(1) during the operation of multistage pumps, the bearing temperature can not exceed the ambient temperature 35C, and the maximum temperature should not exceed 80C.
(two) add bearing lubricating oil to the bearing body, and observe that the oil level should be at the center line of the oil mark, and the lubricating oil should be replaced or supplemented in time.
(three) if it is found that the multi-stage pump has abnormal sound, it should be stopped immediately to check the cause.
(four) close the gate valve of the outlet pipe and the outlet pressure gauge and the imported vacuum meter.
(five) point the motor to see if the motor's steering is correct.
(six) periodic inspection of the wear of the multistage pump bushing, and should be replaced in time after the wear is large.
(seven) start the motor. When the multi-stage pump runs normally, turn on the outlet pressure gauge and the inlet vacuum pump when it displays normal pressure, then gradually open the gate valve, and check the load of the motor at the same time.
(eight) check the multi-stage pump pipeline and the joint place has no loose phenomenon. The multistage pump is rotated with the hand to see if the multistage pump is flexible.
(nine) the drain plug unscrew the pump body, filling water (or lead paste).
(ten) to stop the use of multilevel pumps, shut down gate valves, pressure gauges, and then stop the motor.
(eleven) the multi-stage pump in the first month of work, after 100 hours to replace the lubricating oil, after each 500 hours, oil change once.
(twelve) the multistage pump regularly adjusts the packing gland to ensure that the drip leakage in the packing room is normal (suitable for dropping out).
(thirteen) multi-stage pump for a long time stop, the need to remove all of the pump, dry water, the rotating parts and the combination of oil to be coated.
(fourteen) the multi-stage pump used in the winter season, after stopping the pump body, lower drain plug unscrew medium on the net. To prevent cracking.
(fifteen) try to control the flow and lift of the multistage pump in the range specified in the sign, so as to ensure the operation of the multistage pump at the highest efficiency point, so that the maximum energy saving effect can be obtained.
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