1. Reciprocating pump, gear pump, screw pump, such as the volume of the pump before the start, you must first open inlet and outlet valves.
2. The centrifugal pump at startup, should open the entrance valve, close the outlet valve, start the motor power will not be too high; the outlet pressure stability, immediately slowly open the outlet valve, adjust the required flow and head. When closing the outlet valve, the pump running time should not be too long, otherwise the liquid will be due to the impeller agitation and temperature rise.
3. With the chemical medium test run, the pump filling, replacement, exhaust and other requirements should be in accordance with the provisions of the technical documentation.
4. Which allows taking water as the medium trial operation of the pump, water should be tested for the safety of transportation of petroleum products in the pump, the pump cavity and connected to the working medium for bearing and lubricant, should be based on the medium run.
5. The pump must be under rated load for the single machine trial run without load (4h; reciprocating pump outlet valve fully open) commissioning shall be not less than 15min; after normal working pressure in 1/4, 1/2, 3/4 under the condition of piecewise running test; each operation time shall be not less than 0.5 h at work; under the pressure of continuous operation of more than 4H; in the first stage pressure test run not qualified, should not be a level after pressure test.
6. The metering pump should flow meter; metering pump flow can be adjusted, and the adjusting mechanism must be flexible and accurate action; the metering pump can be adjusted continuously flow, should be respectively in the flow indicating the rated flow rate of 1/4, 1/2, 3/4 and the rated flow and determine the actual flow.
7. High temperature pump operation should be carried out before preheating in test, temperature difference between the surface of the pump body and a working medium inlet process pipeline should be not greater than 40 DEG C; the pump body heating, temperature rise should be uniform, not greater than 50 DEG C liters per hour temperature; preheating process, every 10min turning semi circle; the temperature above 150 DEG C when every 5min turning semi circle; axial sliding frame check pump end bolt expansion gap; open the entrance valve and vent valve within the pump discharge gas, preheated to the required temperature and then close the vent valve; commissioning should stop, every 20~30 min turning half circle, until the pump body temperature to 50 degrees centigrade.
8. Low temperature pump to test run under the condition of low temperature, open the bypass pipe before pre cooling, according to pipe and pump cavity dehumidification process requirements; then, all open vent valve pump pre cooling, cooling speed per hour shall not be greater than 30 DEG C; reach the prescribed temperature after pre cooling, the vent valve is closed the test run of the pump.
9. Steam pump cylinder in the test before operation, the application of steam to warm cylinder, and timely discharge condensate water; stop, should be put in the condenser water in the cylinder, and in accordance with the provisions of the antifreeze insulation.
10. Brittle materials (ferrosilicon, ceramics) manufacturing pumps in operation should be to prevent the cold or cold and heat, there are more than 50 DEG C temperature difference between hot and cold mutation is not allowed.
