SIGNATURE 2 SERIES
Service Instructions / Instructional Videos Available at www.csiwater.com
A. General Preliminary Instructions
PERFORM BEFORE ALL SERVICING OPERATIONS
1. Turn off water supply to Reactr.
-If the filter installation has a “three valve” bypass system, first open the valve in the
bypass line, then close the valves at the filter inlet and outlet.
-If the filter has an integral bypass valve, put it in the bypass position.
-If there is only a shut off valve near the filter inlet, close it.
2. Remove cover and relieve water pressure in the conditioner by stepping the control into the
backwash position momentarily. Return the control to the service position.
3. Unplug electrical cord from outlet.
B. To Replace Powerhead
1. Remove the control valve cover and disconnect the power supply.
2. If a 9-volt battery is hooked up, remove the battery and install with the new power head
3. Remove screw and washer at drive yoke. Remove powerhead mounting screws. The entire power-
head assembly will now lift off easily.
4. Put new powerhead on top of the valve. Be sure the drive pin on main gear engages slot in
drive yoke (wide side of drive yoke upright must face to the left away from the motor).
5. Replace powerhead mounting screws. Replace screw and washer at drive yoke.
6. Reconnect power supply.
7. Reinstall cover.
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C. To Replace Piston Assembly
1. Follow steps A1 - A3
2. Remove control valve back cover.
3. Remove screw and washer at drive yoke. Remove powerhead mounting screws. The entire powerhead
assembly will now lift off easily.
4. Remove piston retaining plate screws.
5. Pull upward on end of piston yoke until assembly is out of valve.
6. Inspect the inside of the valve to make sure that all spacers and seals are in place, and that there is no foreign
matter that would interfere with the valve operation.
7. Take new piston assembly and push piston into valve by means of the end plug. Twist drive yoke carefully in a
clockwise direction to properly align it with drive gear. Reinstall piston retaining plate screws.
8. Place powerhead on top of valve. Be sure drive pin on main gear engages slot in drive yoke (wide side of drive
yoke upright must face to the left away from the motor).
9. Replace powerhead mounting screws. Replace screw and washer at drive yoke.
10. Follow steps D9 - D14.
D. To Replace Seals and Spacers
1. Follow steps A1 - A3.
2. Remove the control valve cover.
3. Remove screw and washer at drive yoke. Remove powerhead mounting screws. The entire powerhead
assembly will now lift off easily. Remove piston retaining plate screws.
4. Pull upward on end of piston rod yoke until assembly is out of valve. Remove seals and spacers. (Note: Special
end spacer must be reused)
5. Lubricate new seals with silicone lubricant included in the seal and spacer kit. Make sure the special end
spacer is properly seated in the valve body. Install new seals and spacers individually, pressing around the
outer edge of each seal to make sure it is seated. (When all seals and spacers are seated properly, you will
have a 1/4” of space between the top seal the the top of the valve body)
6. Follow Steps E7 - E10.
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