Boiler feed pump maintenance tips inventory of six precautions can not be ignored

[Asia Pump Network News] Boiler feed pump before use and during use without adding any lubricant. However, after reassembly after disassembly, add appropriate grease between the central shaft and the copper sleeve, and install a grease on the inner side of the outer pressure plate when installing the membrane pressure plate, so that both are well positioned and easy to seal and disassemble. Boiler Feed Pump Maintenance Tips Inventory Six Notes Do not ignore the demolition main valve spool valve sleeve can not be used when the contact with the valve sleeve valve sleeve, valve sleeve with the spool valve is very sophisticated. Air valve and pilot valve also need to add a small amount of grease to ensure good lubrication. Boiler feed pump valve sleeve into the valve housing before O-ring coated with a small amount of grease, and then press it into your hands, do not beat. Before installing the boiler feed pump, clean and dry the inside of all the fittings (inlet part) and check whether all the seals are well sealed (mainly referring to the U-shaped ring on the shaft, the O-ring on the thimble, the O-ring on the pilot valve, Diaphragm inner and outer pressure plate compaction seal; inside and outside the cavity compaction seal; ball seat ball valve seal; pilot valve, intake cap, valve gasket seal), but also check while the side lip grease installation. Note that the boiler feed pump gaskets are positive and negative, can not pad wrong; on the guide valve to be sure to place in order to tighten the bolt, otherwise it will damage the thimble; valve on the four bolts pay special attention to the principle of balance, and can not Too tight, otherwise it will damage the valve housing. First, the boiler feed pump maintenance of the pump body 1. Check the pump should be intact, the nameplate intact, clear and clear direction of the water flow direction, clean and tidy appearance, paint intact. 2. Replenishment of lubricants, if the oil discoloration, impurities, should be replaced. 3. Check the packing seal, if leakage should be added or replace the asbestos rope packing. 4. Coupling bolt and rubber pad should be replaced if damaged. 5. Tighten the base screws and do anti-rust treatment. 6. Living gas boiler feed pump and air conditioning boiler feed pump due to frequent operations, the bearings should be open at both ends of the shaft to be cleaned or replaced each year. Second, the boiler feed pump motor maintenance 1. Appearance inspection should be neat, nameplate intact, ground wire connection is good. 2. Disassemble the lead connecting piece in the motor junction box and test the phase and phase of motor windings with a 500V megger to measure the insulation resistance between the ground and the ground should not be less than 0.5 megohms. 3. The three-phase wiring and connecting piece in the motor terminal box should be firm and close. Third, the boiler feed pump maintenance related valves, pipes and accessories 1. Each valve switch should be flexible and reliable, no leakage inside and outside. 2. Check valve action should be flexible, no leakage inside and outside the valve body. 3. Pressure gauge indicates accurate, clear dial. 4. Piping and accessories appearance clean and beautiful, no cracks, the paint should be complete without loss. 5. Jog to determine the boiler feed pump is correct, if any errors should be corrected. Fourth, the boiler feed pump control cabinet 1. Disconnect the control cabinet total power, check the switch, start and stop button action should be flexible and reliable. 2. Check cabinet air switch, contactor, relay and other electrical equipment is intact, tighten the electrical contact wire and terminal wiring screws. 3. Clean the dust inside and outside the control cabinet. 4. Close the main power, check the power indicator should be normal. Fifth, maintenance is completed Start the boiler feed pump, observe the ammeter, indicating light is normal. Sixth, observe the boiler feed pump operation should be smooth, no significant vibration and noise, pressure gauge indicates normal, the control cabinet of the appliances without bad noise. (Editor: Ye Qianwen) An expanded reading: 2016 China World Expo 2016 Beijing Oil Show pump valve pipe fittings exhibition information 2016 exhibition information

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