Having A Problem - Craftsman 139.53315SR Owner's Manual

Having a Problem? (continued)
SITUATION PROBABLE CAUSE & SOLUTION
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DOOR REVERSES FOR
NO APPARENT REASON
1 Is something obstructing the door? Pull red emergency reteas handle Operate
door manuafly If it is unbalanced or binding, call a garage door serviceman _o
correct the problem.
2. Clear any ice or snow from garage floor area where garage door doses
3. Review the Force Adjustment Chart on page 1"7
REPEAT SAFETY REVERSE TEST after adjustment is complete,
4. If door reverses in FULLY CLOSED position, decrease trave{ limits (see page 17)
REPEAT SAFETY REVERSE TEST after the adjustment is complete.
THE NEED FOR OCCASIONAL ADJUSTMENT OF THE FORCE AND LtMIT
SETTINGS IS NORMAL. WEATHER CONDITIONS IN PARTICULAR CAN
AFFECT DOOR TRAVEL
The infrared Reversing Sensor (If you have installed this accessory) may be
misatigned or obstructed. Disconnect sensor and check door operation If problem
disappears, correct alignment
OPENER LIGHT DOESN'T TURN ON
1. Replace the !ight bulb (75 watts maximum) Use a "garage door opener bulb" if
standard bulb burns out prematurely due to vibration Vibration may be caused
by loose end panel Retighten screws.
DOESN'T TURN OFF
1_ There may be a defective ground at ceiJing or wall receptacle
UNIT MUST BE GROUNDED.
OPENER STRAINS OR 1. Door may be out of balance or springs are broken. Close doorand use emergency
MAXIMUM FORCE IS NEEDED release rope and handle to disconnect trolley. Open and close door manually A
TO OPERATE DOOR properly balanced door will stay in any poin{ of travel while being supported entirely
by its springs. If it does not, call a garage door serviceman to correct the problem,
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OPENER MOTOR HUMS 1. Garage door springs are broken. SEE ABOVE
BRIEFLY, THEN WON'T WORK 2. The trolley may be jammed into stop bolts. Putl or push on door while motor is
humming to release jammed condition Re-adjust door limits (page 17) to prevent
over-travel.
REPEAT SAFETY REVERSE TEST after adjustment is complete.
3 If the problem occurs on first operation of the opener, door is locked DISABLE
DOOR LOCK If chain was removed and reinstalled, motor may be out of phase
Remove chain; cycle motor to the down position (Observe drive sprocket When
it turns in clockwise direction and stops in down position.) Reinstall chain,
REPEAT SAFETY REVERSE TEST after adjustment is complete.
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OPENER WON'T OPERATE
DUE TO POWER FAILURE
1. Use emergency release rope and handle to disconnect trolley Door can be opened
and closed manually, When the power is restored, press the wail push button and
trolley will automatically reconnect. Refer to Page 3 for Lockout Feature
2. The emergency release Key Lock accessory (for use on garages with no service
_oor) disconnects the trolley from outside the garage in case of power failure.
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CHAIN DROOPS OR SAGS
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OPENER NOISE IS DISTURBING
IN LIVING QUARTERS OF HOME
I it is normal for chain to droop slightly in the closed door position Use emergency
release rope and handle to disconnect trolley If chain returns to normal height
when the trolley is disengaged and door reverses on a one-inch obstruction, no
adjustments are needed (see page 9)
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1. If operational noise is a problem because of proximity of the opener to the tiving
quarters, Vibration Isolator Kit 41A3263 can be ordered from any Sears Service
Center and most Sears stores This kit was designed to eliminate the 'sounding
board effect' and is easy to install.
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