TROUBLE SHOOTING GUIDE
PARTS
LIST
.
.
This
trouble shooting
guide is for you to compare the problem with the possible cause.
l.
102152
-
l
Cover Assembly
SYMPTOM
POSSIBLE
CAUSE
Light cycles on and off every 3-4
Short in wall pushbutton or push-
seconds.
button circuit.
2.
102147-
l
Motor Support
3.
102142-l
Motor
4.
102137-
·l
Motor Mounting Angle
()
5.
102105-
l
Motor Bracket
6.
102101-l
Safety Trigger
7.
104047-l
Circuit
Board
Mounting
Door starts down, runs
l
second
*
Open safety switch or safety
and reverses.
switch circuit.
Bracket
8.
104036-
l
Circuit Board Mounting
Bracket
9.
104103-2
Circuit Board
Door starts up, runs
l
second and
*
Open safety switch or safety
10.
77543
Lim it Switch
stops.
switch circuit.
l
l.
77156
-l
Capacitor
12
.
77452
Capacitor Clip
Door
runs down, hits floor and re
-
Improper adjustment of down
limit
verses within l/2 second.
switch dog.
13.
102149-
l
Limit Switch Arm
14.
102156-l
Tension Spring
15.
104089-l
Lim it Switch Bracket
Door
limit
switch dog slipping.
*
Defective
limit
switch.
Assembll
16.
604058-l
Termina Strip
17.
104040-l
Sensitivity Switch
*
Defective circuit board.
18.
80628
-l
Adapter
19.
76877-12
Strain Relief Bushing
Door
starts down, runs
longer
than
Obstruction in doorway or roller
l second, then reverses.
pathway.
20.
77085
Power Cord
21.
102145-l
Main Frame
22.
104050-l
Eyelet
*
Hard operating or defective door.
Sensitivity control set too
light.
23.
102102-l
Safety Trigger Retainer
24.
102087-l
Sensitivity Spring
25.
104086-l
Main Drive Gear
Assembly
Door raises, carriage hits
power-
Improper adjustment of up
limit
head.
switch dog.
26.
102103
-
l
Chain Idler
27.
102106-l
Support Bracket
28.
102104-l
Motor Guard
Up
limit
switch dog slipping.
29.
102151
-
l
Boom Bracket (3 piece)
*
Limit switch defective.
102151-2
Boom
Bracket
(l piece)
30.
604067-l
Lampholder
*
Defective circuit board.
31.
86168
-3
Nylon Snap Bushing
32.
102144-l
Cable Dog
Door starts up, runs longer
than
l
Obstruction in doorway or roller
second, then stops.
pathway.
33.
104059-
l
Light Lens
34.
104039-l
Lampholder Bracket
35.
80813
-
l
Wire, Bel
I
Cord
*
Hard operating or defective door.
36.
86147
Push Button
Improper adjustment of sensitivity
control.
PARTS
AND
SERVICE
Door runs up, won't run down.
*
Down limit
switch
or down limit
switch
circuitry
open
.
For parts and service, contact the
*
Defective
circuit
board.
nearest Overhead Door Distributor.
Door runs down, won't run up.
*
Up
limit
switch
or up limit switch
When ordering parts, specify:
circuitry open.
*
Defective circuit board.
MODEL NUMBER
Door runs down, hits obstruction,
*
Defective safety switch,
safety
does not reverse immediately,
switch circuit, or safety
switch
PART NUMBER
but reverses in 30
seconds.
mechanism
.
PART
DESCRIPTION
Door will not open from
radio
or
Operator unplugged
.
pushbutton.
*
Defective radio
receiver.
Repairs to transmitter and receiver
should
be performed by a qualified
*
Defective circuit board.
repairman. See
Radio
Control
Instructions.
Motor overheated.
Motor runs, door wi 11 not open.
*
Broken chain, chain
-
cable, drive
sprocket, or drive gear
.
*
Requires the assistance of a qual ified
re
pairman
.
Page 22
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