Craftsman 139.53403 - Manual (Page 21)

Having a Problem? (Continued)
SITUATION
DOOR WON’T CLOSE
PROBABLE CAUSE & SOLUTION
Th6 infrarsd Rsversing S6nsor(if you have installed this accessory) may
be misaligned or obstructed Disconnect sensor and check door opera­
lion. If problem disappears, correct alignment.
DOOR REVERSES FOR
NO APPARENT REASON
2
3
5.
Is something obstructing the door? Pull red emergency release handle.
Operate door manually. If it is unbalanced or binding, call a garage door
serviceman to correct the problem,
Clear any ice or snow from garage floor area where garage door closes.
Review the Force Adjustment Chart on Page 17. Repeat Safety Reverse
Test after adjustment is complete.
If door reverses in FULLY CLOSED position, decrease travel limits (See
Pg 17) and repeat Safety Reverse Test after adjustment is complete.
THE NEED FOR OCCASIONAL ADJUSTMENT OF FORCE AND LIMIT SET­
TINGS IS NORMAL WEATHER CONDITIONS IN PARTICULAR CAN AFFECT
DOOR TRAVEL
The infrared Reversing Sensor(if you have installed this accessory) may
be misaligned or obstructed. Disconnect sensor and check door opera­
tion. If problem disappears, correct alignment.
OPENER LIGHT
DOESN’T TURN ON ^
1, Replace the light bulb (75\A/atts Maximum) Use rough service bulbs if
standard bulbs burn out prematurely due to vibration (Vibration may be
caused by loose end panels. Retighten screws).
DOESN’T TURN OFF
1, There may be a defective ground at celling or wall receptacle. Unit must
be grounded.
OPENER STRAINS OR
MAXIMUM FORCE IS NEEDED
TO OPERATE DOOR
1. Door may be out of balance. Use emergency release rope and handle to
disconnect trolley Open and dose door manualiy. ^
A properly balanced doorwill remain in any point of travel while being sup­
ported entirely by its springs If it does not, cal! a garage door serviceman to
correct problem.
OPENER MOTOR HUMS
BRIEFLY, THEN WON’T RUN
1.
2.
OPENER WON’T OPERATE
DUE TO POWER FAILURE
Trolley may be jammed into rai I stop bolts. Pull or push on door while motor
is humming to release jammed condition. Re-adjust door limits (Page 17)
to prevent over-travel.
If problem occurs on the first operaiion during the installation process or
after the chain was removed and re-instailed, the motor may be out of
phase. Remove chain; cycle motor to down position (Observe the drive
sprocket When it turns in clockwise direction and stops, motor is in down
position), Re-instail chain.
Use emergency release rope and handle to disconnect troiley, Door can
be opened and closed manually. When the power is restored, press the
wall push button and trolley will automatically reconnect
The emergency release key lock accessory (for use on garages with no
service door) disconnects the trolley from outside the garage In case of
power failure.
CHAIN DROOPS OR SAGS
It is normal for the chain to droop slightly in closed door position. Use
emergency release rope and handle to disconnect troiley If chain returns
to normal height when trolley is disengaged and door reverses on a one-
inch obstruction, no adjustments are needed. See Page 9.
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