33
Table 12 - Troubleshooting Guide – Part 2
Symptom
Probable Cause
Suggested Action
“Stop” button
doesn’t stop the
door
Two 3-push button stations (or more)
are connected in parallel.
➔
Verify and correct wiring (Stop buttons in
series, only Open & Close in parallel).
Door reverses to
fully open position
after the door closes
and reaches the
floor
Defective “Advanced Close” limit
switch.
➔
Verify and replace the limit switch.
A “Open” command is being given.
➔
Verify “Open” push-button or any closing
device for short-circuit.
Door doesn't open
or close, motor
hums or blows the
main breaker.
Mechanical door lock is engaged.
➔
Release the door lock.
Door is jammed.
➔
Verify manual operation of door.
Brake doesn't release, if applicable.
➔
Verify and adjust brake tension.
Loose wire on solenoid brake, if
applicable.
➔
Verify and correct wiring.
Defective solenoid brake, if applicable
➔
Replace.
Motor hums when
“Open” or “Close”
buttons are pressed.
Loose motor wires.
➔
Verify and correct wiring.
Defective capacitor.
➔
Replace.
Motor fails to shut
off at fully closed or
fully opened
positions
Defective limit switch.
➔
Operate limit switch manually while door is
moving. If door does not stop, replace the
switch.
Limit cams are not adjusted.
➔
Verify and adjust.
Limit drive chain is broken.
➔
Replace.
Loose sprocket on limit shaft.
➔
Tighten set screw.
Limit shaft does not rotate.
➔
Verify and replace accordingly.
Motor turns but door
does not move
Sprocket key is missing.
➔
Replace.
Drive chain is broken.
➔
Replace.
Clutch is slipping.
➔
Adjust clutch to proper tension.
Limit switches do
not hold their
settings
Loose drive or limit chain.
➔
Adjust chain to proper tension.
Limit cam retaining bracket is not
engaging in the slots of the limit cams.
➔
Be sure it is engaged in slots of both
cams.
Limit cams are binding on shaft
threads.
➔
Lubricate shaft threads. Limit cams should
turn freely.
Limit shaft has a slight “play”.
➔
Verify and adjust.
Door doesn't
respond to any radio
command
No power supply. (Transmitter light is
OFF)
➔
Replace transmitter's battery.
Radio antenna is not properly
positioned.
➔
Make sure antenna cable is not bent.
Cable should be passed through control box.
Ambient radio, environmental or
building structure interference.
➔
Check connection of plug-in antenna. If
required add an external antenna (socket on
receiver available).
For technical support, please call
1-800-361-2260
for more information
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Страница 45: ...45 Notes For technical support please call 1 800 361 2260 or visit www manaras com for more information...
Страница 46: ...46 Notes For technical support please call 1 800 361 2260 or visit www manaras com for more information...
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