Haitan pump submersible pump safe and efficient use of five points Haitan pump submersible pump safe and efficient use of five points 1. When purchasing submersible pump should pay attention to its model, flow and head, such as the use of inappropriate specifications, will not be able to get enough water, can not play unit efficiency. In addition, we should also clarify the direction of rotation of the motor, some types of submersible pump forward and reverse can be water, but reverse the small amount of water, current, reverse will damage the motor windings. To prevent submersible pump leakage in the water when working under the accident caused by electric shock, leakage protection switch should be installed. 2. When installing submersible pump, the cable should be overhead, the power cord should not be too long Do not force the cable when the unit is launching, so as to avoid causing the power cord to break. Submersible pumps do not sink into the mud during work, otherwise it will lead to bad cooling and burn motor windings. Installation, the insulation resistance of the motor should not be less than 0.5 megohms; 13 kW motor can be started directly below 13 kilowatts should be used to start the compensator. 3. Try to avoid starting the low-voltage power supply voltage and rated voltage can not be a difference of 10%, the voltage is too high will cause the motor overheating and burn the winding, the voltage is too low, the motor speed drops, if less than 70% of rated speed, start the centrifugal switch Will be closed, resulting in a long time to start the winding energized and even burn the windings and capacitors. Do not switch the motor on and off frequently. This is because the pump will run back when it stops. If it is turned on immediately, the motor will start to load, causing the starting current to be too large to burn the winding. 4. Do not idle and overload operation Do not allow the pump long-term overload operation, do not pumping large amounts of water, dehydration pump operation time should not be too long, so as not to overheat and burn the motor. During the operation of the unit, the operator must keep an eye on whether the working voltage and current are within the values ​​specified on the nameplate. If not, the motor should be stopped to find out the cause and solve the problem. 5. Inspection usually peacetime inspection motor, found under the crack, rubber seal ring damage or failure, etc., should be promptly replaced or repaired to prevent water penetration into the machine.
