Solution for fast rolling shutter doors not closing

1. The motor does not move or rotates slowly

Causes of failure: circuit break, motor burnout, stop button not reset, limit switch action, heavy load, etc.

Treatment method: check the circuit and connect it; replace the burnt motor; replace the button or press it several times; move the limit switch slider to separate it from the contact of the micro switch, and adjust the position of the micro switch; check the mechanical part Whether there is jamming, if there is, remove the jamming and clear the obstacles.

2. Control failure failure

Fault location and cause: The contact of the relay (contactor) is stuck, the stroke micro switch is lost or the contact piece is deformed, the slider set screw is loose, and the backing screw is loose to make the backing shift, so that the slider or nut cannot follow the wire. The rod rotates and moves, the limiter transmission gear is damaged, and the up and down buttons of the button are stuck.

Treatment method: replace the relay (contactor); replace the micro switch or contact piece; tighten the slider screw and reset the leaning plate; replace the limiter transmission gear; replace the button.

3. The hand zipper does not move

Cause of failure: the endless chain blocks the cross groove; the pawl does not leave the ratchet; the chain press frame is stuck.

Treatment method: Straighten out the ring chain; adjust the relative position of the ratchet and the pressure chain frame; replace or lubricate the pin shaft.

4. The vibration or noise of the motor is large

Causes of failure: The brake disc is unbalanced or broken; the brake disc is not fastened; the bearing loses oil or loses; the gear meshes not smoothly, loses oil or is severely worn; the motor current sound or vibration.

Treatment method: replace the brake disc or re-adjust the balance; tighten the brake disc nut; replace the bearing; repair the output gear of the motor shaft, lubricate or replace it; check the motor, and replace it if it is damaged.

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