Installation; Major Components And What They Do; Deep Well Pump Installation; To Install 4" Double Pipe Jet - Craftsman 390.2522 Owner's Manual

Professional "hydroglass '' convertible deep well jet pump
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INSTALLATION
NOTICE:
Use Teflon
tape supplied
with the pump or Plasto-
Joint
Stikl
for making
all pipe-thread
connections
to the
pump
itself. To avoid stress-cracking,
do not use pipe joint
compounds
on the pump.
1. Wrap male pipe threads being attached
to pump
with one
or two layers of Teflon
tape. Cover
entire
threaded
por-
tion of pipe.
2. Do not overtighten
threaded
fittings in the plastic
pump.
Be sure you do not try to tighten
joint past thread
stop in
pump
port!
3. If leaks occur,
remove
fittings, clean off old tape, rewrap
with
one to two layers of tape
and remake
the connec-
tion. If joint still leaks, replace the fittings (fittings may be
undersized).
4. Be sure to support
all piping
connected
to the System.
MAJOR COMPONENTS
AND
WHAT
THEY
DO
Tank
and
Air Volume
Control
The
tank serves
two
functions.
It provides
a reservoir
of
water,
some of which
can be drawn
through
the house
fix-
ture before
the pump
must start, and it maintains
a cushion
of air under
pressure.
When
Captive
Air + Tanks
are used, no air volume
control
is
necessary.
This tank contains
a permanent
pre-charge
of air.
When
a Standard
Tank
is used, an air volume
control
adds
air to the tank when
it is needed.
See instructions
included
with Air Volume
Control
for details
on installation
and op-
eration.
Pressure
Switch
The pressure
switch
provides
for automatic
operation.
MODEL NO.
PUMP STARTS AT PUMP STOPS AT
390.2519
40 Pounds
60 Pounds
390.2522
40 Pounds
60 Pounds
Impeller,
Jet and
Pressure
Regulator
The impeller
of the pump
rotates
with the motor shaft, caus-
ing the water
to fly out from its rim by centrifugal
force.
The
rotation
of the impeller
creates
a vacuum
which
"puns"
in
more
water.
Part of the water
is diverted
back
to the jet
where
it again passes
through
the nozzle
and venturi
- cre-
ating additional
vacuum
to draw in more water
and deliver-
ing it at high pressure
to the impeller.
In a deep
well
installation,
the jet assembly
is submerged
in the well because
the vertical
distance
to the water
level
exceeds
the suction
lift of the pump.
Adjustment
of the
pressure
regulator
causes
the
fight
amount
of water
to be diverted
back to the jet for the most
efficient
operation.
_Lake Chemical
Co., Chicago,
Blinois
In a shallow
well installation,
the jet assembly
is attached
directly
to the pump
because
the vacuum
created
will pull
water
to the pump.
The pressure
regulator
may be used to restrict
the flow of
water
in a shallow
well system
if the SEARS convertible
pump
produces
more water
than the well can produce.
DEEP WELL
PUMP INSTALLATION
(Figures
I & 2, Page 4)
In a deep well installation,
the jet assembly
is submerged
in
the well because
the vertical
distance
to the water level ex-
ceeds the suction
lift of the pump.
A single pipe system must
be used in 2" and 3" wells.
A double
pipe system
must
be
used in 4" or larger wells.
Follow instructions
packed
with jet package
for proper
noz-
zle and venturi
combination
for your ptmaping
depth.
DOUBLE
PIPE JET
When
a double
pipe jet is selected,
2 pipes are used in the
well. One is the suction
pipe,
and the other,
the pressure
pipe. Plastic
pipe is ideal for double
pipe installations,
due
to its light weight
mid easy installation.
Use 100 ponnd
flexible
plastic pipe on horizontal
jet pumps.
TO INSTALL
4" DOUBLE
PIPE JET
First, inspect
jet to make sure no foreign
matter
has entered
the openings.
Be certain
no foreign
matter
enters pipe openings
while
in-
stalling
the unit.
Plastic
Pipe
Installations
1. Attach
a foot valve (not furnished)
to the jet with a short
nipple.
2. Before installing,
be certain
foot valve operates
freely.
3. A special
plastic
pipe
adapter
is included
with
the jet
which
screws
into the 1-1/4" suction
tapping
over the
venturi.
4. Assemble
a plastic
pipe
adapter
(not furnished)
into
1"
tapping
in the jet body.
5. Use sufficient
length
of plastic pipe to place the jet 10-15
feet below
the lowest
drawdown
water level. This is the
level to which
the water in the well will drop while being
pumped
continuously.
6. Tighten
all hose clamps securely.
A sanitary well seal is re-
quired
on top of the well casing.
Use steel nipples
and el-
bows or specialized
galvanized
steel elbows
to go through
the well seat. Use plastic
pipe adapters
where
special
el-
bows are not used.
6

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