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Gate opens a short
distance, then
stops and reverses.
• Check that the clutch is adjusted properly and is not slipping.
• Disconnect the gate from the gate operator and check that the gate slides freely without
any binding.
• Re-adjust the reverse sensitivity.
• Check the COUNTER LEDs on the circuit board. They should blink as the operator is
running. If either COUNTER LED is not blinking as the operator is running, check that the
magnetic pickup transistors are within 1/8 inch of the plastic protective cover above the
magnet assembly on the main shaft.
• Replace the circuit board.
Gate opens but will
not close.
• Check the input LEDs. Any ON will hold the gate open and indicates a problem with a
keying device.
• Check the secondary safety devices. Any activated will hold the gate open and indicates a
problem with the safety device.
• Check the loop detectors. Any activated can hold the gate open and indicates a problem
with the loop detector or ground loop.
• Operator may be in a “soft shutdown.” Activate any keying device to determine if operator
returns to normal operation.
• If automatic close is desired, be sure SW-1, switch 2 is ON.
• Check motor as described on previous page.
Gate closes but will
not open.
• Operator may be in a “soft shutdown.” Check input LEDs on terminals 2, 4 and 5. If any
are ON, momentarily disconnect, then re-connect the wire going to the respective terminal.
Operator should open.
• Check to be sure that the operator is running in the proper direction. Turn power OFF, and
then back ON. Activate a 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 above section if operator now opens but will not close.
• Be sure that the respective LED on the control board lights when the keying device
connected to the respective terminal is activated. If LED does not light, momentarily place
a jumper wire from terminal 18 to the input terminal being checked. If LED lights and gate
opens, problem is with the keying device. If LED does not light, replace control board.
• Check motor as described on previous page.
Gate starts to
close, then
reverses to open.
• Check that the clutch is adjusted properly and is not slipping.
• Re-adjust the 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.
• Check the COUNTER LEDs on the circuit board. If either COUNTER LED is not blinking
as the operator is running, check that the magnetic pickup transistors are within 1/8 inch of
the protective plastic cover above the magnet assembly on the main shaft.
• Replace the circuit board.
Gate closes and
then re-opens.
• Check for any input or loop detector LEDs that are ON.
• Check that the operator is running in the proper direction (see “gate closes but will not
open” above).
• Turn power off, then back on and reset the operator limits.
Entrapment alarm
is sounding.
Operator will not
run.
• Operator is in a “hard shutdown” condition. Reset switch must be activated to return
operator to normal operation.
Entrapment alarm
sounds a short
beep every 5
seconds.
• Operator has been in a “hard shutdown” condition in excess of 5 minutes. Reset switch
must be activated to return operator to normal operation.
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