CSI LV-019, Service Manual, Page: 23 / 25

Signature 2 Series
pg. 23
E. To Replace Piston Assembly
1. Follow steps A.1 through A.3.
2. Remove control valve back cover. Disconnect the
meter signal wire from the meter.
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 as furnished 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. Reconnect brine tube and drain line.
11. Return bypass or inlet valving to normal service
position. Water pressure should now be applied to
the conditioner, and any bypass line shut off.
12. Replace the control valve back cover.
13. Follow steps A.9 through A.13.
F. To Replace Seals and Spacers
1. Follow steps A.1 through A.3.
2. Remove the control valve back cover. Disconnect
the meter signal wire from the meter.
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 and replace
seals and spacers.
5. Take piston assembly and push piston into valve
be 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. (Same as E7 – E9?)
6. 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).
7. Replace powerhead mounting screws. Replace
screw and washer at drive yoke.
8. Return bypass or inlet valving to normal service
position. Water pressure should now be applied to
the conditioner, and ay bypass line shut off.
9. Replace the control valve back cover. (Same as
E11 – E13?)
10. Follow steps A.9 through A.13.
G. To Replace Meter
1. Follow steps A.1 through A.3.
2. Remove two screws and clips at bypass valve or
yoke. Pull resin tank away from plumbing
connections.
3. Remove signal wire from meter.
4. Remove two screws and clips at meter and pull the
meter out of the control valve.
5. Apply silicone lubricant to four new O rings and
assemble to four ports on new meter.
6. Assemble meter to control valve. Note: meter
portion of module must be assembled at valve
outlet. Install two screws and clips.
7. Install signal wire into new meter.
8. Push resin tank back to the plumbing connections
and engage meter ports with bypass valve or yoke.
9. Attach two clips and screws at bypass valve or
yoke. Be sure clip legs are firmly engage with lugs.
10. Return bypass or inlet valving to normal service
position. Water pressure should now be applied to
the conditioner, and any bypass line shut off.
11. Check for leaks at all seal areas.
12. Follow steps A.9 through A.13.
H. To Check Drive Motor Operation
1. Remove the control valve back cover.
2. To verify drive motor operation, push service button
located on back of motor. Motor should run.
Release button. After 1 minute, the control should
automatically advance to Rapid Rinse (cycle #4)
position. It will remain in Rapid Rinse for 5 minutes
and then advance to Service position.