Controlled Products Systems Group 1150-080 - Manual (Page 25)

1150-065-F-1-11 23
4.3 Troubleshooting
A malfunction in a loop or loop detector can cause the gate operator to hold open, or not detect a vehicle when it is present over
the loop. Pull the loop detector circuit boards from the loop ports on the operator circuit board. If the malfunction persists, the
problem is not with the loop system. For more information refer to the loop detector instruction sheet and the DoorKing Loop
and Loop Detector Information Manual.
Check to be sure that there are no shorted or open control wires from the external keying devices to the gate operator. If a
external keying device fails to operate the gate, momentarily jumper across terminals 6 and 14 on the operator circuit board. If
the gate operates, this indicates that a problem exist with the external keying device and is not with the operator.
Check the high voltage supply. A voltage drop on the supply line (usually caused by using too small supply voltage wires) will
cause the operator to malfunction. Refer to the wire size chart on page 13.
• Check that power to the operator is turned ON.
• Transformer may be overheated. Turn power off and allow board to cool for several minutes then
retest. Check for low 120 VAC power and low voltage shorts.
• Check for 120 VAC at terminals 18 and 19. If voltage measures 0, check power. If voltage measures
OK, check the terminal strip or replace the circuit board.
• Disconnect the gate from the gate operator and check that the gate moves freely without any
binding.
• Re-adjust the open reverse sensitivity.
• Replace the circuit board.
• Check the input LEDs. Any ON will hold the gate open and indicates a problem with a external keying
device.
• Check the secondary safety devices. Any that are activated will hold the gate open and indicates a
problem with the safety device.
• Check the loop detectors. Any that are activated can hold the gate open and indicates a problem
with the loop detector or in-ground loop.
• SW-2, switch 3 may be set incorrectly. Be sure that this switch is in the ON position for overhead
gate operation. Activate any external keying device to determine if operator returns to normal
operation.
• If automatic close timer is desired, be sure SW-1, switch 2 is ON.
• 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. Continued on next page.
Operator will not
run – power LED
is OFF.
Symptom Possible Solution ( s )
Operator will not
run – power LED
is ON.
Gate opens a short
distance, stops
and reverses.
Gate opens but
will not close.
• If a photo-cell is used as a secondary entrapment prevention device, check to be sure that the beam
is not blocked.
• Momentarily jumper terminal 1 to terminal 5 or press “Push to Operate” button. If the input LED
does not come ON, check the terminal strip or replace the circuit board. If LED does come ON,
proceed to next steps.
• Be sure that the chain is not too tight. A too tight chain may cause the operator to stall.
• Turn power switch OFF and remove the control board.
• 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.