Professional Operating Procedures for Centrifugal Pump Maintenance
Ensuring operational stability and equipment longevity in metallurgical facilities.
I. Pre-Operation and Startup Protocols
- 1. Pressure Verification: Ensure inlet pressure is greater than 1 bar (100kpa/0.1Mpa) before operation.
- 2. Power Check: Connect power and verify the motor rotation direction.
- 3. Valve Inspection: Check the status of all valves (inlet/outlet/bypass).
- 4. Filter Management: Open the bypass valve and slowly open the filter inlet valve.
II. Operational Monitoring
Continuous monitoring of mechanical components is vital to prevent failure. Adhere to the following temperature standards:
| Bearing Type | Allowable Temp Rise | Maximum Temp |
|---|---|---|
| Sliding Bearing | 45°C | 70°C |
| Rolling Bearing | 50°C | 80°C |
III. Maintenance and Lubrication Schedule
Lubrication: For new bearings with oil lubrication, replace oil after the first 1,000 hours (approx. 1.5 months), then every 6 months. For grease lubrication, replenish every 3-5 days.
Seal Inspection: Check the stuffing box for overheating. Normal flange leakage is 40-60 drops/min. Adjust or replace packing if abnormal.
IV. Critical Safety Rules
- Motor starts must not exceed 3 consecutive times.
- Stop immediately if smoke or fire is detected during startup.
- Idling (running without water) must not exceed 3 minutes.
- In freezing environments, drain standby pumps and pipes to prevent damage.