PRE-CHARGE TANk CONNECTION (Figure 6)
If your system uses a pre-charged tank, it should be
connected to the pump as shown in Figure 6. The relief
valve must be capable of passing the entire pump capac-
ity at 100 PSI pressure.
Check the pre-charge of air in the tank with an ordinary
tire gauge. the pre-charge is measured when there is
no water pressure in the tank. Disconnect power to the
pump and drain the tank before checking the pre-charge.
Your pump has a 30/50 PSI switch, so the tank pre-
charge pressure should be 28 PSI (that is, it should be 2
PSI lower than the cut-in pressure of the pressure switch.
No AVC is required for a pre-charged tank; the
1/8" NPT AVC port on the pump body should be
plugged.
STANDARD TANk CONNECTION (Figure 7)
If your system uses a standard tank, connect it to the
pump as shown in Figure 7. The relief valve used with
a standard tank must be capable of passing the entire
pump capacity at 75 PSI pressure.
Connect the Air Volume Control (AVC) tube to the
1/8" NPT AVC port on the pump body. Run the tubing
from the pump’s AVC port to the AVC mounted on the
tank. See the instructions provided with tank and AVC
for details.
Discharge Pipe and Pressure Tank Connections
5
To Household
Water System
Pressure
Switch
Suction Pipe
From Well
Air Volume
Control
Air Volume
Control Tube
Priming Tee
and Plug
Relief Valve
Drive Pipe
To Well
Standard
Tank
2096 0497
20
40
60
80
100
Figure 6: Pre-charged Tank Connections
Figure 7: Standard Tank Connections
From
Well
To Household
Water System
Relief Valve
Pre-Charged
Tank
20
40
60
80
100
Pressure Gauge
Pressure
Switch
2110 0497
Pre-charged
Tank
Sealing Pipe Joints
Use only PTFE pipe thread sealant tape for making
all threaded connections to the pump itself. Do not
use pipe joint compounds on plastic pumps: they
can react with the plastic in pump components.
Make sure that all pipe joints in the suction pipe are
air tight as well as water tight. If the suction pipe
can suck air, the pump will not be able to pull water
from the well.