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Water pump breakdown is diagnosed reach eliminate step
From;    Author:Stand originally
In overhauling a process, the diagnosis of water pump breakdown is a crucial link, a few kinds of common breakdown give out to reach under eliminate step, for everybody ground of have a definite object in view undertakes the diagnosis of water pump breakdown.

1, offer without the liquid, supply liquid is not worth or pressure is not worth

1) pump does not have affusion or do not have proper exhaust

Eliminate step: Examination pump case and entrance cop are all flood liquid.

2) rate is too low

Eliminate step: The wiring that checks electric machinery is correct, voltage is normal or the vapour pressure of turbine is normal.

3) system peak of flow is too high

Eliminate step: The head that examines a system (grind especially loss) .

4) sucks Cheng Taigao

Eliminate step: The only pressure head with existing examination (too small or too long meeting causes entrance cop very big grind loss) .

5) impeller or cop suffer

Eliminate step: The examination has trouble-free content.

6) rotational way is wrong

Eliminate step: Examine rotational way.

7) produces air or entrance cop has leak

Eliminate step: Examination entrance cop has the acupuncture point that do not have gas and / or air leak.

The filling in 8) filling case or sealed wear away, in making air leakage enters pump case

Eliminate step: Check filling or sealed change by need, it is normal that the examination lubricates.

9) smokes those who send heat or inspiratory head is not worth when volatile liquid

Eliminate step: Increase inspiratory peak of flow, seek advice to manufacturer.

10) bottom a powerful person is too young

Eliminate step: Install the heart valve of true measure.

11) heart valve or deepness of entrance canal immersion are insufficient

Eliminate step: Seek advice from correct immersion deepness to manufacturer. Remove vortex flow with fender.

12) impeller gap is too big

Eliminate step: Examination clearance is correct.

13) impeller damages

Eliminate step: Check impeller, undertake changing by the requirement.

14) impeller diameter is too small

Eliminate step: Seek advice from correct impeller diameter to manufacturer.

15) pressure expresses malposition truly

Eliminate step: Examination place is proper, the examination exports nozzle or conduit.

2, pump moves a little while to stop machine

1) sucks Cheng Taigao

Eliminate step: The only pressure head with existing examination (too small or too long meeting causes entrance cop very big grind loss) .

2) impeller or cop suffer

Eliminate step: The examination has trouble-free content.

3) produces air or entrance cop has leak

Eliminate step: Examination entrance cop has the acupuncture point that do not have gas and / or air leak.

The filling in 4) filling case or sealed wear away, in making air leakage enters pump case

Eliminate step: Check filling or sealed change by need. It is normal that the examination lubricates.
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