Mounting And Wiring The Safety Reversing Sensors; Aligning The Safety Reversing Sensors; Troubleshooting The Safety Reversing Sensors - Merik 411M Manual Del Proprietário

Mounting and Wiring the Safety
Reversing Sensors
• Slide a 1/4"-20x1/2" carriage bolt head into the slot
on each sensor. Use wing nuts to fasten sensors
to brackets, with lenses pointing toward each other
across the door. Be sure the lens is not obstructed
by a bracket extension (Figure 5).
• Finger tighten the wing nuts.
• Run the wires from both sensors to the opener.
Use insulated staples to secure wire to wall and
ceiling.
• Strip 1/4" (6 mm) of insulation from each set of
wires. Separate white and white/black wires
sufficiently to connect to the opener terminal
screws: white to 2 and white/black to 3 (Figure 6).

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
flickering (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
sensor until it receives the sender's beam. When
the green indicator light glows steadily, tighten the
wing nut.
Figure 6
Bell Wire
Safety Reversing Sensor
Finished Ceiling
Safety Reversing Sensor
Invisible Light Beam
Protection Area
Figure 5
Carriage Bolt
1/4"-20x1/2"

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 terminal 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 blink 10 times. (If bulbs are not
installed, 10 clicks can be heard.) See page 20.
Connect Wire to
Opener Terminal Screws
Bell Wire
Door Control
Connections
(dotted line)
24
Wing Nut
1/4"-20
Lens
Sensor
Connections
1 2 3
OPENER TERMINAL SCREWS