1.0 Purpose To ensure that the pump is always in good operating 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 The maintenance staff of the management office is responsible for regular maintenance of the pump. 4.0 Content 4.1 Domestic water pump and air conditioning water 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 Maintenance 4.5.1 Check the pump body should be intact, the nameplate intact, clear and clear direction of 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 Visual 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 Maintenance of Valves, Piping and Accessories 4.7.1 The valves of various valves should be flexible and reliable, with no leakage inside or 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 The 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 packing box Pump stuffing box sealed, you must pay attention to packing elastic, too loose and too much water leakage affect performance, In normal conditions, the amount of water leakage should be about 60 drops per minute, normal dripping, splashing around is not normal 2 Check the mechanical seal The pump mechanical seal, should not operate under the conditions of water, debugging can only be used as a moment Moving, the mechanical device in normal operation will have a small amount of drip from the retaining ring outflow, when the leakage is more, you should check the friction ring, repair or replacement of the mechanical seal under normal life expectancy of 8000 hours, generally do not have to replace the entire package Exchange ring and ring this pair of friction ring can be 3 lubricated bearings The pump imported SKF series of semi-enclosed bearings, the factory has been high temperature grease, continuous operation for 2 years, after the annual need to add grease once 4 Check the impeller to clean foreign matter In exceptional cases, the pump impeller damaged or rolling into the foreign body, you need to check the clean, you need to remove the shaft Body and tail cap, pull out the shaft and impeller to the back, the pump body and the inlet and outlet nozzles do not have to be disassembled 5 Check the wearing parts The main wearing parts of the pump include flexible coupling, mechanical seal, static and dynamic ring, O-type rubber roll, Bearings, impeller nut, packing plate, etc., should pay attention to careful inspection, such as damage should be promptly replaced