故  障

原  因

消  除方法

1、泵不出水，壓力表及真

空表指針劇烈跳動。

注入泵的水不夠；進水管漏氣。

再往泵內(nèi)注水；堵塞漏氣處。

2、泵不吸水，但真空表顯

示高度真空。

底閥沒打開或淤塞；吸水管阻

力太大；吸水高度太高。

校平或更換底閥；清洗或更換

吸水管；降低吸水高度。

3、泵不出水，壓力表顯示

有壓力。

泵軸旋轉(zhuǎn)方向不對；出水管阻

力太大；葉輪淤塞；轉(zhuǎn)數(shù)不夠。

改正轉(zhuǎn)向；減少水管長度或清

除淤塞；清洗葉輪；增加轉(zhuǎn)數(shù)。

4、泵流量減少或揚程

下降。

葉輪或管路阻塞；密封環(huán)或葉輪

磨損嚴重；轉(zhuǎn)速低于規(guī)定值。

清洗葉輪或管路；更換損壞的

零件；調(diào)整到額定轉(zhuǎn)速。

5、泵消耗的功率過大。

填料壓得太緊；葉輪與雙吸密

封環(huán)磨損；流量過大。

擰松填料壓蓋；消除機械磨擦；

關(guān)小出水閘閥。

6、泵內(nèi)聲音反常，吸不上

水。

吸水高度過高；吸水管漏氣；流

量過大，發(fā)生汽蝕。

減少吸水高度；堵塞漏氣處；調(diào)

節(jié)出水閘閥在規(guī)定工況用。

7、泵振動厲害。

泵發(fā)生汽蝕；葉輪不平衡；泵與

電機不同心；地腳螺栓松動。

消除汽蝕；葉輪校平衡；校泵與

電機的同軸度；擰緊地腳螺栓。

8、軸承過熱。

潤滑油不足或過多，或變質(zhì)；泵

與電機軸不同心。

檢查油量，清洗軸承并換油；校泵

軸與電機的同軸度。

Fault

Cause

Remedy

After the pump starting，no

water is drawn in, and the

hands of vacuum gauge and

manometer beat heavily．

The water poured in the pump is not enough

Leakage of air found from the suction

pipe．

Pour water into the pump again．

Block the leaking place．

The pump doesn’t draw any

water but a high degree vacuum is indicated on the vacuum gauge．

The foot valve is not opened．

The resistance of suction is too high．

The suction head is too high．

C0rrect or renew the foot valves．

Clean or renew the suction pipe．

Make the suction head lower．

No water is pumped out，but

high pressure is shown on the

outlet manometer．

The direction of the rotation is not right．

The suction resistance is too high．

The impeller flow passage is clogged．

The revolutions is not enough．

Change the direction of the rotation．

Check the length of the pipe．

Whether it clogged．

Clean the impeller．

Increase the revolutions．

The flow rate is decreasing or

the head is low．

The impeHer flow passage or(inlet pipe and

outlet pipe)in-out-let pipes are clogged.

The seal ring or the impeller is out worn.

The running speed of the pump is lower than

Clean the impeller and the pipe passage way.

Renew the worn parts．

Increase the revolutions．

Over consumption of the

pump power.

Packing is too tight and the impeller is

rubbed by double suction seal ring．

The flow rate is too Iarge．

Loosen the packing gland．

Clear out the mechanic friction．

Turn the discharge valve brake smaller．

Uexpected noises are heard

and no water is drawn．

The suction resistance is too high．

The suction head is too high．

Leakage of air found fmm the suction pipe．

Error is found．

Check the pipe and the foot valve．

Make the suction head Iower．

Block the leaking place．

Adjust the use of discharge breake valve in

snecific workine condition．

The pump vibrates heavily．

Error is found．

The impeller is not balance．

The Dum’p shaft is not concentric with the motor．

The nuts of tbundation are loose．

Clear out the error．

Correct impeller static balance．

Screw the unts of the foot bolt tightly．

Correct the coaxial degree between pump and

nlolor shaft．

The beating is overheated．

The grease is not enough or too much or goes

bad．

The pump and the notor shaft is not conrertlric．

Clean the bearing and renew the oil．

Correct the pump and the motor shaft coaxial degree．