The daily maintenance of the special pump for the fountain is the guarantee for the safety of the unit and the normal operation of the fountain. Therefore, it is planned maintenance to eliminate and prevent accidents during the operation of the unit.
Daily maintenance methods/steps of fountain special pump:
(1) Check and deal with bolts or nuts that are easy to loosen. Such as flaps, bolts, shaft pins, pins, etc., the tightness of the packing of the shaft seal device of the double suction centrifugal pump, the valve plate of the air compressor, etc.
(2) Oil, water and gas pipeline joints and valve leakage treatment.
(3) Inspection and treatment of motor carbon brushes, slip rings, insulation, etc.
(4) Check whether there are any water-blocking debris before the trash rack.
(5) Keep the motor dry and check the motor insulation.
(6) Check whether the lifting point of the gate is firm, and whether there is any obstruction, corrosion and wear on the side of the gate.
(7) Maintenance of gate opening and closing equipment.
(8) Crane maintenance.
(9) Clean the unit equipment.
The special pump for fountain needs to carry out comprehensive maintenance on the submersible electric pump and its control system on a regular basis, and do a comprehensive preventive maintenance at least once a year. The contents include: whether the vibration sound, voltage and current are abnormal when starting, whether the starting device is working normally, and excessive temperature Whether there is an alarm for water leakage, whether the multiple protections established by the meter control operate frequently, whether the main cable and control cable are aging and cracking, whether the main contactor is sticky, oxidized or burr, whether the thermal relay is set correctly, whether the winding insulation layer has signs of aging, and whether the Whether the ground insulation resistance is too low, whether the three-phase winding resistance is balanced, whether the stator and rotor have swept or scratches, whether the liquid level gauge of the control system is accurate, whether the upper and lower limit outputs are normal and reliable, whether the floating ball action is reliable, and whether the temperature detection element is Aging and misoperation, whether the oil is emulsified, whether the mechanical seal is in good condition, whether the bearing is worn, whether the impeller is worn or cavitated, whether the shaft is rusted, deformed or worn, whether the fastening screws inside and outside the motor are loose, whether the cooling jacket and circulation Whether there is debris in the water pipe, whether there is sediment deposition or blockage in the pump Ll and its surroundings.
In the process of preventive maintenance and submersible pump operation, the over-temperature alarm should be correctly distinguished, whether the alarm is a real over-temperature or a malfunction due to the aging of the components. If the components are aging, you only need to connect their signals to the alarm signal, and do not let them directly participate in the control, so as to reduce the frequent starting of the submersible pump.
