Tahoe T../MA-BTB series, Руководство по установке

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BYPASS VALVE
The working parts of the bypass valve are the rotor assemblies that are contained under the bypass valve
caps. Before working on the rotors, be sure that there is a closed shut-off valve ahead of the unit and the
system is depressurized. Turn the red arrow shaped handles towards the center of the bypass valve and
back to the arrow direction several times to ensure rotor is turning freely.
The nuts and caps are designed to be unscrewed or tightened by hand or with the Service Wrench, V3193. If
necessary a pliers can be used to unscrew the nut or cap. Do not use a standard wrench to tighten or loosen
nuts or caps. Do not place screwdriver in slots on caps and/or tap with a hammer.
To access the rotor, unscrew cap and lift the cap, rotor and handle out as one assembly. Rotating the
assembly as you pull it out will enable it to be removed more easily. There are three o-rings: one under the
rotor cap, one on the rotor stem and one on the rotor seal. Replace worn o-rings. Clean rotor. Reinstall rotor.
Before reinstalling the red arrow handles be sure that o-rings on both rotors face to the right when being
viewed from the front when the handle pointers are pointing in the same direction as the control valve body
arrows. Keep the handles pointed this way while tightening the valve caps.
Caution: Since the handles can be pulled off, they could be accidentally reinstalled 180 degrees from their
correct orientation.
After completing any valve maintenance, press and hold NEXT and REGEN buttons for 3 seconds or
momentarily unplug power source jack (black wire). This resets the electronics and establishes the service
piston position. The display should flash text, the software version (e.g. 164), and the cycle number before
resetting the valve to the service position.