Pump can not start or start load is large

Pump can not start or start load is large

Reasons and treatment methods are as follows:

(1) The prime mover or power supply is abnormal. Treatment is to check the power supply and prime mover situation.

(2) The pump is stuck. The processing method is to use the hand disk moving coupling inspection, if necessary, disassembly inspection, to eliminate static part of the fault. (The pump is easy to jam the phenomenon of gear oil pump performance is particularly prominent.)

(3) Packing is too tight. The treatment is to relax the packing.

(4) Discharge valve is not closed. The treatment is to close the discharge valve and restart.

(5) Balance pipe is not unobstructed. The treatment method is to dredge the balance pipe.

4.2 The pump does not discharge liquid

Reasons and treatment methods are as follows:

(1) The irrigation pump is insufficient (or the gas in the pump is not exhausted). Treatment is to refill the pump.

(2) The pump is not steering correctly. The solution is to check the direction of rotation.

(3) The pump speed is too low. The processing method is to check the speed and improve the speed.

(4) The filter is blocked and the bottom valve is not working. Treatment is to check the screen, eliminate debris.

(5) The suction height is too high, or the suction tank vacuum. Treatment method is to reduce the suction height; Check suction tank pressure.

4.3 The pump is interrupted after draining

Reasons and treatment methods are as follows:

(1) Air leakage in the suction line. The treatment method is to check the suction side of the pipe joint and packing box seal.

(2) the suction side of the gas is not exhausted when the pump is filled. Treatment is required to refill the pump.

(3) The suction side was suddenly blocked by foreign bodies. The treatment method is to stop the pump to deal with foreign matter.

(4) Inhalation of large amounts of gas. The treatment method is to check whether the suction is vortex, submersion depth is too shallow.

4.4 Insufficient Traffic

Reasons and treatment methods are as follows:

(1) Same as 2. 2, 2.3. The solution is to take corresponding measures.

(2) The static head of the system increases. The solution is to check the liquid height and system pressure.

(3) Increased resistance loss. The treatment method is to check the pipeline and check valve and other obstacles.

(4) The wear ring of the shell and impeller is too large. The treatment method is to replace or repair the wear ring and impeller.

(5) Leakage in other parts. The treatment method is to check the shaft seal and other parts.

 

The article is written by high temperature heat conduction oil pump, please indicate the author.