Comprehensive Operational Guidelines and Maintenance Procedures for Water Pumps

Comprehensive Operational Guidelines and Maintenance Procedures for Water Pumps

Summary

Essential technical instructions for pump startup, operation, and maintenance to ensure operational safety and maximize equipment lifespan.

Operation and Maintenance

1. Pump Start Frequency
The pump should not be started too frequently. Follow the guidelines below based on motor power:
Motor Power
Maximum Starts Per Hour
≤ 4 kW
100 starts
> 4 kW
20 starts
If the pump is found to be starting too frequently, the control equipment must be adjusted to reduce the start/stop frequency. In such cases, it is also necessary to inspect the installation conditions.
2. Operating Range
The use of the pump should refer to the performance range indicated by the bold curve in the technical documentation. This is to prevent issues such as:
● Overheating caused by excessively low flow rates.
● Motor overloading caused by excessively high flow rates.
3. Maintenance Guidance
Pumps installed according to the instructions in this manual will operate effectively with minimal maintenance:
● Mechanical Seal: The mechanical seal is self-adjusting. The contact surfaces of the stationary and rotating seal rings are lubricated and cooled by the liquid being pumped.
● Motor Disassembly: For pumps equipped with higher-power motors, the mechanical seal can be replaced without removing the motor.
● Bearings: The internal sliding bearings of the pump are lubricated by the liquid being pumped.
4. Frost Protection
The pump can be used in systems where anti-freeze measures have been implemented.
● Freezing Environments: If the pump is installed in a location prone to freezing, an appropriate amount of anti-freeze must be added to prevent the liquid from freezing and damaging the pump.
● Idle Pumps: If anti-freeze is not used and there is a risk of frost, the pump must be shut down. When the pump is out of service, all water in the pump and the system must be drained.
5. Periodic Inspection Checklist
The following items should be inspected at regular intervals:
● The pump's working and operating pressure.
● Potential leakage points.
● Potential overheating of the motor.
● Removal and cleaning (or replacement) of all strainers/filters.
● The trip time for motor overload protection.
● The frequency of starts and stops, along with all control operations.

Note: If any faults are discovered, inspect the system according to the "Common Faults and Troubleshooting" section.
6. Long-term Shutdown
If the pump is to be out of service for a long period, it should be cleaned thoroughly and stored properly.
7. Storage Protection
During storage, the pump must be protected against corrosion and physical damage.