Correct use of the pump method: normal pump start-up steps:
First, before the start of preparation:
1. Test motor steering is correct, from the top of the motor to the pump as a clockwise rotation, the test time to be short so as to avoid mechanical seal dry wear.
2. Open the vent valve to fill the entire body of fluid and close the vent valve when full.
3. Check the various parts are normal.
4. Hand pump pump so that the lubricating liquid into the mechanical seal face.
5. High temperature type should be run preheating, heating rate of 50. C / hour, in order to ensure uniform heating ministries.
Second, start:
1. Fully open the inlet valve.
2. Turn off the discharge line valve.
3. Start the motor and observe if the pump is running correctly.
4. Adjust the outlet valve opening to the required conditions, such as users at the pump outlet equipped with flow meter or pressure gauge, the outlet valve should be adjusted by the opening of the pump performance parameters listed in the rated point on the operation, such as users In the pump outlet is not installed flow meter or pressure gauge, the outlet valve should be adjusted by opening; measuring pump motor current, the motor running within the rated current, otherwise it will cause the pump to overload operation (ie, high-current operation, Motor burnout) is good to adjust the outlet valve open large and small and pipeline conditions.
5. Check the seal leakage, the normal mechanical seal leakage should be less than 3 drops / min.
6. Check the motor, bearing temperature rise ≤ 70. C.
Third, parking:
1. High temperature type first cooling, cooling rate ≤ 10. C / min, the temperature is reduced to ≤ 80. C or less before parking.
2. Turn off the discharge line valve.
3. Stop the motor.
4. Close the import and export valves.
5. If the long-term parking should be depleted pump fluid.
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