Places that must be paid attention to when using stainless steel corrosion-resistant centrifugal pumps
Attention! Please operate the stainless steel corrosion-resistant centrifugal pump strictly according to the following requirements, otherwise it will cause damage to the stainless steel corrosion-resistant centrifugal pump.
Places that must be paid attention to when using stainless steel corrosion-resistant centrifugal pumps
stainless steel corrosion-resistant centrifugal pump use attention:
1 Check before starting
Before starting the pump, check whether the stainless steel corrosion-resistant centrifugal pump is abnormal (whether it rotates flexibly, whether there is abnormal noise, whether the lubricating oil in the bearing seat is in place, whether the motor rotation direction is correct, etc.).
2 Open the valve before driving
When driving, first open the inlet valve to allow liquid to flow into the pump cavity (the low-level pool should be manually filled with the pump), turn on the cooling water at the sealing part, then turn on the power to start the water pump, and finally slowly open the outlet valve to adjust to appropriate flow and head parameters.
Note: When the outlet valve is fully closed, the pump should not be opened for more than ten minutes; starting the pump with the outlet valve fully open will cause the motor to overcurrent (overload) during startup.
3 Strict anti-aircraft operation during operation
When the pump is running, it is necessary to strictly prevent the lack of liquid in the pump cavity (such as the liquid in the tank has been evacuated, the inlet pipe is blocked, the low-level tank cannot be sucked, etc.), and the dry operation shall not exceed 3 minutes when the cooling water is connected, otherwise it will Burn the internal parts of the pump.
Note: The dry running of the stainless steel corrosion-resistant centrifugal pump will cause the temperature in the pump to rise. It is strictly forbidden to continue to use it, otherwise the heated ceramic sleeve will crack due to the sudden change of cold and heat in the cold liquid! It should be after the pump and the seal are cooled reuse.
4 Prevent water interruption during operation
The cooling water should be prevented from being interrupted during pump operation. If the sealing part has heated up, do not turn on the cooling water again at this time, otherwise the shaft sleeve may be cracked due to the same reason as the above! It should be used after the seal has cooled.
5 Close the valve before stopping
When stopping, close the outlet valve first, then turn off the power, and finally close the inlet valve and seal the cooling water.
Note: If the pump is stopped and the outlet valve is not closed first, and the outlet pipeline has no check valve, the water hammer caused by the backflow of the liquid in the outlet pipeline may impact the pump impeller, causing it to reverse and cause the lock nut to loosen. And eventually cause damage to other parts of the pump.
6 Prevent precipitation
For working conditions with high solid content, clean water should be used to flush the pipeline and pump cavity before stopping the pump to prevent clogging caused by sediment, which may cause damage to the pump when the pump is started next time.
7 Low-position siphon bucket
For low-level tank conditions, a siphon barrel (one pump, one barrel) should be used in front of the pump, and the bottom valve cannot be used (the bottom valve may fail due to particulate matter jamming the flap). When the pump is started, ensure that the vertical distance between the liquid level in the pool and the pump inlet does not exceed 2m (recommended within 1m, the shorter the better), otherwise it may not be able to suck up and cause premature damage to the pump seal.
