1. The maintenance of the pump should pay attention to several major parts:
A. Rolling bearing: when long-term operation, bearing wear to a certain extent, must be replaced.
B. The front sealing ring, after the seal ring: when the seal ring wear to a certain extent, must be replaced.
C. Mechanical seal: mechanical seal in the case of non leakage, the general should not be open to check. If the lower bearing body place of leak serious leakage, should be dismantled for inspection of mechanical seal. Assembly and disassembly of mechanical seal must be handle with care and attention with the surface clean and quiet protection ring and moving ring mirror, is strictly prohibited knock. Because of the mechanical seal leakage and friction is the main reason to surface galling. The repair method can be used for grinding the end face of the friction pair to restore the surface of the mirror surface. Another reason for the leakage of mechanical seal products is the improper installation of the O ring, or the aging of the aging. At this point, it is necessary to replace the O ring for re assembly.
2. Pump disassembly sequence:
A. Remove the motor coupling or extrusion.
B. Remove bearing assembly, check the impeller and radial clearance before opening ring, check the impeller nut loosening.
C. Remove the impeller nut, pull the impeller, check the impeller and the radial clearance of the seal ring.
D. Loose mechanical seal of the fixed screw, pull out the mechanical seal of the dynamic loop part, check the dynamic and static ring end face fitting situation, check the sealing condition of the O shaped sealing ring.
E. Screw out the fastening screws of the coupling, pull out the coupling.
F. Remove the bearing cover, pump shaft and bearing.
G. Installed in the reverse order of the assembly can be.
