Autopilot Pool Pilot Digital Nano+ Owner's Manual page 55

IDEAL
CHEMICAL TEST
SCHEDULE
Calcium Monthly
Hardness
Cyanuric Acid Monthly
(CYA or
Stabilizer)
Saturation Monthly
Index
Salt Monthly
EFFECT OF
LOW / HIGH LEVELS
Low CH: Etching of plaster, equipment
corrosion
High CH: Scale formation, cloudy water.
Rapid buildup of scale may exceed the
system's self-cleaning capability and require
manual cleaning of the cell.
Low CYA: Destruction of chlorine by the UV
rays from the sun.
High CYA: Requires more chlorine to
maintain proper sanitizer levels. Note: CYA
not needed for indoor pools or bromine
pools. CYA can be reduced to 30 - 50 ppm
(mg/L) for colder climate regions.
+ 0.3: Water is scale forming. Calcium
carbonate is falling out of solution.
This rapid buildup of scale may exceed the
system's self-cleaning capability and require
manual cleaning of the cell.
- 0.3: Water is corrosive. Water will take
away other material it comes in contact with
to form a natural balance. These materials
can be metallic fixtures, swimwear, etc.
Results can also include cloudy water,
eye/skin irritation, and poor chlorine
effectiveness.
Low Salt: Below 2,400 ppm (mg/L) causes
premature cell failure and reduces chlorine
production
High Salt: Above 6,000 ppm (mg/L) can
cause corrosion of metallic fixtures and will
taste salty. Note: Digital Nano/Nano+ can
safely operate with salt levels up to 35,000
ppm (mg/L).
CORRECTIVE ACTIONS
Low CH: Add calcium chloride flakes.
High CH: Partially drain and refill pool with
fresh water to dilute. (Diluting will reduce salt
and CYA. Check and adjust as needed.)
Low CYA: Add Cyanuric acid
(1 lb.(0.45 kg) per 5,000 gallons (18,930
liters) increases CYA 25 ppm (mg/L))
High CYA: Partially drain and refill pool with
fresh water to dilute. (Diluting will reduce
salt. Check and adjust as needed.)
Balance water as close to equilibrium of 0 as
possible. See "Basic Water Chemistry" on
page 51 for more information.
Balance water as close to equilibrium of 0 as
possible. See "Using the Saturation Index"
on page 51 for more information.
Low Salt: Add salt according to digital display
®
on Pool Pilot unit or salt chart.
High Salt: If undesirably high, partially drain
and refill the pool with fresh water. (Diluting
will reduce CYA. Check and adjust as
needed.)
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