Cast iron submersible sewage pump For Construction sewage , Commercial Sewage Pump

Cast iron submersible sewage pump For Construction sewage , Commercial Sewage Pump

QW type submersible non-clogging sewage pump installation, operation and maintenance:

• When installing and handling the pump, it is strictly forbidden to make the cable, so as not to cause the cable inside break, the connector is off-line, etc. The pump can not run normally, even burn the motor;
• Make sure that the grounding cable of the pump cable is properly grounded. When the pump is working, it is strictly forbidden to close the working area or touch the pump. In order to reduce the risk of electric shock, it can only be connected to the appropriate grounding socket.
• Do not overload operation;
• The cable used with the pump can not be less than 1.2 times the area of the pump cable;
• When installed, the pump must be fastened, but can not make the cable force, or with the pump start and stop when a rotation;
• run-time found that the pump is not water, you should check whether the pump is reversed, or pump outlet at the check valve inside the air is not drained;
• Regular inspection of the pump motor phase or relative between the insulation resistance, the value should not be less than 2MΩ, or should be disassembled;
• Electric pump in the specified working conditions, the normal operation after six months, should check the oil chamber sealing situation, such as oil in the oil is emulsified or water precipitation, should be replaced 10 # oil and mechanical seals;
• After a year of normal operation of the pump, it should be overhauled, replace the wear parts that have been worn and check the status of the fasteners. At the same time, replace the grease to ensure that the pump is well lubricated during operation.
• If the pump is not in use, please clean it and dry it.

QW (WQ) type submersible non-clogging sewage pump repair and maintenance:

1. The pump should be hand management use and regularly check the pump winding and the insulation resistance between the chassis is normal.
2. Each time, especially for thicker and thicker slurry, the pump should be placed in the water for several minutes to prevent the sediments left to ensure that the pump clean.
3. If the pump is not used for a long time, the pump should be removed from the water, do not immerse in water for a long time to reduce the motor stator windings damp the opportunity to increase the life of the pump.
4. In the conventional state of each pump after the use of 3 00 ~ 500 hours after the filling or replacement of oil in the oil tank (10 ~ 30 oil), so that the mechanical seal to maintain a good lubrication state, improve the mechanical seal life.
5. After the pump is removed and repaired, the cabinet assembly must be inspected by 0.2MPa airtight test to ensure that the motor is sealed and reliable.
6. The seal ring between the impeller and the pump body has a sealing function, such as sealing damage will directly affect the pump performance, if necessary, should be replaced.

QW type submersible non-clogging sewage pump structure diagram:

1. power cable
2. motor connection
3. junction box
4. motor cover
5. bearing
6. upper shaft seat
7. motor housing
8. stator
9. shaft (rotor)
10. bearing
11. oil and water probe
12. oil chamber
13. Mechanical seal
14. rear cover
15. pump body
16. impeller bolts
17. impeller
18. seal ring
19. chassis