Xylem GOULDS REDJACKET Série Directives D'installation, D'utilisation Et D'entretien page 7

Step 3. To install the pipes, use either non-toxic sealing
compound or tape on male thread joints to facilitate mak-
ing air tight joints. Pipe should be supported with a pipe
holder or clamp. Fill each pipe section with water when
lowering, constantly observing for leaks. Lower until injec-
tor is submerged at least 5' below the lowest anticipated
water level. The foot valve should be at least 2' from the
bottom of the well.
Step 4. If you are using 2" single pipe injector ( Figure 6),
the packer assembly may have to be forced into the well
casing as it must be tight against both the casing and the
suction pipe.
Step 5. An appropriate well seal or adapter should be
installed at the top of the well casing and two bolts drawn
up until the rubber gaskets are tight against both the well
casing and the pipes.
Step 6. Horizontal piping from the well to the pump
should be as short as possible to avoid increased friction
losses. Table C shows the correct pipe sizes for horizontal
runs. Pipe should pitch upward from the well to the pump
about 1" for each 10' of pipe to prevent air pockets in the
line. Plumbing should be below the frostline or otherwise
protected from freezing.
Step 7. It is important to clean the well of sand and muddy
water to prevent damaging your pump. Clean the well by
inserting a garden hose down the well pipe and surging
water into the well. Wait until the water flowing out of the
suction pipe is clean.
Section 5
Installing or Replacing a
Deep Well Pump
Your Red Jacket convertible jet pump can replace most
deep well pumps with piping adjustments.
On Red Jacket jet pumps the smaller top pipe is the drive
pipe and bottom larger pipe is the suction pipe (Figure 7.)
In certain installations, the larger suction pipe may be at the
top and the smaller drive pipe at the bottom of the existing
pump (Figure 8.) On these installations, a crossover adapt-
er reversing the drive and suction pipes can be assembled
with nipples, elbows, couplings and pipe (Figure 9.)
DRIVE
PIPE
SUCTION
PIPE
JET PUMP PIPING
SYSTEM
FIGURE 7
DRIVE PIPE
REPLACEMENT PIP-
ING SYSTEM
FIGURE 8
TYPICAL INSTALLATIONS
In order to eliminate unnecessary down time in your water
supply, take a few minutes before you start the installation
to study your existing piping system and the typical JET
pump system layouts shown in Figure 10. In some cases
additional piping may be necessary. Be sure to identify: 1)
suction pipe and drive pipe; 2) service line from the pump
to the pressure tank or residence; 3) the air volume control
line from the pump to the pressure tank. If you are replacing
a conventional pressure tank with a pre-charged air tank, the
air volume control line is not necessary.
If you want to use a top discharge system, a "T" manual
regulating valve is necessary.
PUMP CASE
PIPE
SUCTION
DRIVE PIPE
SUCTION PIPE
ADDITIONAL PIPING
REQUIRED
1. 1" x 4" Galvanized Nipple
2. 1" x 90° Elbow (3 required)
3. 1" x 6" Galvanized Nipple (2 required)
4. 1 - 1/4" x 6" Galvanized Nipple
5. 1 - 1/4 " Coupling
FIGURE 9
SUCTION
PIPE
CROSS OVER
ADAPTER
7