Controlled Products Systems Group 1150-080 - Manual (Page 26)

1150-065-F-1-11 24
If the motor runs in both steps from previous page, replace the control board. If the motor does not
run, or runs in only one direction, problem can be a bad motor, motor capacitor, wire connections
from the control board to the motor or a bad control board.
Symptom Possible Solution ( s )
Gate starts to close,
then reverses to
open.
Gate closes and
then re-opens.
Loop detector
LED is ON
continuously.
Loop detector
LED never
activates.
Loop detectors
do not open or
reverse gate.
Gate opens but
will not close.
• SW-2, switch 3 may be set incorrectly. Be sure that this switch is in the ON position for overhead
gate operation. Activate any keying device to determine if operator returns to normal operation.
• Check to be sure that the operator is running in the proper direction. Turn power OFF, and then back
ON. Activate an external keying device. Operator should run in the open direction. If operator runs in
the close direction, turn power OFF and change direction switch SW-1, switch 1. Go to the previous
symptom if operator now opens but will not close.
• Be sure that the respective LED on the control board lights when the external keying device
connected to the respective terminal is activated. If LED does not light, momentarily place a jumper
wire from terminal 1 to the input terminal being checked. If LED lights and gate opens, problem is
with the external keying device. If LED does not light, replace control board.
• Check motor:
Place a jumper wire from terminal 18 to terminal 17. CAUTION – HIGH VOLTAGE. Turn the power
switch on. The motor should run. Turn the power switch off and remove the jumper.
Place a jumper wire from terminal 18 to terminal 16. CAUTION – HIGH VOLTAGE. Turn the power
switch on. The motor should run in the opposite direction. Turn the power switch off and remove
the
jumper.
If the motor runs in both steps above, replace the control board. If the motor does not run, or runs
in only one direction, problem can be a bad motor, motor capacitor, wire connections from the
control board to the motor or a bad control board.
Gate closes but
will not open.
• Re-adjust the close reverse sensitivity.
• Disconnect the gate from the operator and check that the gate operates freely without any binding.
• Check the loop detector LEDs and input LEDs. Any that flash ON will cause the gate to reverse.
• Replace the circuit board.
• Activate the RESET switch on the loop detector.
• Decrease loop detector sensitivity.
• Check loop wire for resistance to ground with a meg-ohm meter. Should be 100 megohms or higher.
If less, problem may be with loop wire.
• Be sure that lead-in wire from loop is twisted.
• Be sure that all loop connections are soldered.
• Replace loop detector.
• Increase loop detector sensitivity.
• Check continuity of loop wire. Should be 0 ohms. If continuity check indicates greater than 0 ohms,
check all connections or replace loop wire.
• Move loop detector board to the other loop detector port on the control board, then check loop
operation. If loop detector still fails, replace loop board with a known good one. If problem
continues, ground loop may be too small to detect vehicles – replace ground loop.
• If loop detector LED illuminates when vehicle crosses over, problem may be in loop detector board.
Replace with a known good detector and re-check. If problem continues, control board may be bad.
• If loop detector LED does not illuminate, see above symptom.
• Check for any input or loop detector LEDs that are ON.
• Check that the operator is running in the proper direction, switch SW-1, switch 1 should be ON.
Continued from previous page.