Pump regular maintenance procedures
1.0 Purpose
The purpose of this document is to ensure that all pumps are maintained in good running or standby condition, guaranteeing their reliability and efficiency for emergency or daily use.
2.0 Scope of Application
This procedure applies to all buildings equipped with life support pumps, fire pumps, spray pumps, booster pumps, sewage pumps, and air conditioning pumps.
3.0 Responsibilities
The management office is responsible for the regular maintenance and inspection of all pumps to ensure they remain operational at all times.
4.0 Maintenance Content
4.1 Daily life pumps and air conditioning pumps should undergo routine inspection and maintenance once a week, and comprehensive maintenance every six months.
4.2 Fire pumps and spray pumps should be tested monthly, while booster pumps should be tested in February. Each test run should last 10–15 minutes. During the fire pump test, the jet range from the fire hydrant outlet must be at least 6 meters. A full maintenance should be conducted every six months.
4.3 Sewage pumps and submersible pumps require comprehensive maintenance every six months.
4.4 When performing pump maintenance, it is necessary to inspect and maintain the valve, pressure gauge, piping, and other components within 2 meters of the pump body simultaneously.
4.5 Pump Body Care
4.5.1 Inspect the pump body for integrity, ensuring the nameplate is clear, the water flow direction is marked, and the appearance is clean and well-painted.
4.5.2 Check the lubricating oil; if discolored or contaminated, replace it immediately.
4.5.3 Inspect the packing seal. If there is leakage, add or replace the asbestos rope filler.
4.5.4 Replace coupling bolts and rubber pads if damaged.
4.5.5 Tighten the base screws and apply anti-corrosion treatment.
4.5.6 Life pumps and air conditioning pumps, due to frequent operation, should have both ends of the shaft bearings cleaned or replaced annually.
4.6 Motor Maintenance
4.6.1 Inspect the motor's exterior to ensure it is neat, the nameplate is intact, and the grounding wire is properly connected.
4.6.2 Disassemble the wiring terminals in the junction box and use a 500V megohmmeter to measure the insulation resistance between phases. The resistance should not be less than 0.5 megohms.
4.6.3 Ensure the three-phase wires and connectors in the terminal box are securely fastened.
4.7 Valve, Pipe, and Accessory Maintenance
4.7.1 All valves should operate smoothly and be leak-free internally and externally.
4.7.2 Check the valve action for flexibility and ensure no internal or external leaks.
4.7.3 The pressure gauge should indicate accurately with a clear dial.
4.7.4 Pipes and accessories should appear neat, without cracks, and have intact paint.
4.7.5 Verify the correct pump rotation direction. If incorrect, adjust accordingly.
4.8 Control Cabinet Maintenance
4.8.1 Disconnect the main power supply and check the transfer switch, start, and stop buttons for smooth and reliable operation.
4.8.2 Inspect electrical components such as circuit breakers, contactors, and relays. Tighten any loose connections.
4.8.3 Clean the control cabinet inside and out to remove dust and debris.
4.8.4 Reconnect the main power and verify that the power indicator is functioning normally.
4.9 After completing the maintenance, start the pump and observe the ammeter and indicator lights to ensure normal operation.
4.10 Monitor the pump during operation to ensure it runs smoothly, without excessive vibration or noise. Check that the pressure gauge shows normal readings and that the control cabinet has no abnormal sounds.
5.0 Main Pump Maintenance Projects
5.1 SB Single Suction Centrifugal Pump Maintenance Projects and Requirements
Maintenance Project | Operation Requirements and Technical Specifications
1. Check the stuffing box: The pump uses a stuffing box seal. The packing should be elastic, not too tight or too loose. Normally, the leakage should be around 60 drops per minute. If the drip is too heavy or the water splashes around, it is not normal.
2. Check the mechanical seal: The mechanical seal should not run dry. It can only move momentarily during debugging. In normal operation, a small amount of dripping from the retaining ring is acceptable. If the leakage increases, check the friction rings and repair or replace the mechanical seal. Under normal conditions, the service life is about 8000 hours, so replacement is usually not needed unless the dynamic and static rings are damaged.
3. Lubricate the bearings: The pump uses imported SKF series semi-enclosed bearings, which come pre-filled with high-temperature grease and can run continuously for 2 years. One annual grease addition is required.
4. Check and clean the impeller: Foreign objects may cause damage or blockage. If necessary, remove the bearing housing and tail cover, pull out the rear shaft and impeller, and clean the pump body and inlet/outlet nozzles without dismantling them.
5. Check wearing parts: Key wear items include flexible couplings, mechanical seals, static and dynamic rings, O-rings, bearings, impeller nuts, and packing plates. These should be inspected carefully, and any damaged parts should be replaced promptly.
FZH Bin Blender is mainly used for blending granules and granules, powder and powder, granules and powder in solid dosage production. The equipment features steady running, stable structure, large capacity and high mixing evenness. It is the ideal in remedy factory for final blending. And it is also widely used in nutriceutical, food, animal remedy and chemical industry.
Bin Blender,Fixed Bin Blender,Square Cone Mixer,Powder Bin Blender
Changzhou Lead Machinery Technology Co.,Ltd , https://www.leaddryer.com