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 gear pump before the start of preparation: 1. Test motor steering is correct (with the pump body marked on the direction) , The test 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, heating rate of 50 ℃ / hour, to ensure uniform heating of various components. Second, the gear pump 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 desired conditions, such as users at the pump outlet Department equipped with a flow meter or pressure gauge, the valve should be adjusted by the opening degree 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 should be adjusted by the outlet valve Opening; measure the pump motor current, the motor runs within the rated current, otherwise it will cause the pump overload operation (ie, high current operation, to the motor burnout) Adjust the outlet valve to open a large and small and pipeline conditions Related; 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, the gear pump downtime: 1. Close the outlet pipe valve; 2. Cut off the power; 3. Close the inlet pipe valve; 4. If the long-term stop gear pump, the pump liquid should be drained
Strip/Rectangle Shape Glass Mosaics
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