Electrical Requirements; Complete Safety Reversing Sensor Installation - Craftsman 139.53902D Owner's Manual

iNSTALLATiON STEP 8
Electrical Requirements
To avoid installation difficulties, do not run the opener until
Step 9 below.
To reduce the risk of electric shock, your garage door opener has
a grounding type plug with a third grounding pin. This plug will
only fit into a grounding type outlet. If the plug doesn't fit into the
outlet you have, contact a qualified electrician to install the proper
outlet.
To prevent possible SERIOUSINJURYor DEATHfrom
electrocution or fire:
• Be sure power is NOTconnected to the opener, and
disconnect power to circuit BEFORE removing cover to
establish permanent wiring connection.
• Garage door installation and wiring MUST be in compliance
with ALL local electrical and building codes.
• NEVERuse an extension cord, 2-wire adapter, or change
plug in ANY way to make it fit outlet. Be sure the opener is
grounded.
PERMANENT WIRING
CONNECTION
if permanent wiring is required by your JocaJcode, refer to the
foJJowing procedure.
To make a permanent connection through the 7/8" hole in the top
of the motor unit:
• Remove the motor unit cover screws and set the cover aside.
• Remove the attached 3-prong cord.
• Connect the black (line) wire to the screw on the brass
terminal; the white (neutral) wire to the screw on the silver
terminal; and the ground wire to the green ground screw.
The opener must be grounded.
= Reinstall the cover.
To avoid installation difficulties, do not run the opener at this
time.
Ground Tab
Green
Ground Screw
Black
Ground Wire Wire
White Wire Black Wire
iNSTALLATiON STEP 9
Complete the Safety Reversing Sensor Installation
ALiGNiNG THE SAFETYREVERSING SENSORS
• Plug in the opener. The indicatorlightsin both the sending and
receiving eyeswill glow steadily if wiring connections and
alignment are correct.
The sending eye amber indicator light will glow regardless of
alignment or obstruction. If the green indicatorlight in the
receiving eye is off, dim, or flickering (and the invisible light beam
path is not obstructed), alignment is required:
• Loosen the sending eyewing nut and readjust, aiming directly
at the receiving eye. Lock in place.
• Loosen the receiving eye wing nut and adjust the sensor until it
receives the sender's beam. When the green indicatorlight
glows steadily, tighten the wing nut.
TROUBLESHOOTING T HE SAFETYREVERSING SENSORS
1. If the sending eyeindicator light does not glow steadily after
installation, c heck for:
• Electric power to the opener.
• A short in the white or white/black wires. These can occur at
staples, or at opener connections.
= incorrect wiring between sensors and opener.
= A broken wire.
2. If the sending eyeindicator light glows steadily but the
receiving eye indicatorlightdoesn't:
= Check alignment.
= Checkfor an open wire to the receiving eye.
3. if the receiving eye indicatorlight is dim, realign either sensor.
NOTE: When the invisible beam path is obstructed or misaligned
while the door is closing, the door will reverse. If the door is
already open, it will not close. The opener lights will flash 10
times (see page 15).
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