1.0 purpose Make sure the pump is always in good running or standby condition. 2.0 scope of application All buildings installed life pumps, fire pumps, spray pumps, booster pumps, sewage pumps, air conditioning pumps. 3.0 responsibilities Maintenance by the management office is responsible for regular maintenance of the pump. 4.0 content 4.1 daily life pump and air conditioning pump once a week to conduct routine inspection and maintenance, once every six months to conduct a comprehensive maintenance. 4.2 fire pump and spray pump Every month, booster pump test run once every February, running time 10-15 minutes, start fire pump at the top of the test tube fire hydrant outlet jet range of 6M or more, once every six months Full maintenance. 4.3 sewage pump, submersible pump every six months to conduct a comprehensive maintenance. 4.4 Pump maintenance should be connected with the pump body within 2 meters of the valve , pressure gauge, piping, etc. with the pump at the same time maintenance. 4.5 pump body care 4.5.1 Check the pump body should be intact, nameplate intact, clear and clear direction of the water flow direction, clean and tidy appearance, paint intact. 4.5.2 add oil, if the oil discoloration, impurities, should be replaced. 4.5.3 Check the packing seal, if leakage should be added or replaced asbestos rope filler. 4.5.4 Coupling coupling bolts and rubber pads should be replaced if damaged. 4.5.5 Fasten the base screws and do anti-rust treatment. 4.5.6 Living pumps and air conditioning pumps due to frequent operations, the bearings should be open at both ends of the shaft to be cleaned or replaced each year. 4.6 motor maintenance 4.6.1 Appearance inspection should be neat, nameplate intact, ground wire connection is good. 4.6.2 Disassemble the lead connecting piece in the junction box of the motor and test the phase and phase of the motor windings with a 500V megger to measure the insulation resistance of the motor in a relative sense of not less than 0.5 megohms. 4.6.3 Motor terminal box three-phase wires and connectors should be firmly and tightly. 4.7 related valves, pipes and accessories maintenance 4.7.1 Each valve should be flexible and reliable switch, no leakage inside and outside. 4.7.2 Check valve action should be flexible, no leakage inside and outside the valve body. 4.7.3 pressure gauge indicates accurate, clear dial. 4.7.4 pipes and accessories appearing neat appearance, no cracks, the paint should be intact. 4.7.5 Jiggle to determine whether the correct pump steering, if any errors should be corrected. 4.8 control cabinet maintenance 4.8.1 Disconnect the control cabinet total power, check the transfer switch, start, stop button action should be flexible and reliable. 4.8.2 Check the cabinet air switch, contactor, relays and other electrical equipment is intact, tighten the electrical contact wire and wiring terminals wiring screws. 4.8.3 clean the dust inside and outside the control cabinet. 4.8.4 Close the main power, check the power indicator should be normal. 4.9 maintenance is completed Start the pump, observe the ammeter, indicating light is normal. 4.10 Observation Pump operation should be smooth, no significant vibration and noise, pressure gauge indicates normal, the control cabinet of the appliances without adverse noise. 5.0 Main pump maintenance project 5.1 SB single suction centrifugal pump maintenance projects and requirements No. Maintenance project operation requirements and technical requirements 1 Check the stuffing box The pump uses stuffing box sealing, we must pay attention to stuffing elastic, too loose too much water affect performance, in normal time, the amount of water leakage should be about 60 drops per minute, the drip is normal, the water splash around is not normal 2 Check the mechanical seal The pump mechanical seal, should not break the water operation, debugging can only be an instant momentary movement, the mechanical device in normal operation will have a small amount of drip from the retaining ring outflow, when the leakage is more , Should check the friction ring, repair or replacement of the mechanical seal Under normal circumstances, the life of 8000 hours, generally do not have to replace the entire set As long as the ring and static ring transfer ring can be a pair of friction ring 3 Lubricated bearings The pump imported SKF series of semi-enclosed bearings, the factory has been raised temperature grease, can be run continuously for 2 years, the annual need to add grease once a year 4 Check impeller cleaning Foreign matter In special cases, the pump impeller damaged or rolling into the foreign body, you need to check the clean-up, you need to remove the bearing body and the tail cover, pulled out to the rear shaft and impeller, the pump body and the inlet and outlet nozzle without demolition 5 Check wearing parts The main wearing parts include flexible couplings, mechanical seals, static and dynamic rings, O-type rubber rolls, bearings, impeller nuts, packing plate, etc., should pay attention to careful inspection, such as damage should be promptly replaced