Boiler feed pumps do not require any lubricant before and during use. However, when reassembling after disassembly, apply proper grease between the center shaft and the copper sleeve. When installing the diaphragm platen, apply a layer of grease on the inside of the outer plate to make it easy to position and seal and disassemble. When the main valve spool valve sleeve is removed, the hardener can not be used to contact the valve plug sleeve, because the valve sleeve is very precise. A small amount of grease is also required when filling the valve and pilot valve to ensure good lubrication. Before the boiler feed pump valve is placed in the valve casing, apply a small amount of grease on the O-ring outside the valve casing, and then press it in by hand. Do not hit it.
Before installing the boiler feed pump, clean all the inner parts (intake part) of the fittings and check whether all the seals are well sealed (mainly refers to the U-ring on the shaft; the O-ring on the thimble; the O-ring on the pilot spool; The inner and outer pressure plates of the diaphragm are compacted and sealed; the inner and outer chambers are compacted and sealed; the ball seat ball valve is sealed; the pilot valve, the air inlet cover and the air valve gasket are sealed), and the grease can be installed while checking the edge. Note that the boiler feed pump air valve gasket is positive and negative, can not be mistaken; the upper pilot valve should be confirmed to be in place to tighten the bolt, otherwise it will damage the thimble; when the upper air valve 4 bolts, pay special attention to the principle of balance, and can not Too tight, otherwise it will damage the valve casing.
Boiler feed pump maintenance tips:
1 Boiler feed pump does not need to add any lubricant before and during use. However, when reassembling after disassembly, apply proper grease between the center shaft and the copper sleeve. When installing the diaphragm platen, apply a layer of grease on the inside of the outer plate to make it easy to position and seal and disassemble.
2 When the main valve spool valve sleeve is removed, the hardener can not be used to contact the valve plug sleeve, because the valve sleeve is very precise.
3 When installing the air valve and the pilot valve, a small amount of grease is also required to ensure good lubrication.
4 Before installing the pump, wash all the inner parts of the fittings (intake part) and check whether all the seals are well sealed (mainly refers to the U-ring on the shaft; O-ring on the thimble; O-ring on the pilot spool; diaphragm Internal and external pressure plate compaction seal; internal and external cavity compaction seal; ball seat ball valve seal; pilot valve, intake cover, valve gasket seal), can also be installed while checking the grease.
5 Apply a small amount of grease to the O-ring outside the valve casing before inserting the valve into the valve casing. Then press it in with your bare hands. Do not hit it.
6 Boiler feed pump valve gasket is positive and negative, can not be wrong; upper pilot valve should be confirmed to be in place to tighten the bolt, otherwise it will damage the thimble; when the upper valve 4 bolts, pay special attention to the principle of balance, and can not Tight, otherwise it will damage the valve casing.
