Pentair STA-RITE DSS3HG User Manual

Operation 8
Priming The Pump
NOTICE:Theterm‘priming’referstotheprocessofpumpingalltheair
out of the system, filling the pump and suction piping with water, and
beginning to move water through the pump and out into the system. A ‘self-
priming’pumpgenerallywillrepeatthisprocesswithoutattentiononce
the pump and system are full of water. If the water drains out of the pump
(back into the well, for example), then the whole priming process must be
repeated before operating the pump again.
Tomakesurethatthepumpwill‘retainitsprime’(thatis,thatthepump
anditspipingwillstayfullofwater),BESUREtoinstallacheckvalveinthe
pump inlet port with the flow arrow pointing towards the pump. The check
valve will prevent water from siphoning out of the pump body and back
down into the well, which will keep the pump full and allow it to restart on
its own.
DO NOT remove the recirculation valve cover (there are spring-loaded
parts inside the recirculation valve – see Figure 16) when priming or
draining the pump. The drain is a hex-head pipe plug underneath the pump
body.Todrainthepump,removethehexplug(Ref.No.17,Repair Parts
diagram). Do not disturb the recirculation valve(Ref.No.19).
• Ifthepumporthesuctionpipehavebeendrainedforanyreason,
BESUREtoreprimethepumpbeforestartingit.
NOTICE:NEVERrunthepumpdry.Runningthepumpwithoutwaterinit
will damage the seals, can melt the impellers and diffusers, and voids the
warranty. To prevent damage, fill the pump with water before starting.
1. Remove priming plug (Figure 13).
2. Makesuresuctionanddischargevalvesandanyhosesondischarge
side of pump are open.
3. Fill pump and suction pipe with water.
4. Replaceprimingplug,usingPTFEtapeonthread;tightenplug.
NOTICE: If a priming tee and plug have been provided for a long
horizontal run, be sure to fill suction pipe through this tee and replace
plug.(Don’tforgettoPTFEtapetheplug.)
5. Start pump: water should be produced in 5 minutes or less, the
timedependingondepthtowater(notmorethan20’)andlengthof
horizontalrun(10’ofhorizontalsuctionpipe=1’ofverticalliftdueto
friction losses in the pipe).
If no water is produced within 5 minutes, stop pump, release all
pressure, remove priming plug, refill and try again.
Hazardous pressure and risk of ex plo sion and scalding. If pump
is run con ti nu ously at no flow (that is, with discharge shut off or without
priming),watermayboilinpumpandpipingsystem.Understeampressure,
pipes may rupture, blow off of fittings or blow out of pump ports and scald
anyone near.
To prevent explosion, do the following:
A. Besuredischarge(valve,pistolgriphosenozzle,etc.)isopenwhenever
pump is running.
B. Ifpumpfailstoproducewaterwhenattemptingtoprime,release
all pressure, drain pump and refill with cold water after every
twoattempts.
C. When priming, monitor pump and piping tempera ture. If pump or
piping begin to feel warm to the touch, shut off pump and allow system
to cool off. Release all pressure in system and refill pump and piping
with cold water.
Figure 13 – Remove Priming Plugs
4324 0203
Figure 14 – Fill Pump Before Starting
4325 0203
Figure 15 – Do Not Run Pump with
Discharge Shut-off.
1117 0993

Pentair STA-RITE DSS3HG Specifications

General

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