Hot oil pump start-up and switching steps of the pump: a) check the appearance of the pump, motor parts are complete, non-destructive; b) a good car, add good oil, cooling water, base cooling water; c) Leading to the pump and dehydration, preheating the pump in advance; d) fully open the inlet valve, the outlet valve, open the exhaust valve so that the liquid filled pump; e) start the motor, check the motor temperature, bearing temperature, vibration, No leakage; f) When the pump outlet pressure reaches the rated value, should gradually open the outlet valve, until the operation is normal, hot oil pump should be immediately after normal operation into the oil seal; g) Before starting the standby pump should be fully inspected and started before Of the preparations, the hot oil pump should be fully preheated; h) open the pump inlet valve, full close the outlet valve, so that the pump body is full of media, the exhaust valve will be the full discharge of gas; i) start the motor, check the various parts of the operation, Operation is normal, the current is stable, gradually open spare pump outlet valve, gradually shut down the hot oil pump outlet valve