Zap JACKSHAFT MOTOR-CONTROL SYSTEM 815-RL - Manual (Page 27)

REASON & REMEDY
A. The door movement is stiff due to the door running tight against
the door frame in the fully closed position. In which case adjust the
position of the roller wheel supports to ease the pressure of the
door against the frame.
B. The door is badly out of balance. In which case re-tension the
counterbalance springs.
C. The door is near the maximum weight for the operator and the
Maximum Motor Current adjuster is set too low. In which case turn
the adjuster a further 20 degrees counter-clockwise.
A. There is an abnormality in the track, which is causing the roller
wheels to jump. This may be due to a misalignment of track
sections or a deformity of a damaged section of track. In which
case correct the track problem and ensure the door will run
smoothly by hand movement with the over-ride lever disengaged.
B. The Close Sensitivity adjuster is set too fine. In which case turn the
adjuster counter-clockwise by a further 20 degrees.
FAULT
1. The door stops just
after it has started in
the open direction.
2. The closing door
stops and reopens
before it contacts the
ground.
FAULT FINDING GUIDE
22