Maintenance Of Clear Water Centrifugal Pumps

(1) Check the piping and connections of the clear water centrifugal pump for any looseness. Rotate the pump by hand to ensure it turns freely.
(2) Add lubricating oil to the bearing housing, ensuring the oil level aligns with the centerline of the oil gauge; replenish or replace the oil in a timely manner.
(3) Unscrew the priming plug on the pump casing and fill the pump with priming liquid.
(4) Close the gate valve on the discharge pipeline and the discharge pressure gauge valve.
(5) Jog the motor to verify the correct direction of rotation.
(6) Start the motor. Once the pump is running normally, open the discharge pressure gauge valve to check for appropriate pressure, then gradually open the gate valve while monitoring the motor load.
(7) Maintain the pump's flow rate and head within the ranges specified on the nameplate to ensure operation at the point of maximum efficiency and achieve optimal energy savings.
(8) During operation, the bearing temperature rise should not exceed 35°C above ambient temperature, and the absolute maximum temperature must not exceed 80°C.
(9) If any abnormal noise is detected, stop the pump immediately to investigate the cause.
(10) When shutting down the pump, first close the gate valve and the pressure gauge valve, then stop the motor.
(11) During the first month of operation, change the lubricating oil after 100 hours of service; thereafter, change the oil every 500 hours.
(12) Regularly adjust the packing gland to ensure proper leakage (dripping) from the stuffing box.
(13) Periodically inspect the shaft sleeve for wear and replace it promptly if significant wear occurs.
(14) When using the pump in cold winter weather, unscrew the drain plug at the bottom of the casing after shutdown to completely drain the fluid and prevent freezing damage.
(15) For long-term storage, disassemble the pump completely, wipe away all moisture, apply grease to rotating parts and mating surfaces, reassemble, and store properly.