Operating instructions

HOW TO SET THE BACKWASH CYCLE PROGRAM:
The backwash cycle program on your fi lter has been factory preset.
However, portions of the cycle or program may be lengthened or
shortened in time to suit local conditions.
To expose cycle program wheel, grasp timer in upper left-hand corner
and pull, releasing snap retainer and swing timer to the right.
To change the backwash cycle program, the program wheel must
be removed. Grasp program wheel and squeeze protruding lugs
towards center, lift program wheel off timer. (Switch arms may
require movement to facilitate removal.)
HOW TO CHANGE THE LENGTH OF
THE BACKWASH TIME:
The program wheel as shown in the drawing is in the service position.
As you look at the numbered side of the program wheel, the group of
pins starting at zero determines the length of time that your unit will
backwash.
FOR EXAMPLE: If there are three pins in this section, the time of
backwash will be six minutes (2 min. per pin). To change the length of
backwash time, add or remove pins as required. The number of pins
times two equals the backwash time in minutes.
HOW TO CHANGE THE LENGTH
OF RAPID RINSE TIME:
The second group of pins on the program wheel determines the length
of time that your fi lter will rapid rinse (2 min. per pin.)
To change the length of rapid rinse, add or remove pins at the higher
numbered end of this cycle as required (See note below). The number
of pins times two equals the rapid rinse time in minutes.
The backwash cycle is complete when the outer micro-switch drops off the last pin in the rapid rinse group of pins. The program
wheel, however, will continue to rotate until the inner micro-switch drops into the notch on the program wheel.
IMPORTANT NOTE
IMPORTANT NOTE
There must always be two empty holes between the backwash & rapid rinse cycles for proper cycle staging.
Return program wheel to timer and return timer to closed position engaging snap retainer in back plate. Make certain all electrical
wires locate above snap retainer post.
HOW TO MANUALLY CYCLE PROGRAM:
Manually cycling control is useful when it is desirous to check control functions. Slowly rotate PROGRAMMING WHEEL counter
clockwise until valve drive motor engages. Release PROGRAM WHEEL until motor STOPS. Control will be in BACKWASH cycle.
Continue rotating wheel repeating above procedure and motor will drive piston to the second (intermediate) position. Repeating
procedure will cause motor to drive piston to RAPID RINSE position. Control may be returned to SERVICE by rotating PROGRAM
WHEEL to HOME POSITION (Micro-switch lever will drop into notch on PROGRAM WHEEL).
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