40
Table 15 - Troubleshooting Guide - Part 2
Symptom
Probable Cause
Suggested Action
Door doesn't respond
to “Open” command,
but does respond to
“Close” command
Defective “Open” push-button or “Open limit
switch.
➔
Replace push-button or limit
switch.
Loose wire on “Open” push-button or
“Open” limit switch.
➔
Verify and correct wiring.
Door doesn't respond
to “Close” command,
but does respond to
“Open” command
Defective “Open” push-button or “Open limit
switch.
➔
Replace push-button or limit
switch.
Loose wire on “Open” push-button or
“Open” limit switch.
➔
Verify and correct wiring.
Door reverses to fully
open position after the
door closes and
reaches the floor
The “Close” limit switch is not being
engaged by travelling cam.
➔
The “Close” limit switch needs to
be adjusted properly at the end of
travel.
An “Open” command is being given.
➔
Verify “Open” push-button or any
opening 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.
Faulty 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.
Poor radio range
Transmitter battery is low.
➔
Verify and replace 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 49: ...49 Notes For technical support please call 1 800 361 2260 or visit www manaras com for more information ...
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Страница 52: ...Reg T M of 9141 0720 Québec Inc BOOK 1029 REV 0 2019 09 06 ...
