When the O-ring of the multistage pump is damaged or aged, it needs to be replaced in time to ensure the normal operation and sealing effect of the pump. The following is a multistage pump manufacturer Changsha Zoomlian pump industry after-sales engineer summarized for you about the general steps of multistage pump replacement O-ring:
1、 stop the operation of the pump: before any repair or replacement work, the pump must first stop the operation and cut off the power supply to ensure the safety of the working environment.
2、discharge pressure and liquid: by closing the import and export valves or other control devices, remove the pressure and liquid inside the pump. This can be done by opening the pump's exhaust valve, blow-off valve, or discharge valve, ensuring that there is no hydraulic pressure in the pump chamber.
3、disassemble the pump body and sealing parts: according to the specific multistage pump structure, disassemble the pump body and sealing parts. It is usually necessary to remove the front or back cover of the pump in order to access the location of the seal.
4、Remove the old O-ring: carefully remove the old O-ring from the sealing slot or sealing seat. An appropriate tool (such as a seal puller) or a flat-head screwdriver can be used to assist in removal.
5、clean and inspect the sealing groove: Before installing the new O-ring seal, ensure that the sealing groove is clean and check for any accumulation or damage. Clean the sealing tank with cleaner and soft cloth.
6、Install the new O-ring: Carefully place the new O-ring into the sealing slot or seat, ensuring that it is fully embedded and smoothly installed in place.
7、Assemble the sealing parts and pump body: reassemble the pump body and sealing parts to ensure that the sealing ring is correctly installed and maintained in a good position. If needed, a lubricant or sealant can be used to help with installation.
8、inspection and testing: After reassembling the pump, ensure that all parts are correctly installed, and carry out the necessary inspection and testing. Ensure that all functions of the pump are normal, and check that the seal ring is in good working condition.
9、restart the pump: if everything is normal, you can restart the pump, and through observation and monitoring to ensure the effective sealing of the new O-ring and the normal operation of the pump.
Please note that the above steps are for reference only, and the specific steps may vary depending on the multistage pump model and manufacturer. When replacing O-rings, refer to the appropriate pump service manual or consult the pump manufacturer for accurate instructions.