How is the deep well water pump installed?

How is the deep well water pump installed?
1, deep well water pump lifting should pay attention to protect the cable, cable to overhead, the power cord should not be too long. Do not allow the cable to force the unit when it enters the water, so as not to cause the power cord to break. The lifting device (such as tripod, hoist or electric hoist, etc.) from the weight should be greater than the weight of submersible pumps, and leave enough room. Before the lifting of the artificial rotation of the impeller, check its rotation is flexible, the main contactor contact is good, cable and cable connector with or without rupture, abrasion marks, motor shell grounding is reliable (to ensure safety, ground wire should be more than other Line grow 5mm), and check the phase line with a multimeter turn on the situation. Check the balance of the three-phase winding balance, the general measurement of the size of the submersible pump power to select the appropriate measurement block, the measurement must be noted that the red and black, respectively, two test pieces at the same time contact the detection part (ie conductor) to reduce the error and years Disturb.
2, the installation does not allow the submersible pump or put it directly placed in the sewage inlet, according to the scene to determine the minimum distance from the bottom of the submersible pump, so as not to be buried in the mud or pump inlet blocked by suspended solids, resulting in heat transfer rate Reduce the motor winding temperature rise, insulation aging, shorten the life of the stator or cause no reason to trip. Do not put the pump directly on the mud or floating sand, such as the need for temporary installation, it is recommended that the pump placed in a large floor or solid ground, so as to avoid sinking due to vibration. After installation, until the submersible pump all immersed in water, before receiving the power supply with 500V megger look at the motor three to the insulation resistance, the minimum not less than IMΩ deep well submersible pump.