Pentair STA-RITE DSS3HG User Manual

Maintenance 10
Seal Removal
1. Followtheinstructionsunder“PumpDisassembly”,above.
2. Removethedischargepipefromthebracket(Ref.No.4).
3. Remove the hold down bolts from the bracket.
4. Turn the bracket motor side up on the bench and use a screwdriver to
carefully tap the stationary seal half out of the bracket (see Figure 21).
5. Clean the seal seat cavity in the bracket.
Seal Installation
1. Turnthebracketpumpsideuponthebench.Youwillneedtoblockit
up to do this (See Figure 22).
2. Clean the seal cavity in the bracket.
3. Wet the outer edge of the rubber cup on the ceramic seat with liquid
soap.Besparing!
4. Put a clean cardboard washer on the seal face. With thumb pressure,
press the ceramic seal half firmly and squarely into the seal cavity.
The polished face of the ceramic seat is up. If the seal will not seat
correctly, remove it, placing the seal face up on the bench. Reclean the
cavity. The seal should now seat correctly.
5. If the seal does not seat correctly after recleaning the cavity, place a
clean cardboard washer over the polished seal face and carefully press
itintoplaceusingapieceofstandard3/4”pipeasapress.
NOTICE:Besureyoudonotscratchthesealface.
6. Dispose of the cardboard washer and recheck the seal face to be sure it
is free of dirt, foreign particles, scratches and grease.
7. Inspect the shaft to be sure it is free of nicks and scratches.
Pump Reassembly
1. Boltthebracketdowntothefoundation(seeFigure23).
2. Slide the motor shaft through the seal and bolt up the motor (see
Figure23).Makesurethattheslingerisontheshaftbetweenthe
bracketandthemotorflange.Makesurethatyoudon’tchiptheseal
face with the shaft shoulders and that the shaft does not take the weight
of the motor at any time.
2. CAREFULLYslidetherotatingsealhalfontotheshaft,sealfacefirst.
Makesurethatyoudon’tchipthesealfaceontheshaftshoulders.
3. Followthesealhalfwiththespacer(Ref.No.7).Slidethewasherup
against the seal.
4. Slide a diffuser onto the shaft (open face out) until it seats on the
bracket (see Figure 24). Follow the diffuser with an impeller on a four-
stage pump or with the stainless steel spacer if a three-stage pump.
Engagethemoldedimpellerkeyintheslotintheshaft.Don’tforceit!
Besurethattheimpellereye,withmetalring,facesout(forward-see
Figure 25).
5. Repeat step 4 with the remaining impellers and diffusers.
6. Reinstall the toothed washer, the flat washer, and the impeller nut (in
thatorder–Ref.Nos.12,13,14)ontothemotorshaft(seeFigure26).
Holdtheshaftandtightentheimpellernutto10ft.-lbs.torque.
7. CheckthesleeveO-Rings;iftheyshowanydamageorwear,replace
them.ReinstallthesleeveO-Rings(Ref.No.8)onthebracketandthe
suction body.
4319 0212
Figure 24
4336 0303
Pipe
Cardboard
Washer
Seal Half
Figure 22
Slinger
4318 0203
Figure 23
Figure 21
4316 0203
Figure 25
6433 0711
Correct orientation Incorrect orientation
Metal ring

Pentair STA-RITE DSS3HG Specifications

General

Brand	Pentair
Model	STA-RITE DSS3HG
Category	Water Pump
Language	English