Manaras Opera-MH Installation Instructions Manual page 20

SYMPTOM
"advanced close" limit switch is not
When door closes it
sufficiently advanced. Reversing
reverses to fully
edge is not disabled causing door
open.
to reverse.
It is normal for a radio receiver to
Radio-control does
take up to 10 seconds to "warm-up"
not function or
before being fully operational.
hesitates for 10 Therefore, when applying power for
seconds before the first time, the radio-control will
take 10 seconds before becoming
working.
fully operational.
Motor hums, starts
Capacitor defective.
when spun.
Defective limit switch.
Motor fails to shut Limit cams are not adjusted.
off at fully closed or
Limit drive chain broken.
opened positions.
Loose sprocket on limit shaft.
Limit screw does not rotate.
Sprocket key is missing.
Motor turns but
door does not Drive chain is broken.
move.
Clutch is slipping.
Motor hums or
Door locked or jammed.
does not run.
Limit cam retainer not engaging
slots in limit cams
Limit switches do
not hold their
Limit cams are binding on screw
setting.
threads which allows them to jump
position on retainer.
The "advanced open" limit switch is
insufficiently advanced from the full
Radio-control
"open" limit switch. The contact of
opens and reverses
the radio-control receiver is
the door, but when
maintained for 1.5 seconds when a
the door is fully
command is issued by the radio
opened, will close
transmitter. Therefore, when the
the door a little and door is fully opened, and a pulse is
sent from the transmitter, the
bounce back to the
receiver maintains the contact
open position
closed for 1.5 seconds. If the door
again. Door cannot
has closed and the "advanced
be closed except by
open" limit switch has returned to
the "close" push-
it's normal state, the reversing relay
button.
will be activated, and the door
bounces back to the open position.
Instructions applied only to Opera-MJ operators with a solenoid brake
Door locked or jammed.
Motor hums or
does not run.
Brake does not release.
Door opens fine but
when press close,
motor hums or Brake sloneloid not releasing.
blow the main
breaker.
Door closes fine
but when press
open, motor hums Brake sloneloid not releasing.
or blow the main
breaker.
20
PROBABLE CAUSE SUGGESTED ACTION
The "advanced close" limit switch needs to be adjusted
just slightly ahead of the end of travel "closed" limit
switch.
Check protocol code pins of the transmitter and receiver:
they must be the same. Press on the transmitter and
listen to the receiver: you should hear a faint click. The
transmitter battery may be dead or your receiver may
need servicing. To test for radio-control function, short
out momentarily terminals 7 and 8 on the terminal strip.
Operator should function normally. Have the radio-
control verified: the mini-relay inside the receiver may be
defective.
Replace
Operate limit switch manually while door is moving and
operate switch.
Verify and adjust.
Replace.
Tighten set screw.
Verify and replace accordingly.
Replace
Replace
Adjust clutch tension.
Verify manual operation of door.
Be sure retainer is in slots of BOTH cams.
Lubricate screw threads. Limit cams should turn freely.
Adjust the "advanced open" limit switch.
Verify manual operation of door.
Check wires to brake solenoid. Verify and adjust
brake tension.
Check 24V relay activating the brake solenoid on
closing side.
Replace.
Check 24V relay activating the brake solenoid on
opening side.
Replace