Sterling OXY3 Series, Инструкция по установке и руководство пользователя, Страница: 7 / 16

6
How to Change the Length of Backwash Cycles:
All cycles have been factory set and should not need adjustment. If local conditions require different
cycle lengths, however, the following procedures should be followed. The end of the program wheel has been
used for backwash cycles to minimize the amount of time that pressure will be applied to the air draw check
valve.
1. Grasp top left corner of timer assembly and pull to swing timer open and expose the program
wheel.
2. Remove program wheel from timer by squeezing retaining lugs in center of program wheel.
Maneuver program wheel away from micro switch arms and timer assembly.
3. BACKWASH cycle may be lengthened by adding pins to first set of pins on program wheel. Each
pin will equal 2 minutes of backwash time. Ensure that adding pins does not decrease air draw
time.
4. AIR DRAW cycle may be lengthened by increasing the number of holes between the two sets of
pins. Each hole represents 2 minutes of air draw time. The air draw time should only be increased
by moving the backwash pins to an earlier point on the program wheel. Ensure that lengthening
the air draw time does not decrease either the backwash or rapid rinse times.
5. RAPID RINSE cycle may be lengthened by increasing the number of pins at the end of the
program wheel. Each pin represents 2 minutes of rapid rinse time. The rapid rinse time can only
be increased by shifting both the backwash pins and air draw holes an equal number of positions
earlier on the program wheel.
6. Reinstall the program wheel on the retaining lugs by maneuvering past the micro switch arms.
7. Close and latch the timer assembly. Ensure that the retainer snaps into the hole in the backplate
and all electrical wiring is ABOVE the timer post.
FIGURE 4: Back of Timer Assembly