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The common fault and resolution of valve
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2006-08-09 11:21:08
(has been browse 12 times)
The common fault and resolution of manual valve：
Fault Reason analysis Fault resolution Untight close; leak 1. The sealing material is aging.
2. The reducer limits unsuitably.
3. Transmission organ is broken.
4. The sealing surface wears and1. Exchange the sealing material.
2. Adjust the upper limit screw of the reducer.
3. Repair or exchange the worm wheel/worm/connecting sleeve
4. Exchange the valve key and valve handle.The common fault and resolution of Electric device：
The common fault and resolution of Pneumatic device：Fault Reason analysis Fault resolution Torque and travel switch don’t work 1. The phase sequence is incorrect.
2. The circuitry is wrong.
3. The contactor absorbs the iron and does not release it.1. Exchange the phase sequence of the electromotor.
2. Check up and correct the circuitry.
3. Clean or exchange the contactor.The electromotor operates abnormally, with constant buzz. Two-phase operation Check up the driving circuit and turn on three-phase. The valve is not in-the-place, and the electromotor does not operate. 1. The travel controller adjusts unfavorably.
2. Torque controller works ahead1. Readjust the travel switch controller.
2. Adjust the torque controller.Fault Reason analysis Fault resolution Hard to open the valve. The air supply pressure and the wedge-caulking power are overlarge. 1. Check up and adjust the air supply pressure (0.4～0.7MPa)
2. Adjust the limit screw.Hard to close the valve tightly. 1. The air supply pressure is not enough.
2. The limit place is unsuitable.
3. The magnetic coil is burned.
4. The air supply pollution causes that the granule enters the pneumatic device1. Check up and adjust the air supply pressure (0.4～0.7MPa)
2. Adjust the limit screw.
3. Exchange the magnetic coil.
4. Clean the air supply or the pneumatic device to improve the working conditions.