The water pump protector is a device specially used to protect the water pump. It can best protect the water pump in the case of various problems with voltage and current, and avoid major damage to the pump due to current and voltage problems. At the same time, various failures of the water pump can also be displayed, allowing technicians to quickly and accurately find the cause of the failure. So which pump failures will the water pump protector prompt?
The water pump protector will prompt which water pump failures
1. Sensor circuit failure
If the water pump protector shows that the sensor in the water pump has its loop failure, then it is necessary to connect the sensor in series with a multimeter, check the loop current of the sensor, and judge the fault loop through the characteristics of wrong polarity and delay. If you are not sure which sensor circuit the leak alarm belongs to, you should also measure the current of the sensor in order to find the sensor without taking the pump out.
2. Ground fault
If the pump has a ground fault, a stable pump protector can also be displayed. At this time, the technician should check whether there is an abnormality in the grounding of the signal core, and if there is, prevent false leakage instructions caused by this. When checking the ground fault, use the ohm range of the multimeter to do the test instead of using a voltage greater than five hundred volts, and also measure between each sensor lead and the ground.
3. Leakage failure
If the water pump has a leakage fault, it can also be checked by the response of the water pump protector. When a leak alarm occurs, a resistor less than five hundred ohms can be connected to the sensor output of the pump for detection, but it should be noted that there will be a delay before the leak light turns on during detection.
Because the water pump protector can display some shortcomings that occur when the water pump is running, technicians can quickly find the crux of the problem by scheduling according to the displayed fault indication, so that the problem can be solved in time to restore the pump to normal. Therefore, in order to improve work efficiency, you should buy from high-quality manufacturers and learn more about the quality of the pump protector is reliable.