255 datasheet(7/20 Pages) PENTAIR

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Programming

1. Set days of regeneration on skipper wheel (Figure 11).

• Pull all skipper pins outward (away from control).

• Rotate skipper wheel until day arrow points to current

day or number 1.

• Depress skipper pin(s) at day(s) for which regeneration

is desired.

2. Set the time of day.

• Grasp timer knob and pull outward.

• Rotate in either direction until the timer arrow points to

the actual time of day.

• Release timer knob.

NotE:

With the time of day properly set, the conditioner will

regenerate at about 2:30 a.m. If you prefer to have the

unit regenerate at an earlier or later time, simply set

current time-of-day accordingly (e.g., to have the unit

regenerate at 4:30 a.m.—two hours later—set the

clock two hours earlier than the actual time of day.)

NotE:

the timer locking Pin should always be horizontal

(Figure 11) during operation.

460i Control

Transformer

Plug Receptacle

hour Time Display

Access Door

Water Flow Indicator

Time Set button

Raised Tab

Indicator knob

Timer

Locking Pin

PM Indicator

Spare Jumper

Jumper

Figure 11

Programming

Plug the wall-mount transformer into a functioning electrical

outlet that is not controlled by a switch. Plug the transformer

into the transformer plug receptacle on the control.

Open the access door by pushing the raised tab on the door

toward the left while pulling the tab out (Figure 12).

time of Day Setting

With the jumper on the set of pins next to the word TIME

(Figure 13), set the time of day to the closest hour by pressing

the black TIME SET button. PM hours are indicated by a light

next to the letters PM on the display window.

NotE:

the use of a small needle-nose pliers will aid in

moving the jumper.

NotE:

the unit is factory set to regenerate at 2:00 a.m. If

you prefer to have the unit regenerate at an earlier

or later time, simply set the current time of day

accordingly (e.g., to have the unit regenerate at 4:00

a.m.—two hours later—set the clock two hours

earlier than the actual time of day).

NotE:

the timer locking Pin should always be horizontal

(Figure 12) during operation.

Hardness Setting

Move the jumper to the set of pins next to the word hARDNESS

(Figure 14). Press the black TIME SET button until the

hardness of the incoming water supply is displayed. The

hardness range is from 1 to 99 grains per gallon.

To change water hardness stated in parts per million (PPM) to

grains per gallon (GPG) use this formula:

Parts per Million

= Grains Per Gallon

17.1

Figure 12

Figure 13

Figure 14

Capacity Setting

Move the jumper to the set of pins next to the word CAPACITY

(Figure 15). Press the black TIME SET button until the correct

capacity value is displayed. The capacity range is 1 to 99

kilograins. Refer to the Suggested Salt Dial Settings table.

Return the jumper to the top set of pins next to the word TIME

and replace the access door. The jumper must NOT be left

on any pins other than the top pair next to the word TIME.

Otherwise, the unit may show a blank display.

NotE:

A spare jumper is located on the bottom set of pins.

In the event that the hardness or capacity setting

must be changed, simply follow the appropriate steps

described above.

Calendar override Setting

1. Disconnect power.

2. Place jumper on Pin A and reconnect power.

3. Move jumper to Pin b. A zero will appear, indicating

zero days of calendar override. All 460i controllers are

preprogrammed in this manner at the manufacturer.

4. Depress the black TIME SET button. The numbers will roll

from “0” to “15.” Release the switch at the desired number

of days for the calendar override. For example, releasing

the switch at “10” would program a 10-day

calendar override.

5. Disconnect power.

6. Place jumper back on TIME and reconnect power.

7. The calendar override program is maintained during power

outages by the NOVRAM circuitry.

8. To remove the calendar override, follow the same steps

above and program back to “0.”

ProGrAMMING continued

Autotrol® 255 Valve/400 Series Service Manual • 7

255 Datasheet(PDF) 7 Page - Pentair plc. All rights reserved.

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