1. Common problems of self suction pump
Since the common fault is a water pump light is reduced, even without water absorption, if continuous electricity is heat pump faster. ,
The problem is three points:
1). The pump body seal is formed inside the air tight, water is not clean, not up to the request of vacuum;
2). Assembly is not reasonable, the pump is not concentric, individual components are not installed in place;
3. The gap between the impeller and the pump casing device is not reasonable.
2. Rapid repair approach
1). To see the motor shaft and pump shell hole is not adhere to this point is very critical. View is focused on the motor end cover is not a rehabilitation in situ, rotor bearing and end cover all rolling should be sensitive, grasp the trick is to side assembly machine pump, while rolling adjustment, as a result of the machine pump is shared with a rotor shaft.
2). Accurate device impeller up and down efforts, focusing on the direction of the impeller and the pump shell between the accuracy of error free, if there is error, the impeller will be contrary to the correct orientation, the formation of suction does not come.
3). Check the size of the suction). First in the pump shell filled with water; hand blocking the pump water inlet, the water level in the mouth is seen to reduce the scene. If the water level is reduced, it is clear that the sealing performance is not good, but also along the re adjustment of the seal, until the pump water level in the shell to reduce the stop. Then check the size of the suction pump still in the pump shell irrigation with water, blocked by a hand pump suction mouth, connected to power the pump turn up, first look at the water pump to jet was high, and then look at the palm of your hand to be pump suction mouth suction is solid, it is viewing the self suction pump can normal water crucial step.
4). Of the impeller. If the impeller on the device error, the motor will not work together after the water pump. The impeller device accurately, usually l minutes can pump water, and water in their. When the first seal chassis with proofreading sealed after put into. Pay attention to the pros and cons of the wrong direction. Accurate direction is to the hard plastic plate frame end toward the direction of the device, and then the impeller is safe, can be used with a small hammer to gently tap the impeller in place, at the moment the impeller will be on the end of the pump shell. Then, the motor shaft end of twisting the head with the hand, see the impeller work is not sensitive. If the motor shaft does not move, this is the shell wall formed by the impeller. Can use the pump outside the two plates of the small screws, screw into the leaf screw is to allow the intention of the impeller out of some of the impeller out of the number is a key step. Should pay attention to the rotary side into the side exit two small pieces of screw, edge rolling motor axis, Shun wheel rolling contrast sensitive. And do not touch the pump shell, the pump shell cover pad coating sealant, and clean the pump cover and the pump body joint surface dirt and tighten the pump cover.
3. Repair after inspection
1) check the leakage of water leakage. In the pump shell filled with water, with the palm of the pump suction personnel, through the investigation of the water level is not reduced.
2). Check the size of the suction). Adhere to the pump shell spit export filling with water, and hands to block the pump suction personnel, now the power supply is switched on, the pump will handle tightly suction on the pump inlet, want to leave can not be separated from, if you feel the pump suction pressure is low, you need to pry the pump shell and readjust the impeller of the range.
3) check the pump body temperature rise. Household self-priming pump work continuously for more than 10 minutes, touch the pump body no sensation, such as the temperature rise too fast, is illustrated in mechanical parts of the card lag phenomenon, must readjust.
