Lancaster 7-LXDAN-1B, Инструкция по установке, эксплуатации и обслуживанию

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PAGE 4
OPERATION:
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 during normal operation.
During the regeneration cycle, this position also
allows the control valve to provide regeneration water
to the filter while also providing untreated water to the
building plumbing system.
(see figure 1)
2. Bypass Position: The inlet and outlet handles
point to the center of the bypass. The control valve
is isolated from the water pressure contained in the
building plumbing system. Untreated water is supplied
to the building plumbing system.
(see figure 2)
3. Diagnostic Position: The inlet handle points in
the direction of flow and the outlet handle points to
the center of bypass valve. System water pressure is
allowed to the control valve and the building plumbing
system while not allowing water to exit from the control
valve to the building plumbing.
(see figure 3)
4. Shut Off Position: The inlet handle points to the
center of the bypass valve and the outlet handle points
in the direction of flow. The water is shut off to the
building plumbing system. The filter will depressurize
upon opening a tap in the building. If water is available
on the outlet side of the filter it is an indication of
water bypassing around the system (i.e. a plumbing
connection somewhere in the building bypasses the
system).
(see figure 4)
The bypass valve is typically used to isolate the control valve from the plumbing system’s water pressure in order to perform control
valve repairs or maintenance. The X-Factor bypass valve is particularly unique in the water treatment industry due to its versatility
and state of the art design features. The 1” full flow bypass valve incorporates four positions, including a diagnostic position that
allows service personal to work on a pressurized system while still providing untreated bypassed water to the facility or residence. Its
completely non-metallic, all-plastic design allows for easy access and serviceability without the need for tools.
The bypass body and rotors are glass filled Noryl
®
(or equivalent) and the nuts and caps are glass filled polypropylene. All seals are
self-lubricating EPDM to help prevent valve seizing after long periods of non-use. Internal o-rings can easily be replaced if service is
required.
The bypass consists of two interchangeable plug valves that are operated independently by red arrow-shaped handles. The handles
identify the flow direction of the water. The plug valves enable the bypass valve to operate in four positions.
The working parts of the bypass valve are the rotor assemblies that are contained under the bypass valve caps. Before working on the
rotors, make sure the system is depressurized. Turn the red arrow shaped handles towards the center of the bypass valve and back
several times to ensure rotor is turning freely.
The nuts and caps are designed to be unscrewed or tightened by hand. If necessary a pliers or the service spanner wrench can be
used to unscrew the nut or cap. Do not use a pipe wrench to tighten or loosen nuts or caps. Do not place screwdriver in slots on caps
and/or tap with a hammer.
Refer to page 23 for bypass valve parts diagram and page 24
for service spanner wrench information.
To access the rotor, unscrew the cap and lift the cap, rotor and handle out as one unit. Twisting the unit as you pull it out will help to
remove it more easily. There are three o-rings: one under the rotor cap, one on the rotor stem and the rotor seal. Replace worn
o-rings. Clean rotor. Reinstall rotor.
When reinstalling the red arrow handles be sure that:
1. The handle pointers are lined up with the control valve body arrows, and the rotor seal o-ring and retainer on both rotors face
to the right when being viewed from the front of the control valve; or
2. Arrows point toward each other in the bypass position.
Since the handles can be pulled off, they could be accidentally reinstalled 180° from their correct orientation. To install the red arrow
handles correctly, keep the handles pointed in the same direction as the arrows engraved on the control valve body while tightening the
bypass valve caps.
figure 1
figure 2
figure 3
figure 4
BYPASS VALVE