Xylem IM102 R05 Jet Pumps - Manual (Page 6)

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All other horizontal deep well jet pumps, ¾ hp and
larger, should use an AV22KIT, or an AV22 and a JDW
tubing kit. The AV22 has a tapping to which you connect
the new, longer pressure switch tubing. This allows the
pressure switch to read the pressure on the outboard
side of the valve rather than in the pump casing. Remove
the straight or elbow compression fitting from the pump
casing. Use the pipe plug in the JDW or AV22KIT to plug
the hole in the pump casing. Remove the fitting from
the pressure switch. Cut the old tubing in half and slide
the compression fittings off the old tubing. Note that the
fitting will only slide in one direction. You can now reuse
the elbow compression fitting with the new tubing at the
pressure switch. Screw the new straight connector into
the AV22 and attach the tubing from the switch to the
AV22.
Vertical deep well pumps come with a built-in AV21 and
only need to be adjusted.
After the pump is primed and flowing water at a steady
pressure you should open a few faucets and adjust the
pressure control valve to the pressure listed in the chart.
To increase pressure close the valve, AV15 or AV22, or
turn the AV21 screw clockwise. See Chart 1.
ALL SYSTEMS
Install HydroPro Water Systems Tank
While the tank is empty check the pre-charge
air pressure with a tire pressure gauge. The
tank pre-charge should be set 2 psi lower than
the pump cut-in (turn on) pressure. On Goulds
Water Technology HydroPro Water Systems
tanks the valve cap is the primary seal so be
sure to re-install the cap after checking air
pressure. Avoid frequent air checking as you lose 1 – 2
psi every time you check. Goulds Water Technology jet
pumps are all supplied with 30 – 50 psi standard pressure
switch settings.
Locate the tank on a firm, level surface.
A pressure relief valve is recommended for all systems,
and mandatory for systems producing over 100 psi. It
should be rated less than 100 psi but greater than the
system pressure near the tank.
Make the piping connection between the pump discharge
and the tank. Complete the piping by connecting to the
house plumbing.
Note: Goulds Water Technology only sells the HydroPro
Water System tanks. They are all shipped with a tank
installation guide in the carton, please refer to it for more
detailed tank instructions. If you are using a tank from
another manufacturer please contact that company for
specific instructions on their tank.
Galvanized tanks are installed the same as pre-charged
tanks except they require an Air Volume Control (AVC)
to replenish air lost through absorption. The AVC re-
quires connection to a vacuum port on the pump. The
suction side of the AVC must have a minimum 3" vacuum
for 15 seconds when the pump starts. Follow the instruc-
tions provided with the air volume control.
Priming a Shallow Well System
Priming means filling the pump and suction pipe with
water. Most shallow well jet pumps handle air well and
will evacuate air from the suction line but it may take
several minutes to prime depending on depth to water,
and pipe size and length.
VENT THE PUMP FOR EASIER PRIMING!
It is easier to prime a pump if you allow all the air to
escape from the pump and the pipes, the water cannot go
in unless the air can escape!
Remove the pipe plug or pressure gauge bushing in the
discharge tee to fill the pump with water. On shallow
well pumps you should remove the 1 ⁄
8
" pipe plug located
between the suction and discharge ports to allow air to
escape as you fill the casing with water. The port will be
located on either the top of the casing or the top of the
shallow well adapter. Fill the pump and as much of the
suction pipe as possible with water through the discharge
port.
Replace the 1 ⁄
8
" pipe plug and discharge gauge/bushing.
Open the faucet closest to the pump/tank a small amount
to allow air to escape the system. Do not open it too
much or the pump will expel too much water and you
will have to reprime the pump casing. On jobs with long
suction pipes you may have to add water to the pump
casing several times to complete the priming process.
Go to Power Motor.
Priming a Deep Well System
Priming a deep well system means filling the pump and
the suction/pressure pipes with water. Deep well single
stage and multi-stage pumps require a complete prime
before starting. Filling the pipes with water before instal-
ling the pump will make priming faster and easier.
VENT THE PUMP FOR EASIER PRIMING!
To insure a complete prime we recommend removing the
angled 1 ⁄
8
" vent plug located just above the suction pipe
on horizontal pumps. This will allow the air to easily
escape as water enters. Our horizontal convertible deep
well jets should be primed through a tee or the AV22 at
the pump discharge. The tee is not supplied by Goulds
Water Technology.
Our vertical deep well jet pumps have built-in pressure
control valves. Priming is done through the pressure
gauge port on the pressure control valve. Most verticals
have a vent plug located on the side of the motor adapter
that vents the seal cavity which is the high point inside
the pump. Removing this vent plug will make priming
much easier.
AV22
ALL SYSTEMS
Fig. 4
AV15
AV21
Hazardous pressure can
cause personal injury or
property damage.
WARNING