Hydrotech 89-series Control Valve Injector Replacement
N. T. Crotser and
Last updated on May 7, 2024
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Introduction
Go to step 1 ↓This guide will aid you in replacing (or cleaning) the Injector Nozzle, Injector Throat, and Injector Screen in a Hydrotech 89-series Control Valve used on water softeners and iron filters.
You may need to do this if your equipment is malfunctioning in the following ways:
- Not drawing brine correctly or efficiently
- Not drawing brine at all
- Sending water to the brine tank during the brine draw cycle
What you need
Parts
Tools
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Locate the RED bypass knobs.
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Using an allan key or a pair of pliers, turn the knobs so the stamped arrows are facing each other.
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CAUTION: The bypass knobs may become detached, if this happens take note of the position of the knob and return the knob to that position and press down to reseat it.
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Unlock the valve.
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Press and hold the {MENU} key until the valve beeps/the padlock icon disappears.
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Activate manual regeneration
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After the valve is unlcoked, press the [MENU] button once more to bring up a menu prompt.
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Repeatedly press the {DOWN] button until "Manual Regen" is selected.
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Press Set
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Use the [UP} arrow to select "Regen Now" and press {SET} to begin the regeneration process.
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Press and hold any button for approximately 3 seconds to skip ahead, do this until the valve is in either BACKWASH or RINSE.
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Wait until the time begins to count down to ensure it is has relieved pressure
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Note: If you have a Downflow valve or are using this valve on a filter your first regeneration cycle will be BACKWASH, you won't need to skip ahead.
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Note: The valve may take a couple of minutes to move between cycles, please be patient with it.
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Finally, disconnect the valve from the power supply by unplugging the 12v A/C adapter from the wall.
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Removing the Injector Cover (A36)
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Remove the two #2 Phillips screws (A4) from the injector cover (A36) and remove with your fingers.
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Tool used on this step:Tweezers$4.99
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Remove the Injector Screen (A37) using your fingers or a pair of tweezers.
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Note: In most cases this part may be gently cleaned rather than replaced.
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Remove Injector Nozzle (A33)
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Using a 1/4" flat blade screwdriver, turn the Injector Nozzle counterclockwise to unscrew.
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Remove Injector Throat (A31)
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Using a 3/16 Flat Blade screwdriver (or iFixit #4 flat blade bit) turn the injector throat counterclockwise to unscrew.
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Using a pair of reverse tweezers, remove the injector throat.
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REASSEMBLY
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To reassemble, insert the injector throat, injector nozzle and injector screen in reverse order of removal.
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Prior to reinstalling the Injector Cover (A36) and reinstalling the screws, apply a layer of silicone grease to the o-ring (A35), this will allow the o-ring to reseal to the valve body properly.
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You have successfully replaced (or cleaned) the Injectors in your Hydrotech 89-series Control Valve.
You may now party on!
