Daily maintenance of diesel multistage centrifugal pumps is the key to ensuring their safety and operation. The following are some key points of daily maintenance:
1. Keep the equipment clean and dry
Cleaning: Clean the pump body, pipelines and accessories regularly to keep the outside of the equipment free of oil and dust.
Drying: Prevent water or moisture from entering the equipment and maintain a dry environment.
2. Check the operating conditions
Sound and vibration: Check the operating sound of the diesel multistage centrifugal pump every day to see if it is normal and whether there is abnormal vibration.
Leakage: Check whether there is leakage in the pump body, pipelines and seals. If there is leakage, it should be handled in time.
Oil level: Check whether the oil level in the suspension oil chamber is appropriate and keep it at 1/3 and 2/3 of the oil mark.
3. Regular lubrication and replacement
Lubricating oil: According to the requirements of the instruction manual, regularly replace the lubricating oil in the suspension oil chamber. Usually, the lubricating oil is replaced after 100 hours of operation within the month of the pump's operation, and then replaced every 500 hours of operation.
Bearing temperature: Check the bearing temperature frequently to ensure that it does not exceed the specified value (generally not more than 70℃~75℃).
4. Prevent idling and foreign matter from entering
Prevent idling: It is strictly forbidden for the centrifugal pump to work when the liquid in the pool (barrel) is emptied to avoid damaging the pump body.
Prevent foreign matter from entering: It is strictly forbidden to enter metal objects and flexible materials such as rubber, cotton yarn, plastic cloth, etc. into the centrifugal pump to avoid blocking the impeller flow channel or damaging the flow-through parts.
5. Regular inspection and maintenance
Concentricity: Regularly check the concentricity of the claw coupling to ensure smooth transmission.
Stuffing seal: For centrifugal pumps with packing seals, regularly check the leakage at the stuffing box and adjust the tightness of the packing gland to 10 to 20 drops per minute.
Sleeve and impeller: Regularly check the wear of the sleeve, and replace it in time if it is worn out. At the same time, check whether the impeller is worn, and replace or repair it if necessary.
6. Long-term out-of-use treatment
Rust-proof treatment: When the centrifugal pump is not used for a long time, the water pump should be disassembled, rust-proofed, reinstalled and properly stored.
Regular rotation: When the standby centrifugal pump installed in the production system does not operate for a long time, it should be rotated 1/4 turn every week to allow the pump shaft to evenly bear the static load and external vibration.
VII. Operation records and logs
Operation records: Record the operating time, flow rate, head and other parameters of the centrifugal pump to analyze the operating status of the equipment.
Equipment log: Write an equipment operation log to record the working time, maintenance status, maintenance personnel and other information of the equipment, which will help to find and solve problems in time.
VIII. Safety precautions
Shutdown maintenance: Before maintaining and repairing the multistage centrifugal pump, the equipment should be stopped and its power should be turned off.
Safety protection: During maintenance and repair, protective equipment such as protective glasses and gloves should be worn to ensure personal safety.
In summary, the daily maintenance of diesel multistage centrifugal pumps involves many aspects, including keeping the equipment clean and dry, checking the operating status, regular lubrication and replacement, preventing idling and foreign matter from entering, regular inspection and maintenance, long-term shutdown treatment, and operation records and logs. Only by doing these daily maintenance work well can the safety and operation of the centrifugal pump be ensured.
