QB60 Water Pump Manufacturers Introduce The Inspection Work Before Starting The Pump

In order to ensure the safe operation of the pump, the pump should be thoroughly and carefully inspected before the pump is started, especially for the newly installed or unused pump for a long time. Below, QB60 Water Pump Manufacturers introduces the inspection work before the pump starts:

① Check whether the anchor screws of the water pump and the power machine and the connecting bolts of various parts are loose or fall off, and if necessary, they should be tightened or replaced.

②Turn the coupling or pulley to check whether the impeller rotates flexibly, whether there is any abnormal sound in the pump, and judge whether the steering is correct. For a newly installed water pump, it is essential to check its steering when it is started for the first time. For centrifugal pumps directly connected to the motor, check whether the direction of the pump is consistent with the arrow on the direction plate on the pump. If they are inconsistent, just swap any two wires of the motor. If there is no steering arrow on the pump, the pump casing is a volute type, which can be judged according to the shape of the pump, that is, the direction of rotation of the pump is consistent with the direction of the volute from small to large; for a pump that is not a volute type, then It can only be judged from the shape of the blades, that is, the pump should rotate in the direction of the bending of the blades. For a centrifugal pump driven by a diesel engine, it can be judged directly according to the mutual position between the diesel engine and the water pump and the rotation mode used. Because the steering of the diesel engine is fixed in the counterclockwise direction from the power output end. If the steering is wrong, the transmission mode or the installation position of the diesel engine must be changed.

③ Check whether the tightness of the packing gland is appropriate.

④ Check the bearing lubrication, whether the lubricating oil is sufficient and clean, and whether the oil quantity meets the specified requirements.

⑤ Remove the debris (blockage and floating objects) at the water inlet of the centrifugal pump to prevent the debris from being sucked into the pump after starting the pump and damaging the impeller.

⑥ Check the protection and safety work and remove the tools and other objects on the unit before starting, so as not to be shaken or cause unnecessary losses after starting.

⑦Add water to the centrifugal pump until the air release plug on the pump body emits water.

⑧ Before starting the centrifugal pump, the gate valve on the outlet pipe should be closed first. Because the shaft power of the centrifugal pump is the smallest when the flow is zero, the load and resistance torque of the unit will be greatly reduced, which is convenient for a smooth start. Otherwise, it may make it difficult to start the unit and even cause an accident.