Pentair 255-742-075-844, Руководство по обслуживанию

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To Advance Regeneration Cycles:
• Press and hold SET - showing current cycle time.
• Simultaneously press SET and UP to advance on cycle. An
hourglass will display while cam is advancing. When cam
reaches next cycle, "C2” will be displayed.
• Repeat SET and UP to advance through each cycle.
• Press and hold SET and UP for 5 seconds to cancel
regen. Hourglass will flash once cancelled. Camshaft will
advance to home – may take 1 to 2 minutes.
Regeneration Cycles:
• C1 – Backwash
• C2 – Regeneration Draw/Slow Rinse (not used in
filter mode)
• C3 – Slow Rinse (not used in filter mode)
• C4 – System Pause (to repressurize tank)
• C5 – Fast Rinse cycle 1
• C6 – Backwash cycle 2
• C7 – Fast Rinse cycle 2
• C8 – Regenerant Refill (not used in filter mode)
Programming For Fa Filter Applications
Sizing FA Filters
Potassium permanganate regenerating iron filters should be
sized for the appropriate backwash and injector sizes.
Backwash Controller
Be sure to choose the appropriate backwash flow rate control
(see Parts section) as recommended by your
media manufacturer.
Injector
Use the same injector size as you would for your conditioner
control tank diameter.
Refill Controller
A FA filter can use the 0.33 gpm refill control that is featured
as standard with a Logix controller. Use a check valve in your
potassium permanganate feeder to prevent overflow.
Initial Resin Volume Setting
Programming for a manganese greensand system requires
a few minor adjustments to the programming to operate
the control correctly. The initial resin volume should be set
to the closest volume of the manganese greensand in the
system. For example, if the system contains two cubic feet of
manganese greensand, program in 2.00 for the resin volume.
"Salt" Setting for KMNO
3
Regenerant
Be sure to set the salt dosage high enough to operate the float
shut-off in the regenerant storage tank.
All other settings will remain the same as mentioned in the
previous programming sections.
Days Between Regeneration Setting (742 FA)
To set the days between regenerations, consult the media
manufacturer for the actual capacity of the media.
In general, manganese greensand has a capacity of 10,000
ppm of removal capability per cubic foot of media. Calculate
the capacity of the system by taking the number of cubic feet
of media and multiply by 10,000.
For example, using a 1 cubic foot system provides 10,000 ppm
of removal capability.
The next step is to calculate the demand for the system. Multiply
the predicted daily water usage by the iron content in ppm.
For example, an average person uses 75 gallons of water per
day. Four people living in a home use 300 gallons of water (75
gallons x 4 people) per day. Assume the incoming water has
10 ppm of iron. Now calculate the daily demand: multiply the
gallons of water used per day (300) by the ppm of iron content
(10) = 3000 ppm of daily capacity usage.
Now take the system capacity (10,000), divided by the daily
demand (3,000) = 3.3 days of capacity. Since you will run out
of capacity before the beginning of the fourth day, the proper
setting for days between regeneration is 3 days.
For example:
4 people x 75 gallons per person = 300 gallons used per day.
10 ppm iron x 300 gal/day = 3000 ppm/day
10,000 ppm capacity ÷ 3000 ppm/day = 3.3 days of total capacity
Solution = regenerate every 3 days.
Volume/Demand Regeneration Setting
To set a 762 demand system for iron removal you must:
1. Know your media capacity. Generally, one cubic foot of
magnesium greensand can remove 10,000 ppm of iron.
2. Know the iron concentration in your water.
To have your system regenerate on demand, set your system’s
capacity (P7) to the appropriate factor. On the 762, it will read
Kg, but you will actually be working in ppm of iron.
Time & Day
Regen Time & Day
Salt Amount
SU MO TU WE TH FR SA DAYS
Capacity
Hardness
KG
Time & Day
Regen Time & Day
Salt Amount
SU MO TU WE TH FR SA DAYS
Capacity
Hardness
1. If your system is one cubic foot, set the capacity to "10" kg,
meaning 10,000. For two cubic feet, set the capacity to
"20" kg.
2. Set your hardness to the level of ppm iron in your water. If
you have 3 ppm of iron, set the 760 control to "3".
3. The control will calculate the remaining volume capacity in
gallons (m
3
) and count down to regeneration.
Advanced Programming
For Regeneration
SET
UP arrow
DOWN
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The 700 Series controllers are designed to operate by only
setting the time of day and the day of the week. The remaining
settings have been set at the factory. These default settings
will work for most applications.
PROGRAMMING CONTINUED
22 • AUTOTROL
742/762 Control 255 & Performa Series Valves (263, 268, 268FA) Service Manual