1004935-US-1.0 Issue 2008-11-13 41
15 Troubleshooting
Fault Possible reasons why Remedies/Explanation
The door does not open
- The motor does not start
Program selector is set to OFF Change setting
No motor power present Check motor cable
No high voltage power Check power
Blown fuse Replace fuse
Activation unit does not function Strap impulse inputs
- The motor starts Electric strike plate is binding Adjust strike plate
Arm system has come loose Readjust pre-tension and tighten arm system
The door does not open to
required angle
Open Limit Switch has come loose Check limit switch
The door does not close Constant impulse is created Disconnect activation unit or replace control unit
The door does not open
fast enough
Pump pressure is too low Adjust pump pressure
The door delays before
opening
“Lock-kick” valve is opened too much Adjust valve screw
No smooth braking during
operation
Pump pressure too high Adjust pump pressure
Low speed distance too short Increase opening angle, or
increase pre-tension of arm system
High sound level Motor in contact with backplate Mount two extra screws at the motor side of the
backplate to secure to wall
The door does not stay
open or cannot open
Magnetic valve fails to operate Check by pressing the pin on top of the magnetic
valve.
If the door stops, then check the resistance (should
be 150 ohm) for the wire between the magnetic
valve and the control unit.
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