Franklin Electric 225A User manual
INSPECT THE SHIPMENT
Before installing jet charger on tank,
make sure that tank tapping (or hex bushing) is free of
excess galvanize flashings or any other obstruction.
Clean tapping by screwing a steel pipe plug into the
tapped opening and removing it. Otherwise an obstructed
tapping will damage the jet charger threads.
For best operation, the jet charger should be installed in
a tapped opening located approximately 1/2 the height of
the tank. Where the tank is in a horizontal position, the jet
charger is connected in the center opening at one end of
the tank.
Figure 1 & 2 - Assemble plastic tubing and fittings as
shown. With the jet charger body in a vertical position,
attach one end of the plastic tubing to the bottom opening
of the jet charger, and the other end to the suction of the
pump. (See Fig. 2)
CAUTION
CAUTION
OWNER'S MANUAL
MODEL 225A AUTOMATIC
JET CHARGER
Pipe compounds are not necessary to
seal and may damage plastic. Also avoid over-tightening.
Figure 3 - Use 7/8” wrench on plastic elbow, as shown.
Do not tighten by applying pressure to plastic body as
illustrated.
NOTE: The joint between the plastic elbow and the jet
charger body contains a rubber O-ring for sealing. This
joint should only be hand tightened.
OPERATION
The jet charger is especially designed to maintain the
proper ratio of air and water in the pressure tank. When
the water level in the tank is above the jet charger inlet,
the charger will function in conjunction with the pump
Adapter Nut
Air Charger
Poly. Tubing
Male Connector
FIGURE 1 FIGURE 2
FIGURE 3
CORRECT
WRONG
to replenish the air cushion. When the pump starts,
a low pressure area is created at the pump suction
by the rotating impeller. The pressure in the tank now
exceeding that of the pump suction, forces tank water
to flow through the charger venturi (B). (See Fig. 4) A
partial vacuum results, air is drawn in through the air inlet
valve (A) and into the charger body. (D) (Note: cap must
be loosely attached to allow proper air flow). A deflector
(C) causes water to flow down the walls of the charger,
separating air from water.
As air accumulates in the charger, the water level drops
off within the charger until the float valve (E) closes,
thereby causing the water flow to stop between tank and
pump before air can be drawn into the pump suction inlet.
With the float valve closed, the air in the jet charger is
compressed to the same pressure as in the pressure tank
and remains so until the pump stops. When the pump
stops, the pressure at the pump suction inlet becomes
equal to the tank pressure, the float rises and the water
flows from tank to pump, then up into jet charger. The air
accumulated in the charger is thus forced out and into the
pressure tank. (Fig. 5)
106260101 Rev. 3 5/11
400 E. Spring Street
Bluffton, IN 46714
Tel: 260-824-2900
Fax: 260-824-2909
www.franklin-electric.com
FIGURE 4 FIGURE 5
A
B
C
D
E
A
B
C
D
E
With each pumping cycle, this action is repeated until
sufficient pressure is transferred into tank to allow
the water level in tank to be slightly below the jet
charger intake at its starting pressure. The jet charger
automatically begins again to replenish air when the tank
water level rises above the jet charger inlet.
