Dual-stage rotary vane vacuum pump does not turn cause analysis

Two-stage rotary vane vacuum wilden pump does not turn is unknown can not first open the pump, so as not to aggravate failure. Hand plate moving and can not dish move.

Pumps are able to plate move without transfer reasons are analyzed as follows:

A belt slip;

2 couplings failure;

3, power no power.

4, the motor is damaged;

5, the electrical wiring;

Second, not dish move or dish up the heavy, possible causes are as follows:

Start the pump temperature is too low, the pump oil viscosity is too high;

2, the design and manufacture of the reasons for stopping the pump too much oil back. The oil level is too high stop pump oil back too much (too much fuel, or water vapor condensation in the pump, or water condensation in the exhaust pipe back to the pump);

Foreign body into the trachea, welding slag, oxide in the pump (3;

4, the rotary vane pump parts, springs and other debris;

5, the deformation of the rotary vane is stuck;

6, occlusion (copper sleeve, the rotor wall, pump cover, stator, bearings).