4
For jet pump installation, remove AVC tube from port in pump
body or jet body and plug port (see Figure 3). New pumps
come with plug installed.
NOTICE:
When working on submersible pumps in wells be sure
safety rope is solidly connected to pump and to secure anchor
at the well head at all times.
Do not drop the pump down
the well!
NOTICE:
For submersible pump installations, there may be
bleeder orifices in the vertical discharge pipe. When the bleed-
er orifices are functioning correctly, they add air to the water
in the system. They must be removed and the tees plugged
when a pre-charged tank is installed in the system. To do this,
raise the pump and discharge piping enough to bring the
bleeder orifices clear of the well. Remove the bleeder orifices
from tees and replace with plugs (see Figure 4). Bleeder ori-
fices may be any of several sizes. Have a pair each of 1/2",
3/4", and 1" plugs available. Replace pump and reconnect the
discharge pipe.
NOTICE:
To be sure joint is not cross-threaded and threads are
clean, make connections by hand (without sealer) first. When
threads are clean, remove pipe, add Teflon tape or Plasto-Joint
Stik, and remake connection. Tighten by hand first; finish with
pipe wrench.
In areas where temperature is high for long periods of time,
tank pre-charge pressure may increase. This may reduce tank
drawdown (amount of water available per cycle). If this
occurs, adjust pre-charge pressure according to Chart 1,
page 3.
Flush all air out of piping system and water reservoir por-
tion of pre-charged tank. This is required on: new installa-
tions, pumps requiring repriming, and pumps disassembled
for service.
Do as follows:
1. Open faucets furthest from tank and run pump.
2. Run pump until sputtering stops and steady stream of
water flows.
3. Open and close faucets repeatedly until all air has been
removed.
4. If stream does not become steady, air may be leaking into
system; check for leaks in piping on suction side of pump.
NOTICE:
To prevent waterlogging, check tank air charge
annually.
TO CHECK TANK AIR CHARGE
If drawdown decreases significantly, check as follows:
1. To check air charge in tank, shut off electric power to
pump, open faucet near tank, and drain completely.
2. At air valve, check tank air pressure with tire gauge. See
Chart 1, page 3, for correct pressure setting. If needed,
adjust tank pressure up or down.
3. Use soap or liquid detergent to check for air leaks around
air valve. Continuous bubbling indicates leak. If necessary,
release air pressure and install new core in air valve, (same
as used for automobile tubeless tires.)
148 0893
Figure 3: Plug AVC Port when installing pre-charged tank on
existing pumps. New pumps come with plug Installed.
Pitless
adaptor
Check
v
al
v
e
Pipe co
u
pling
Tape cable
to pipe
P
u
mp
Ventilated
w
ell cap
S
u
bmersible
cable
2 ft.
(.6m)
Replace orifices
w
ith pl
u
gs or
remo
v
e Tees
Figure 4
