What should be paid attention to when reusing pumps and control cabinets that are not used for a long time

What should be paid attention to when reusing the long-term water pump, what should be paid attention to when reusing the long-term control cabinet, and what should be paid attention to when reusing the long-term water pump
How to ensure the normal operation of your water pump and control cabinet after "long holiday"?
1、 What should be paid attention to when reusing long-term pumps
1. Before reusing the long-term water pump, the home page should observe whether the water pump wire and cable are damaged, and check whether the cable connector and socket are loose.
2. If it is a self-priming pump, the water in the pump chamber should be drained before long-term shutdown, and anti freezing measures should be taken in winter.
3. Since the rubber parts of the pump do not need mechanical seal for a long time, it is easy to be oxidized, which leads to the adhesion between the rubber and the pump shaft. After confirming that the power parts are normal, first manually rotate the pump shaft for two turns to separate the rubber parts of the seal from the pump shaft, which can avoid the phenomenon of rubber pulling caused by the direct starting of the motor and water leakage.
2、 What should be paid attention to when reusing the control cabinet that has not been used for a long time
With the resumption of all kinds of factories, frequency conversion and soft start equipment are about to enter into operation. Due to the long Spring Festival holiday in 2020, in order to avoid unnecessary losses caused by improper operation or other reasons, how to maintain the frequency converter and frequency converter? Here, the water pump engineer reminds you to do the following:
What we need to pay special attention to here is that the majority of municipal users of our large flow portable submersible pump must pay attention to, because the frequency of the portable submersible pump used in this field is not high, and it is often not used for a long time, so we must pay attention to what needs to be paid to when reusing the control cabinet that is not used for a long time
1. "Two checks and one guarantee" shall be carried out before the maintenance of frequency converter and the maintenance of frequency converter
Before commencement, please check all kinds of mechanical equipment for obvious damage; check the integrity of the circuit for damage and leakage; ensure that all kinds of electrical products are free of water, short circuit condensation and other phenomena before power on.
2. Before maintenance of frequency converter and maintenance of frequency converter, power on orderly. First, close the main switch to power on, then close the opening switch to power on, and then close all kinds of mechanical equipment switches to power on.
3. In tension and heavy load situations, please remove the tension and heavy load before starting the machine to keep the equipment easy.
4. After the maintenance of frequency converter and the maintenance of frequency converter, before operation, please heat up the workshop or ventilate and remove the moisture to avoid the electrical fault caused by condensate. After the electrical drive equipment is powered on, first power on for 10-20 minutes for observation, then conduct low-speed test run for a period of time, do pre inspection before operation, and then operate at full speed after there is no error.
Therefore, as long as the maintenance and operation of the frequency converter are carried out according to the above points, all kinds of faults caused by long-term shutdown can be avoided. We hope that everyone can operate safely and operate without faults.
There is a distribution box in a humid environment. Before power on, it is very important to open the distribution box for ventilation, and conduct heating, dehumidification and dew removal if possible.
Some suggestions on the maintenance of frequency converter and the maintenance of frequency converter before commencement, I hope to guarantee your safety and smooth production!
The above converter maintenance and converter maintenance methods can only be used for simple fault detection. If it is not a simple problem that can be judged, it is recommended that you go to the regular converter maintenance manufacturer for comprehensive detection.