Common multi - stage pipeline pump troubleshooting

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Fault: can not reach the design flow  
the reason: method:
1. There is air inhalation   1. Check the temple ┢ lesson ⑴ ﹝ cowardice / span>  
2. As the water level decreases, the submergence depth is not enough, 2. Extend the suction pipe to deepen the depth of flooding
3. Impeller clogged with foreign body 3. Remove and remove foreign objects
4. Rotor part of the serious wear and tear 4. replace the seal bad
Fault: pump consumes too much power  
the reason: method:
1. The packing is too tight and heats up   1. Appropriate to relax
2. Flow too large   Off gate valve opening
3. Swivel body and shell have rub 3. repair   whole  
4. Pump bearing wear   4. Replace the bearing  
5 pump shaft bending   Replace or correct  
Fault: pump vibration increased
the reason: method:
1. Impeller partially blocked 1. Remove and remove foreign material
Impeller damaged   2. More   change  
3. Flow is too small   3. Slightly open the outlet valve
4. Shaft and motor do not mind 4. Fixed point to find correct  
Bearing damage 5. More   change
6. Mixed with air. Cavitation occurs 6. Change the suction position. Improve the suction pipe
Fault: pressure gauge pressure but still no water  
the reason: method:
1. Outlet resistance is too large 1. Check the hiss tick Oh trip ?? / span>
2. The direction of rotation is wrong 2. Check? Say? Two mutual transfer
3. The outlet pipe valve is not open 3. Open the outlet valve  
Impeller clogged   4. Remove impeller dirt
Fault: pump does not absorb water pressure gauge and vacuum gauge pointer violently beating
the reason: method:
1. Perfusion is not enough water   1. Check if the foot valve is leaking  
2. Piping and instrumentation joints leak   2. Tighten the leak
3. Suction is too high   Reduce the water absorption height  
Fault: pump is not suction vacuum table indicates a high degree of vacuum
the reason: method:
1. The bottom valve is not open or blocked 1. Check that chase? / Span>
2. Suction pipe resistance is too large   2. Change the water absorption  
The filter is clogged   3. Clean the filter
Fault: can not reach the design flow   Reason: Method: 1. There is air inhalation   1. Check the temple ┢ lesson ⑴ ﹝ cowardice / span>   2. As the water level is lowered. Inundation depth is not enough. 2. Extend the suction pipe to deepen the depth of flooding. 3. There is a blockage of foreign matter in the impeller. 3. Remove and drip the foreign material . 4. The rotor is severely worn . 4. Replace the seal . Big   Reasons: Method: 1. Packing pressed too tight. And fever   1. Appropriate to relax 2. Flow too large   2. Off gate valve opening 3. Rotary body and shell have rub 3. Repair   whole   4. Pump bearing wear   4. Replace the bearing   5 pump shaft bending   Replace or correct   Failure: Pump vibration increase causes: Method: 1. Impeller partially blocked 1. Removal and removal of foreign matter 2. Impeller damage   2. More   change   3. Flow is too small   3. Slightly open the outlet valve 4. Shaft and the motor is not the heart 4. Fixed point fix   5. Bearing damage 5. More   Change 6. Mixed with air Cavitation 6. Change suction position Improve suction hose failure: Pressure gauge pressure but still no water   Reason: Method: 1. The outlet pipe resistance is too high 1. Check the hiss tick Oh trip 2. Rotation direction is not 2. Check 说 said 相 两 two intermodulation 3. The outlet pipe valve is not open 3. Open the outlet valve   Impeller clogged   4. Clear the dirt inside the impeller failure: the pump does not absorb water pressure gauge and the vacuum gauge pointer violently beat reason: Method: 1. perfusion water enough   1. Check if the foot valve is leaking   2. Piping and instrumentation joints leak   2. Tighten the leak 3. Suction stroke is too high   Reduce the water absorption height   Fault: the pump does not absorb water vacuum table indicates a high degree of vacuum reasons: Method: 1. The end of the valve is not open or blocked 1. Check that chase? 2. Suction pipe resistance is too large   2. Change the water absorption   The filter is clogged   3. Clean the filter

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