No matter what device is used for a long time, there will be such and such problems. Vacuum pump is so, when normal operation suddenly strike, it is really confusing. Let's talk about several starting problems of vacuum pump.
1、 The device cannot be started
1. Possible causes: insufficient power supply of motor leads to insufficient speed; insufficient water supply; too large clearance between impeller and distribution board; mechanical seal damage leads to water leakage and air leakage; impeller wear is too much; circulating water cannot be discharged.
2. Troubleshooting: check whether the power supply voltage is within the rated voltage range of the motor; increase the water supply (control within the correct range, otherwise the motor will be overloaded and heated); reduce the clearance between the impeller and the distribution board (generally 0.15-0.20mm); replace the mechanical seal; replace the impeller; check the pipeline at the water outlet.
2、 The vacuum pump is noisy after starting
1. Possible causes: insufficient power supply voltage of the motor; lack of phase operation of the motor; corrosion caused by long-time unused pump; suction of sundries in the pump; impeller drag distribution board.
2. Troubleshooting: check whether the power supply voltage is too low; check whether the motor wiring is reliable; if the pump is not used for a long time, add a little rust remover or open the pump cover to remove the rust manually; open the pump cover to remove the sundries; adjust the distance between the impeller and the distribution board.
3、 The device is difficult to start
1. Possible causes: the water level in the vacuum pump is very high when starting; the packing gland is too tight; the internal parts are rusted; the discharge pressure is increased or the back road is not smooth; the power distribution room is in fault.
2. Treatment method: start according to the specified water level (below the automatic drain valve); loosen the packing gland; pull the rotor hard and wash it with water supply; check whether the back path is smooth and reduce the pressure; contact the electrician for treatment.
The above is a detailed introduction to several problems of vacuum pump start-up. Failure to start, difficulty in start-up, loud noise after start-up, etc. are common problems of abnormal equipment. If similar problems are encountered, they can be remedied in time according to the above content to avoid affecting the work.
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