The maintenance techniques for chemical pumps are as follows:
1. Check whether the pipelines and joints of the chemical pump are loose. Rotate the chemical pump by hand and test if it is soft.
2. Remove the water intake plug of the chemical pump body and inject water (or slurry).
3. When abnormal noise is detected in the chemical pump, it should be stopped immediately to check the cause.
4. Effectively close the gate valve, outlet pressure gauge, and inlet vacuum gauge of the water outlet pipeline.
5. Move the motor and try to check if the direction of the motor is correct.
6. After starting the motor and the chemical pump working normally, turn on the outlet pressure gauge and the inlet vacuum pump, display the appropriate pressure, slowly open the gate valve, and check the load condition of the motor.
7. The flow rate and head of the chemical pump should be controlled within the range indicated on the nameplate as much as possible.
8. During the operation of chemical pumps, the bearing temperature shall not exceed 35 degrees Celsius of the ambient temperature, and the temperature shall not exceed 80 degrees Celsius.
9. Add bearing lubricating oil into the bearing body and observe the oil level, which must be located at the centerline of the oil level. Lubricating oil should be replaced or replenished in a timely manner.
10. When stopping the use of the chemical pump, please close the gate valve and pressure gauge before stopping the motor.
11. During one month of operation, the chemical pump needs to replace the lubricating oil every 100 hours, and then replace the oil every 500 hours.
12. Regularly adjust the sealing pressure plate to ensure that the dripping condition inside the sealing chamber is normal.
13. Regularly check the wear of the sleeve and replace it promptly if there is significant wear.
14. When using chemical industry pumps in winter, after parking, the drain plug at the lower part of the pump body must be loosened to clean the medium. Prevent frostbite.
15. The chemical pump has been out of service for a long time and needs to be completely disassembled, wiped off of moisture, and installed with grease applied to the rotating and joint parts, and properly stored.