1.
Normal Operation Position:
The inlet and outlet handles point in the direction of flow
indicated by the engraved arrows on the control valve. Water flows through the control valve for
normal operation of a water softener or filter. During the regeneration cycle this position provides
regeneration water to the unit, while also providing untreated water to the distribution
system
(Fig. 1).
2.
Bypass Position:
The inlet and outlet handles point to the center of the bypass. The system is
isolated from the water pressure in the plumbing system. Untreated water is supplied to the
building
(Fig. 2).
3.
Diagnostic Position:
The inlet handle points toward the control valve and the outlet handle points
to the center of bypass valve. Untreated supply water is allowed to flow to the system and to the
building, while not allowing water to exit from the system to the building
(Fig. 3)
.
This allows the
service technician to draw brine and perform other tests without the test water going to the
building.
NOTE:
The system must be rinsed before returning the bypass valve to the normal position.
4.
Shut Off Position:
The inlet handle points to the center of the bypass valve and the outlet
handle points away from the control valve. The water is shut off to the building. The water
treatment system will depressurize upon opening a tap in the building. A negative pressure in the
building combined with the softener being in regeneration could cause a siphoning of brine into
the building. If water is available on the outlet side of the softener it is an indication of
water bypassing the system
(Fig. 4)
(i.e. a plumbing cross-connection somewhere in the
building).
Figure 3
Figure 4
NORMAL OPERATION POSITION
Figure 1
Figure 2
BYPASS POSITION
SHUT OFF POSITION
DIAGNOSTIC POSITION
"TREATED"
WATER EXITS
SUPPLY
WATER ENTERS
SUPPLY
WATER EXITS
SUPPLY
WATER ENTERS
SUPPLY
WATER EXITS
SUPPLY
WATER ENTERS
NO
WATER EXITS
SUPPLY WATER IS
SHUT OFF FROM
THE HOUSE AND
THE VALVE
4
Summary of Contents for IM Series
Page 14: ...REPLACEMENT PARTS 14 ...
