Sta-Rite HMSD-1FL Installation Manual
OWNERS MANUAL
INSTALLATION AND OPERATING INSTRUCTIONS
REPAIR PARTS LIST
Horizontal Multi-Stage Jet Pumps
“HMS-1FL” Series
MODELS
STA-RITE INDUSTRIES
293 Wright St., Delavan, WI 53115
© 2005 S1002 (Rev. 3/4/09)
3/4 HP 1 HP 1-1/2 HP
HMSD-1FL HMSE-1FL HMSF-1FL
Deep Well Installation
Under certain conditions, horizontal multistage pumps can develop extremely high
pressure. Install a pressure relief valve
capable of passing entire pump flow at 75 PSI.
Do not allow pump, pressure tank, piping, or any
other system component containing water to freeze.
Freezing may damage system, leading to injury or flooding. Allowing pump or system components to freeze will
void warranty.
NOTICE: Support pump base to avoid strain on casing adapter
or pump. Lack of support can damage adapter or pump.
Figure 2 shows casing adapter bolted directly to pump body.
Shallow Well Installation
NOTICE: If no foot valve is used, install 1” check valve in
horizontal line.
Priming the Deep Well Pump
To prime pump, completely close the priming valve located
just below the suction opening by turning screw clockwise.
This valve will be left closed during operation in a deep well
installation. See Figure 1.
Close regulator adjusting valve, located on end of regulator,
by turning stem clockwise. See Figure 1.
Remove priming plug from top of regulator valve, see Figure
1, and fill with clean water. Replace plug.
Start pump and run a few moments.
If pressure does not build up, remove priming plug and refill
with more water. All of the trapped air in pump body was not
removed.
Restart pump.
When pump is completely primed and builds up pressure,
slowly open the regulator valve, (turn counter-clockwise), and
observe the pressure reading on the pressure gauge.
When the pump reaches a point where it will lose prime, cavitation noise can be heard.
The best, or correct, pressure gauge setting is approximately
3 pounds higher than the pressure gauge reading was when
the pump started to lose prime.
If pump loses prime, repeat the priming procedure above and
this time open regulator valve only until the correct pressure
reading is reached.
If a vacuum gauge is available, screw it into the 1/8” AVC
tapping on front of tank body. Adjust regulator until 20” of
vacuum is registered on the gauge. Tighten locknut on regulator. This method will give maximum performance of the
unit.
2
Priming
Valve
Pipe fittings not furnished
Drain
Plug
Drive Line
Suction
Line
Plastic Pipe
Adapter (2)
Plastic Hose
(2)
Hose Clamp
(2)
To Service
Regulator Adjusting
Valve
Priming Plug
Regulator
Va lv e
1" Close nipple &
90 Elbow
278 1093
To Service
Priming Plug
Regulator
Va l ve
279 1093
To Service
Priming
Valve
From
Well
1" Pipe Plug
Plastic Pipe
Adapter
Hose Clamp
Plastic
Hose
Pipe fittings not furnished
Priming Plug &
1/2" Street Elbow
240 1093
Figure 1 – Deep Well Installation
Figure 2 – Well Casing Adapter bolted directly
to pump
Figure 3 – Shallow Well Installation
HMSC pumps come equipped with pressure switch set to
operate within a 20-40 PSI range. HMSD, HMSE, and HMSF
pumps have 30-50 PSI pressure switches. When pump is
used with precharged tank in system, set tank pre-charge at
18 PSI with a 20-40 PSI switch; set tank pre-charge at 28
PSI with a 30-50 PSI switch. Check tank pre-charge annually
with an ordinary tire gauge. Pre-charge is set with no water
pressure on system.
Priming the Shallow Well Pump
Never run pump dry. Running pump without
water may cause pump to overheat, damaging seal and possibly causing burns to persons handling pump. Fill pump with
water before starting.
Never run pump against closed discharge.
To do so can boil water inside pump, causing hazardous
pressure in unit, risk of explosion and possibly scalding persons handling pump.
To prime the pump, completely open the priming valve located just below the suction opening on the tank body by turning
the valve stem counter-clockwise all the way until it stops.
This valve may be left open during operation as a shallow
well pump with no jet. See Figure 3 and “NOTICE” below.
Remove priming plug from top of elbow (see Figure 3), and
fill with clean water. Replace plug.
Start pump and between 45-60 seconds. If water is not being
pumped, turn off pump and repeat priming process.
NOTICE: If a bolt-on jet is being used, after pump is primed,
close the priming valve during operation as a shallow well
pump.
Service – Draining for Winter
Do not touch an operating motor. Modern
motors are designed to operate at high temperatures. To
avoid burns when servicing pump, allow it to cool for 20 minutes after shut-down before handling.
When the pump is to be disconnected from service, or is in
danger of freezing, it should be drained. The pump has a
drain plug which must be removed. Remove the priming plug
to vent the pump.
If pump and motor are damaged due to freezing, the
Warranty is void.
3
TABLE I
Recommended Fusing and Wiring Data – 60 Cycle Motors
DISTANCE IN FEET FROM MOTOR TO METER
BRANCH 0’ 101’ 201’ 301’ 401’
MAX. FUSE* to to to to to
MOTOR LOAD RATING 100’ 200’ 300’ 400’ 500’
HP VOLTS AMPERES AMPS
WIRE SIZE
3/4 115 14.8 20 12 8 6 6 4
3/4 230 7.4 15 14 14 14 12 10
1 115 19.2 25 10 8 6 4 4
1 230 9.6 15 14 14 12 10 10
1-1/2 115 24.0 30 10 6 6 4 3
1-1/2 230 12.0 15 14 14 12 10 10
*Fusetrons are recommended instead of fuses on all motor circuits.
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