Submersible pump before use, to respond to submersible pumps, switches and cables and other equipment to conduct a comprehensive inspection.
1. Submersible pump before use, should check the motor stator winding insulation resistance of the ground, the value of which is generally above 50~100. When the measured cold insulation resistance value less than 1 megohm, should check the stator winding insulation resistance is lowered, discharge failure, insulation resistance returned to normal values after can be used, otherwise it may cause the damage of submersible motor stator winding.
2. Non-clogging sewage pump before use should be installed special protection switch and specifications conform to the overload protection switch, in order to make the submersible pump in use failure, can get the reliable and effective protection and does not damage the stator winding of submersible motor, even the whole motor.
3. Submersible pump before use and the shell should be reliable grounding, submersible sewage pump leads to the cable core wire in ground symbol with yellow and green two-color grounding wire shall be reliably grounded. If limited to conditions, there is no fixed ground, can be used in the power accessories or submersible pumps used in the annex to the location of the wet land of 2 meters of metal rods as ground.
4. Submersible pump before use, the QY oil filled submersible pump should check the motor inside the sealed oil chamber is full of oil, if not in accordance with the provisions of filled with should supplement fill to the specified oil surface; the water filling type submersible pump, motor cavity should full of water or water solution prepared as specified by the manufacturer.
5. Submersible pump should generally be vertical hoisting, don't use the horizontal should not be sunk in the mire, prevent due to motor cooling bad cause damage, water submersible pump outside available bamboo basket or network covering to prevent weed debris blocking the filter screen, affecting the normal inhalation or around water pump impeller, the diving pump damage.
6. Submersible sewage pump generally do not need to be dehydrated operation, such as the need to test run on the ground, the dehydration operation time is generally not more than 2min. Water filled submersible pump, such as the motor is not filled with water (filtration cycle), the operation is strictly prohibited.
7. The three-phase submersible pump before use, should check the rotation direction is correct, such as the diving pump is started after a small amount of water that turned against the, should immediately stop, change pump leads to cable or line of any two-phase wiring device.
