Watts W100T Twin Alternating Series - Manual (Page 39)

W100T Twin Alternating Series Softeners 39
Spacer Stack Assembly
To access the spacer stack assembly remove the drive assembly, drive cap assembly and piston. The spacer stack assembly can be removed
easily without tools by using thumb and forefinger. Inspect the black o-rings and clear lip seals for wear or damage. Replace the entire stack if
necessary. Do not disassemble the stack.
The spacer stack assembly may be chemically cleaned (dilute sodium bisulfite or vinegar) or wiped with a soft cloth.
The spacer stack assembly can be pushed in to the control valve body bore by hand. Since the spacer stack assembly can be compressed
it is easier to use a blunt object (5/8” to 1-1/8” in diameter) to push the center of the assembly into the control valve body. The assembly is
properly seated when at least four threads are exposed (approximately 5/8”). Do not force the spacer stack assembly in. The control valve
body bore interior can be lubricated with silicone to allow for easy insertion of the entire stack.
Reattach the drive cap assembly and piston(s) and the drive assembly.
After completing any valve maintenance involving the drive assembly or the drive cap assembly and pistons unplug power source jack from
the printed circuit board (black wire) and plug back in or press and hold NEXT and REGEN buttons for 3 seconds. This resets the electronics
and establishes the service piston position. The display should flash all wording, then flash the software version and then reset the valve to the
service position.
Injector Cap, Screen, Injector Plug and Injector
Unscrew the injector cap and lift off. Loosen cap with special plastic wrench or pliers if necessary. Attached to the injector cap is a screen.
Remove the screen and clean if fouled.
The plug and/or injector can be pried out with a small screwdriver. The plug can be wiped clean. If the plug leaks replace the entire plug. The
injector consists of a throat and a nozzle. Chemically clean the injector with vinegar or sodium bisulfite. The holes can be blown out with air.
Both pieces have small diameter holes that control the flow rates of water to insure that the proper concentration of regenerant is used. Sharp
objects, which can score the plastic, should not be used to clean the injector. Scoring the injector or increasing the diameter of the hole could
change the operating parameters of the injector.
Two holes are labeled DN and UP. Check for compliance.
Refer to Valve Body Compliance Table at the begining of this manual.
Push the plug(s) and/or injectors firmly in place, replace the screen and hand tighten the injector cap.
Refill Flow Control Assembly or Refill Port Plug
To clean or replace the refill flow control, pull out the elbow-locking clip and then pull straight up on the elbow. Replace the elbow locking clip in
the slot so that it is not misplaced. Twist to remove the white flow control retainer. The flow control can be removed by prying upward through
the side slots of the retainer with a small flat blade screwdriver.
Chemically clean the flow control or the white flow control retainer using dilute sodium bisulfite or vinegar. Do not use a wire brush. If necessary,
replace the flow control, o-ring on the flow control retainer, or the o-ring on the elbow.
Reseat the flow control so the rounded end is visible in the flow control. Reseat the white flow control retainer by pushing the retainer into the
elbow until the o-ring seats. Remove locking clip, push down on elbow to reseat and insert locking clip.
Do not use Vaseline, oils, or other unacceptable lubricants on o-rings. A silicone lubricant may be used on the o-ring on the elbow or the white
retainer.
NOTICE