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Pentair IntelliChlor IC20 User Manual

Pentair IntelliChlor IC20
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11
IntelliChlor User’s Guide
Electrolytic Cell Cleaning
1. Automatic Cleaning. This unit has an automatic cell-cleaning feature (Cell Reversing) that removes
scale deposits from the electrolytic cell. Note Automatic Cleaning does not interrupt Chlorine
Production. “Scale” is a white crusty deposit that forms in excessively hard water or from pool water
that is out of balance and in a scaling condition. If the cell shows excessive scaling, you need to
perform an acid wash cleaning. Proceed to “Acid Wash Cleaning,” Step 2.
2. Acid Wash Cleaning. If the electrolytic cell has a tendency to scale, it is recommended that every two
months the cell be removed and inspected for scale formation and/or debris. Some filters allow debris
to pass through to the cell, possibly lodging between the plates in the cell. A small amount of scale
formation is normal. If by looking through the cell it is observed that there is excessive scale formation
between the plates or debris is present, the cell must be cleaned as follows:
a. Use a high-pressure jet of water from a garden hose. If the cell cannot be reasonably cleaned in this
manner, acid cleaning is necessary.
b. To acid clean the cell: Mix 0.95 liters (one
quart) of muriatic acid with 3.79 liters (one
gallon) of tap water in a plastic bucket.
Note: The IntelliChlor acid cleaning kit (P/N
520670) provides a cap for the IntelliChlor
unit to allow acid to be poured into the
electrolytic cell plates for cleaning.
c. Place the cell vertically in a 18.93 liters (five gallon) bucket. Pour the acid solution (as described
above) into the cell until the blades are just covered. Allow the acid solution to bubble, and to clean
the blades. The acid should only be contained in the cell and not around it. A foaming action will begin,
which is caused by scale (calcium carbonate) being dissolved from the plates. If rigorous foaming
action does not begin, the cell does not need to be cleaned (STOP THE CLEANING PROCESS - go
on to step “d”). Otherwise, allow the cell to remain in the solution until the foaming has stopped.
However, do not leave in acid for more than 1/2 hour. Excessive Acid Washing will damage
electrolytic cell.
d. Remove the cell from the bucket and place in an empty 18.93 liters (five gallon) bucket. Rinse the
cell thoroughly with clean tap water and inspect. If deposits are still visible, immerse the cell again in
the solution for further cleaning. Additional acid may need to be added to the solution.
e. Rinse the cell again with clean tap water and inspect. If clean, replace the cell and resume normal
operation.
f. If the acid wash procedure is necessary, it is recommended that a sample of pool water be analyzed by
an authorized IntelliChlor service representative for excessive hardness and/or improper water
balance.
g. If no scale or debris deposits are observed in the cell after two bimonthly inspections, it is not
necessary to continue bimonthly inspections. However, due to possible changes in pool water
chemistry and filtering effectiveness, it is recommended that the cell be removed for inspection at
least twice a year.
Winterizing
Very little chlorine is needed in cold water. Below 15° C (59° F), chlorine production is stopped; the unit will
produce chlorine. This low-temperature cut-off extends the life of the cell. If preventative measures are not
taken, freezing water may cause severe damage to the cell. Prevent freeze damage to the cell by running the
pool pump continuously or winterize the pool by draining water from pump, filter, and all intake and return
lines. Remove the cell, clean and store it.
WARNING
Working with muriatic acid can be dangerous.
When cleaning elements always wear rubber
gloves and eye protection. Always add acid to
water, do not add water to acid. Always work in a
well-ventilated area.
Splashing or spilling acid can
cause severe personal injury and/or property
damage.

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Pentair IntelliChlor IC20 Specifications

General IconGeneral
ModelIntelliChlor IC20
TypeSalt Chlorine Generator
Pool SizeUp to 20, 000 gallons
Voltage120/240 VAC
Power SupplyExternal Power Center
Flow RateMinimum 20 GPM
Water Temperature50°F to 104°F (10°C to 40°C)
Cell Life10, 000 hours
Warranty3 years
Chlorine Output0.7 lbs/day

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