Correct start gear pump steps

The correct start gear pump is very important, otherwise it will damage the pump, the following is some common sense before starting, please note: First, the pre-start preparation: 1. Test the motor steering is correct (with the pump marked on the direction), test The time is short so as not to cause the internal rotation of the pump on the wear parts due to dry lubrication without lubrication; 2. Open the exhaust valve so that the liquid filled the entire pump, to be closed after the exhaust valve; 3. Check the various parts are normal; 4 High temperature type should be preheated, the heating rate of 50 ℃ / hour, in order to ensure uniform heating of various components. Second, the start: 1. Close the pump outlet valve; 2. Fully open the inlet valve; 3. Start the motor to observe the pump is running properly; 4. Regulate the opening of the outlet valve to the required conditions, such as users at the pump outlet installed A 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 the user at the pump outlet is not installed flow meter or pressure gauge, you should adjust the outlet valve opening ; Measure the pump motor current, the motor running within the rated current, otherwise it will cause the pump overload operation (that is, high-current operation, so that the motor burned) 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 ≤ 80 ℃. Third, downtime: 1. Close the outlet pipe valve; 2. Cut off the power; 3. Close the inlet pipe valve; 4. If the pump is stopped for a long time, the liquid in the pump should be exhausted

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