Watts PWSTA 90-120K - Manual (Page 8)

8
Model 9000/9100/9500
9
Regeneration Cycle Program Setting Procedure
Setting the Regeneration Cycle Program
The Regeneration cycle program on the water conditioner is preset at the factory. However, portions of the cycle or
program time may be lengthened or shortened for local conditions or system design.
1. Expose cycle program wheel by grasping timer in lower right hand corner and pulling. This releases snap
retainer and swings timer to the left
NOTE: Meter cable must be removed from meter dome before opening timer.
2. Remove the program wheel by grasping program wheel and squeezing protruding lugs towards center. Lift
program wheel off timer.
— Switch arms may require movement to facilitate removal.
3. Return timer to closed position by engaging snap retainer in back plate.
— Make certain all electrical wires locate above snap retainer post.
Changing Length of the Backwash Time
The program wheel in Figure 5 is In Service position. Looking at the numbered side of the program wheel, the
group of pins starting at zero determines the length of time the unit backwashes.
Example: If there are six pins in this section, the time of backwash is 12 minutes (2 minutes per pin). To
change the length of backwash time, add or remove pins as required.
— The number of pins multiplied by two equals minutes of backwash.
Changing Length of Brine and Rinse Time
The group of holes between the last pin in the backwash section and the second group of pins determines the
length of time that a unit will brine and rinse (2 minutes per hole).
To change the length of brine and rinse time, add or remove pins in the rapid rinse group of pins to increase or
decrease the number of holes in the brine and rinse section.
— The number of holes multiplied by two equals minutes of brine and rinse.
Changing Length Of Rapid Rinse
The second group of pins on the program wheel determines the length of time the water conditioner rapid rinses (2
minutes per pin). To change the length of rapid rinse time, add or remove pins at the higher numbered end of this
section as required.
— The number of pins multiplied by two equals minutes of rapid rinse.
NOTE: Program wheels with 0–82 minute cycle times, use one minute per pin or hole to set Regeneration
times. The layout of pins and holes on the program wheel follow the same procedure as on this page.
Changing Length of Brine Tank Refill Time
The second group of holes on the program wheel determines the length of time the water conditioner refills the
brine tank (2 minutes per hole).
To change the length of refill time, move the two pins at the end of the second group of holes as required.
The Regeneration cycle is complete when the two pin set at end of the brine tank refill section trips the outer
micro-switch. The program wheel, however, continues to rotate until the inner micro-switch drops into the notch on
the program wheel.