is properly adjusted, it

should generally be possible to stop the door by hand

during travel.

4. Reinstall Cotterpin.

The Auxiliary Reversal System works in tandem with the

adjustable clutch to detect if a closing door meets an

obstruction. If an obstruction is met and causes the clutch

to slip, the Auxiliary Reversal System will return the door

to the full open position. The Auxiliary Reversal System is

designed to protect the door and motorized operator. It is

not intended as a replacement for a safety sensing device,

nor will it work for sectional doors when a jackshaft

operator is used.