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Injector Cap, Screen, Injector Plug and Injector
Disassembly and Inspection
The injector can be accessed at the back of the valve by removing the threaded injector cap. The cap is removed by using the
V3193-02 service wrench (figure 1).
Once the cap is removed:
•
AM1.5 valve can use the bottom threaded edge of the injector cap at an angle to pry out the injector
•
AM2/AM2QC valves can use the open end of the V3193-02 service wrench at an angle to pry out the injector
An injector consists of a throat and nozzle. It can be chemically cleaned with vinegar or dilute sodium bisulfate. The holes can be
blown out by air. Sharp objects, which can score the plastic, should not be used to clean the injector. Scoring the injector or
increasing the diameter of the injector hole could change the operating parameters of the injector.
If the AM1.5 valve does not use a regenerant the injector plug should not need to be cleaned, just verify that it has both O-rings on
the plug and that it is fully seated.
Reassembly
Press injector into its bore hole and press until seated all the way down. Replace the injector cap.
Refill Flow Control Assembly or Refill Port Plug
Disassembly and Inspection
To clean or replace the refill flow control, remove the nut (AM2) or pull out the locking clip (AM1.5 valves) and then pull the fitting
straight out. Remove the flow control retainer. The flow control can be removed by prying upward through the side slots of the
retainer with a small blade flat screwdriver, being careful not to mar the plastic seat.
Chemically clean the flow control or the flow control retainer using dilute sodium bisulfite or vinegar. Do not clean with abrasive
methods. If necessary, replace the flow control, the O-ring on the flow control retainer, or the O-ring on the fitting.
Reassembly
Insert the flow control into its seat, confirming the correct flow control orientation. Reseat the flow control retainer and reassemble the
fitting (see diagram in the exploded view section).
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 retainer, but not on the flow control or its seat.
Refill port plugs should not need to be serviced. O-rings may be replaced if necessary.
Regenerant Body
Disassembly and Inspection
Turn off supply water & relieve system pressure.
The regenerant body would typically only be removed for servicing of the injector screen (not applicable to 2” valves). Removing
the injector cap can allow much of the contained water to drained before removing the body. Remove the (4) ¼-20 screws, the
body can then be pulled straight back off the main body taking care to not lose the O-ring between the regenerant & main body. The
injector screen is installed inside the plastic body behind the injector feed tube. The injector screen can be pushed out from the half
round hole feature behind the injector cap. For injector feed and draw tube identification, refer to table.
Reassembly
Insert the injector feed and draw tubes into the main body, bottoming them out in their bores. Install the injector screen in the 1.5
regenerant body, the small hole in the end of the screen will nest around a feature in the plastic body allowing the large end to be
flush with a step in the tube bore. Confirm the placement of the O-ring on the flange of the plastic body then press the regenerant
body straight onto the main body, assuring the O-rings engage the bore in the main body. Install & tighten the (4)1/4-20 screws. The
lower injector O-ring engages the ID of the injector tube which may push the injector out of position when reinstalling the regenerant
body. Verify the injector is seated all the way down into its bore, then reinstall the injector cap.
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