Quikserv SST-4035E, Service Manual

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Trouble Probable Cause Probable Solution
1. Motor shaft pulley or block pulley is loose
Tighten pulley or replace (Fig. 4-D (bottom of
motor) & K)
2. Broken drive belt Replace the defective part (Fig. 4-H)
Motor runs, but
the door does
not operate
3.Door bracket disconnected from the drive belt
Connect the door bracket to the drive belt (Fig. 4-
G)
Trouble Probable Cause Probable Solution
1. No power to the unit Check the circuit breaker
2. Power Switch is off or defective Turn on switch or replace (Fig. 4-A)
3. Fuse in switch or PC Board Blown Check and replace (Fig. 4-C or 5-B)
4. Component Rack no plugged in Check and plug in (Fig. 4-B)
5. Open Limit Switch defective or disconnected Replace or reconnect (Fig. 4-E & J)
6. Defective Eye Set Replace defective part (Fig. 9-A) (Pg. 11)
7. Obstruction in the door movement Check locks, slide rail, and remove obstructions
8. Defective motor or capacitor Replace defective part (Fig. 4-D & I)
9. Thermal overload tripped in motor
Caused by obstruction or strain to the motor -
check for obstruction or adjust the limit switch (Fig.
4-E & J)
10. Defective PC Board
Replace (Fig. 4 -F)
Trouble Probable Cause Probable Solution
1. Close limits switch is defective or disconnected Replace or reconnect (Fig. 4-e)
2. Eye assembly is unplugged or disconnected Check connection points and connect (Fig. 6-C)
Remove Obstructions
4. Faulty wire connection Check all connections - repair or replace
5. Defective PC Board Replace (Fig. 4-f)
6. Handicap button pushed in or the switch is defective
Trouble Probable Cause Probable Solution
1. Motor shaft pulley or block pulley is loose Tighten pulley or replace
2. Broken drive belt Replace the defective part
Trouble Probable Cause Probable Solution
1. Thermal overload in the motor has been tripped
Trouble Probable Cause Probable Solution
Clean and oil or tighten (Fig. 4-L)
2. Door bracket loose Tighten screws (Fig. 4-M)
Limit switch or switches may not be set properly
(Fig. 3) & (Fig. 4-E & J) - clear obstructions that
may inhibit the door movement - if power is on;
ensure that the door or doors are unlocked.
Motor will run for
a short period
then stops:
Doors are
dragging or
binding
1. Slide rail has dirt or debris build-up or the rail is
loose
Motor runs, but
the door does
not operate
3.Door bracket disconnected from the drive belt
Connect the door bracket to the drive belt (Fig. 4-
G)
Window Does
Not Operate
Door or doors
stay in the open
position
3. Photo-eye is obstructed by a person or some
other object
Push switch to the off position or replace (Fig. 6-
A). Not Applicable on serial no.'s above 35,700
Left Hand Unit Shown
Figure 4
Figure 5
Service Manual
SST-4035E
5
Quikserv Corp.
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