3
HS SERIES MULTISTAGE PUMP ASSEMBLY
1. Fit the ceramic wear face to the stainless steel backplate using a little water on the
rubber boot. Ensure that it is square and pushed all the way into the backplate.
2. Put the slinger onto the motor shaft and press it all the way down to the drive
endshield. Ensure that it is put on in the right direction
with the taper facing forward.
3. Assemble the backplate to the motor and put the mechanical seal on using a little
water on the rubber boot and pushing it down over the shaft until the seal faces
meet. The carbon seal face should be in contact with the ceramic wear face.
4. Stand the motor vertically on the fan end for ease of assembly of impellers and
stage bodies.
5. Fit the last stage impeller with neck ring facing you and push it down onto the
mechanical seal. You will see that there are two flats running the length of the shaft
and two corresponding flats in the impeller for better drive.
6. Next fit the floating wear ring. This should fit over the neck ring of the impeller.
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