People who use diesel water pumps for the first time will encounter some problems more or less. The following Hansa diesel water pump manufacturers have summarized the treatment methods of three common faults of diesel water pumps for reference only:
1. Unable to start
First, check the power supply: whether the connector is connected firmly; whether the switch is tightly connected; whether the fuse is blown; whether the three-phase power supply is lacking. If there is an open circuit, poor contact, blown fuse, or phase loss, the cause should be identified and repaired in a timely manner. Second, check whether it is a mechanical failure of the pump itself,
Common reasons are: the packing is too tight or the impeller and the pump body are blocked by debris; the pump shaft, bearing, and leakage ring are rusted; the pump shaft is severely bent. Remedy: loosen the packing and dredge the water trough; disassemble the pump body to remove debris and rust; remove the pump shaft to correct or replace the new pump shaft.
Second, the pump heat
Causes: Bearing damage; the gap between the rolling bearing or the bracket cover is too small; the pump shaft is bent or the two shafts are not concentric; the tape is too tight; the lack of oil or the oil quality is not good; the balance hole on the impeller is blocked, the impeller is out of balance, increasing the direction Thrust on one side.
Remedy: replace the bearing; remove the back cover, install a gasket between the bracket and the bearing housing; investigate the pump shaft or adjust the concentricity of the two shafts; properly loosen the tightness of the tape; add clean butter, butter accounts for the bearing About 60% of the inner gap; remove the blockage in the balance hole.
3. Insufficient flow
This is because: the power speed is not matched or the belt slips, which makes the speed low; the installation angle of the axial flow pump blade is too small; the head is insufficient, the pipeline is too long or the pipeline has a right angle bend; the suction stroke is too high; the bottom valve, pipeline And the impeller is partially blocked or the impeller is defective; the water leakage of the outlet pipe is serious.
Remedy: restore rated speed, remove belt greasy dirt, adjust belt tightness; adjust blade angle, lower water pump installation position, shorten pipeline or change the curvature of pipeline; seal leak of water pump, tighten packing; remove blockage Replace the impeller; replace the leak reduction ring to block the leak.
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