What conditions should be met for a trial run of a water pump?

This post was last edited by dongjiang1001 on 2011-9-16 17:30 1. The motor has been tested for 2 hours and passed the test； 2. There is a liquid level in the pump inlet tank ； 3. The pump runs in the correct direction ； 4. There is a return line at the outlet of the pump ； 5. The inlet filter of the pump has been installed ； 6. Electrical qualifications ； 7. Auxiliary equipment with circulating water is put into use.

Reply 1# dongjiang1001 1 The water pump system and its test-related equipment, valves and pipelines have been installed in accordance with the requirements of the manufacturer and design drawings, and have passed quality inspection and supervision acceptance. The installation technical records and visa procedures are complete. 2 The water pump motor has passed the single test rotation, the rotation direction is correct, and it has passed the acceptance inspection. 3. The test area around the water pump is flat, with sufficient lighting, normal communications, and smooth roads. 4. The water pump instruments, thermal signals, and interlock switches have been inspected, and the relevant interlock protection has passed the test (the pump-valve interlock test has passed). 5. Each valve unit of the water pump has passed the trial operation and debugging. 6. The water pressure test of the system to which the water pump belongs has passed the test, and the relevant valves have been calibrated, the switches are flexible, the direction is correct, and they have been numbered and listed. 7 The personnel participating in the trial transfer have clearly defined their division of labor and responsibilities.

1. Trial operation of electric motor: Remove the coupling between the motor and the unit, and then energize the motor alone for trial operation. Inspections during the trial operation of the motor should meet the following requirements: a. The rotation direction of the motor meets the requirements. If it runs in the reverse direction, it should be stopped quickly to adjust the phase. ； b. The commutator, collector ring and brushes are working normally ； Record the no-load current of the motor ； c. Check the temperature of each part of the motor. The sliding bearing temperature should not exceed 80°C, and the rolling bearing temperature should not exceed 95°C.℃ ； d. The motor operates without noise or obvious vibration. 2. Trial operation without load: After the test run of the motor is completed, reconnect the coupling between the motor and the pump body, and use water as the working medium to test the centrifugal pump under the lowest load. Inspections during no-load trial operation should meet the following requirements: a. Before starting, the car should be manually turned and checked. The entire rotation process should be smooth and without jamming. ； b. The centrifugal pump should be started and tested at the lowest flow rate (outlet valve closed) ； c. Centrifugal pumps that require machine seal cooling water should turn on the machine seal cooling water. ； d. Once abnormal vibration, sound, leakage or other faults are found in the centrifugal pump during no-load trial operation, the operation should be stopped, the fault should be inspected and repaired, and the second trial run should be carried out after the fault is eliminated. e. The no-load trial operation time is generally 15 minutes. 2. Trial operation with load: After the no-load trial operation is completed, the centrifugal pump will be transferred to the load trial operation when conditions permit.

1. Trial operation of electric motor: Remove the coupling between the motor and the unit, and then energize the motor alone for trial operation. Inspections during the trial operation of the motor should meet the following requirements: a. The rotation direction of the motor meets the requirements. If it runs in the reverse direction, it should be stopped quickly to adjust the phase. ； b. The commutator, collector ring and brushes are working normally ； Record the no-load current of the motor ； c. Check the temperature of each part of the motor. The sliding bearing temperature should not exceed 80°C, and the rolling bearing temperature should not exceed 95°C.℃ ； d. The motor operates without noise or obvious vibration. 2. Trial operation without load: After the test run of the motor is completed, reconnect the coupling between the motor and the pump body, and use water as the working medium to test the centrifugal pump under the lowest load. Inspections during no-load trial operation should meet the following requirements: a. Before starting, the car should be manually turned and checked. The entire rotation process should be smooth and without jamming. ； b. The centrifugal pump should be started and tested at the lowest flow rate (outlet valve closed) ； c. Centrifugal pumps that require machine seal cooling water should turn on the machine seal cooling water. ； d. Once abnormal vibration, sound, leakage or other faults are found in the centrifugal pump during no-load trial operation, the operation should be stopped, the fault should be inspected and repaired, and the second trial run should be carried out after the fault is eliminated. e. The no-load trial operation time is generally 15 minutes. 3. Trial operation with load: After the no-load trial operation is completed, the centrifugal pump will be transferred to the load trial operation when conditions permit.