Manaras Opera-H - Page 33

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 or visit www.manaras.com for more information