Electrical Requirements; Complete Safety Reversing Sensor Installation - Craftsman 139.53993DM Owner's Manual

INSTALLATION STEP 8

Electrical Requirements

To avoid installation diffi culties, 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 fi t into a grounding type outlet. If the plug doesn't fi t into the
outlet you have, contact a qualifi ed electrician to install the proper
outlet.
RIGHT
If permanent wiring is required by your local code, refer to the
following 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 diffi culties, do not run the opener at this
time.
INSTALLATION STEP 9
Complete the Safety Reversing Sensor Installation
ALIGNING THE SAFETY REVERSING SENSORS
• Plug in the opener. The indicator lights in both the sending
and receiving eyes will 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 indicator light in the
receiving eye is off, dim, or fl ickering (and the invisible light beam
path is not obstructed), alignment is required:
• Loosen the sending eye wing 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 indicator light
glows steadily, tighten the wing nut.
WRONG
To prevent possible SERIOUS INJURY or DEATH from
electrocution or fi re:
• Be sure power is NOT connected 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.
• NEVER use an extension cord, 2-wire adapter, or change
plug in ANY way to make it fi t outlet. Be sure the opener is
grounded.
PERMANENT WIRING
CONNECTION
Ground Tab
Green
Ground Screw
Ground Wire
TROUBLESHOOTING THE SAFETY REVERSING SENSORS
1. If the sending eye indicator light does not glow steadily after
installation, check 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 eye indicator light glows steadily but the
receiving eye indicator light doesn't:
• Check alignment.
• Check for an open wire to the receiving eye.
3. If the receiving eye indicator light 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 fl ash 10 times
(see page 15).
21
Black
Wire
White Wire Black Wire