Pentair STA-RITE DSS3HG User Manual

Maintenance 9
Maintenance
If motor is replaced, replace the shaft seal and O-Rings. Keep a seal and
O-Rings on hand for future use.
Besuretoprimepumpbeforestarting.
NOTICE: The mechanical shaft seal in the pump is water lubricated and
self-adjusting.
NOTICE: Drain pump (see Figure 16) when disconnecting from service or
whenitmightfreeze.YoucanfillthepumpwithRVanti-freeze(propylene
glycol)topreventitfromfreezing.DONOTremovetheRecirculationValve
to drain the pump (Figure 16). Remove the hex head plug on the bottom of
thePumpSuctionBodytodrainthepump.
Pump Disassembly
See Repair PartsforRef.No.references.
NOTICE: Do not disturb the recirculation valve(seeFigure16).ItisNOTa
drain plug!
1. Shut off power to the pump before working on it.
2. Close all suction and discharge valves to isolate the pump before
proceeding further.
3. Removethehexheaddrainplug(Ref.No.17)fromthesuctionbody
and drain the pump.
4. Disconnect the suction line.
5. Removefourcapscrews(Ref.No.18)fromthepump(seeFigure17).
6. Pull the pump suction body forward (see Figure 18). Remove the sleeve
(Ref.No.9)bypullingitstraightforward.Becarefulnottodamagethe
O-rings on the bracket and suction body.
7. Removethemotorcanopy,holdthemotorshaftwitha7/16”openend
wrench,andremovethenutandtwowashers(Ref.Nos.14,13,12)
from the end of the shaft. See Figure 19.
8. Slidetheimpellersanddiffusers(Ref.Nos.11,10)offoftheshaft
(Figure 19).
9. Slidethespacer(Ref.No.7)offoftheshaft,thenpulltherotatinghalf
oftheseal(Ref.No.6)forwardontheshaftandremoveit.
10. Blockupthemotor(sothattheshaftwillnottaketheweightofthe
motor when you loosen the capscrews holding the motor to the
bracket),removefourcapscrews(Ref.No.2),andslidethemotorand
shaft back out of the bracket (see Figure 20).
NOTICE: To avoid springing the shaft, be sure that the shaft does not
take the weight of the motor as you remove it.
4314 0203
Figure 19
Figure 20
4315 0203
4312 0203
Figure 17
4313 0203
Recirculation Valve –
Do not Disturb!
Figure 18
5886 0908
Drain Plug
Recirculation Valve:
Do not disturb
when
draining pump!
Vent Plug
Figure 16

Pentair STA-RITE DSS3HG Specifications

General

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