Matters needing attention in the use of multi-stage pump
1: Check the multi-stage pump piping and joints for looseness.
Turn the multi-stage pump by hand to see if it is flexible.
2: Add bearing lubricating engine oil to the bearing body, observe the oil level should be at the center line of the oil standard, and the lubricant should be replaced or supplemented in time.
3: Unscrew the water diversion plug of the pump body of the multi-stage pump, and pour water (or slurry).
4: Close the gate valve, outlet pressure gauge and inlet vacuum gauge of the outlet pipe.
5: Jog the motor to see if the motor turns correctly.
6: The multi-stage pump is out of service for a long time. It is necessary to disassemble the pump completely, wipe off the water, and apply grease to the rotating parts and joints.
7: Try to control the flow and head of the multi-stage pump within the range indicated on the label to ensure that the multi-stage pump operates at the highest efficiency point to obtain the maximum energy saving effect.
8: During the operation of the multi-stage pump, the bearing temperature must not exceed the ambient temperature of 35C, and the maximum temperature must not exceed 80C.
9: If abnormal sound of multi-stage pump is found, stop immediately and check the cause.
10: When the multi-stage pump is to be stopped, first close the gate valve and pressure gauge, then stop the motor.
11: In the first month of operation, the multi-stage pump changes the lubricating oil after 100 hours, and changes the oil once every 500 hours thereafter.
12: The multi-stage pump often adjusts the packing gland to ensure that the drip in the packing chamber is normal (it is better to make the drip out).
13: Regularly check the wear of the multi-stage pump sleeve, and replace it in time after the wear is large.
14: When the multi-stage pump is used in the cold winter season, after stopping, the water drain plug at the bottom of the pump body needs to be unscrewed to release the medium. Prevent frost cracking.
15: Start the motor. When the multi-stage pump runs normally, open the outlet pressure gauge and the inlet vacuum pump to see that it shows the appropriate pressure, and then gradually open the gate valve, and at the same time check the motor load.
