Made of stainless steel, the self-priming pump features simple and reliable structure and is durable. Under normal conditions, the pump generally does not require frequent disassembly and maintenance.
If an error is detected, it can be fixed at any time.
1. There are several main parts to consider when servicing the pump:
a. Roller bearing:
After the pump has been in operation for a long time, the bearing must be replaced if it is worn to a certain extent.
b. Front O-ring, Rear O-ring:
When the O-ring wears to a certain extent, it must be replaced.
c. Mechanical seal:
If the mechanical seal is not leaking, should it generally not be dismantled?
Check. If severe leakage occurs at the leakage port at the bottom of the bearing body, the mechanical seal should be inspectedtion to be disassembled.
When assembling and disassembling the mechanical seal, be careful with it, pay attention to cleaning the mating surface, protect the mirror surface of the static ring and moving ring, and strictly prohibit shock and collision.
The main reason for the mechanical seal leaking is the brushing of the mirror surface due to friction.
The repair method is to grind the friction end face to restore the mirror surface.
Another reason for the mechanical seal to leak is that the “O” shaped rubber sealing ring (or cushion) is improperly installed or has become deformed and aged. At this point, the reassembly o-ring must be adjusted or replaced.
2. Sequence of disassembling the pump:
a. Remove the motor or detach the clutch.
b. Remove Sie the bearing body assembly, check the radial clearance between the impeller and the front mouth ring and check if the impeller nut is loose.
c. Remove the impeller nut, pull the impeller out and in Check the impeller and rear O-ring.
d. Loosen the mechanical seal fixing nail, pull out the moving ring portion of the mechanical seal, check the seating of the end faces of the moving and static rings, and check the sealing condition of the “O” ring (or cushion).
e. Unscrew the coupling retaining nut and pull out the coupling.
f. Remove the bearing cover and remove the pump shaft and bearing.
/> g. The assembly can be done in reverse order during installation.
The above is the maintenance and disassembly method of the stainless steel self-priming pump. I hopee, it will be helpful for everyone.