20
Troubleshooting
WARNING! Turn the main power to the operator off before performing any maintenance or repair operations.
The manufacturer recommends that only qualified personnel check and maintain the equipment.
If you have a problem installing the operator, check
the problems and solutions listed below and refer to
the troubleshooting chart on the next page.
Problem: The operator does not respond to the
activating signal.
Solutions:
Make sure the main power switch is on.
Check the control panel terminal strip for possible
broken or disconnected wires.
If a radio signal is being used to activate the operator,
be sure the code sets on both the transmitter and
receiver are the same.
Momentarily short across terminals 1 and 2 on the
MPS control panel, or terminals 1 and 4 or 2 and 4 on
the B/C control panel. If this activates the operator, a
problem probably exists in the activating device itself.
Problem: The gate is closed and does not open.
Solutions:
Make sure the clutch adjustment is not too weak.
Increase the torque if the motor is running and the gate
is not moving. This may be necessary for especially
heavy gates.
Check that the closed limit switch is working. The
FCC status light (or Open LED) should be off. Make
sure that the limit switch plate is not too far away from
the limit switch. The distance between a plate and the
switch should be 3/16 in. (5 mm).
Check fuse F1 and replace it if necessary.
Problem: The motor is running in the wrong
direction.
Solutions:
Reverse the brown and black motor power leads on the
844 B/C control panel.
Problem: The gate opens, but will not close.
Solutions:
If there are no optional reversing devices connected to
the control panel, make sure a jumper is installed
between terminals 4 and 5 on the MPS control panel or
6 and 7 on the B/C control panel.
If optional reversing devices have been installed,
check them to see if they are working properly (an
activated reversing device will prevent the gate from
closing). Temporarily short across the relevant
terminals to bypass the reversing devices to see if the
gate closes. If the gate closes, then the problem exists
within the reversing device(s).
Problem: The gate opens and the operator
continues to run.
Solutions:
Check the FCC light (or Close LED) on the control
panel. It should be off. If it is not, check the alignment
of the limit switch plate.
If the FCC light is not off and the limit switch plate is
correctly adjusted, then replace the limit switch.
Note: If the limit switch plates are not detected by
the limit switch on an operator with the 844 B/C
control panel, the operator will run for
approximately 240 seconds and then stop. For an
operator with the 844 MPS control panel, the
motor will run for 120 seconds, and then the
control panel will be in alarm status.
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