Conditions

Possibilities

Solutions

Q-1¡GMotor does not operate

1. Is the supplied power
    and voltage correct?

2. Any blisters on the
    capacitor?

3. Are the gear trains free?

1. Checking by meter.

2. If so replace.

3. Remove motor to check.

Q-2¡GMotor stops running

1. Is power supply short
    circuited?

2. Any foreign objects in
    flow stream?

1. Check wiring.

2. Check for obstructions.

Q-3¡GUnable to fully pen/close

1. Loose/Misaligned cam?

2. Bent valve stem?

3. Mechanical stop
    adjustment incorrect?

1. Adjust/Tighten using
    spanner.

2. Replace valve stem.

3. Check position of stops.

Q-4¡GValve stops operating
         when motor is running.

1. Gear worn out?

2. Sleeve adapter worn ot or
    broken?

3. Broken valve stem or
    actuator transmission
    shaft?

1. Replace gear.

2. Replace sleeve adapter.

3. Replace valve stem or
    actuator transmission
    shaft.

Q-5¡GAbnormal control for
         operating two or more
         actuators simultaneously.

1. Please refer to the wiring
    diagram.

Q-6¡GMotor overheats.

1. Is the voltage correct?

2. Is valve too tight to
    operate?

3. High working frequency?

4. Is motor stem or bearing
    binding?

1. Checking by meter.

2. Replace valve.

3. Check duty cycle.

4. Replace the binding parts.

Q-7¡GAbnormal on/off angle
         on 3-phase voltage.

1. Wrong phase wiring?

1. Change phase wiring.

Q-8¡GOccasional on/off
         actuator failure.

1. Simultaneous input
    power on/off.

1. Check if the selection
    switch is normal.

Q-9¡GVibration when valve
         is closed.

1. Motor brake spring
    fatigued or Teflon worn?

1. Replace spring or Teflon.