Dimension One Spas Chairman II Owner's Manual page 42

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1999 Owner's Manual
local Authorized Dimension One Spas dealer if you are having difficulty
adjusting your chlorine level.
The best chlorine for your spa is a granular "Dichlor" compound. It dis-
solves quickly in moving water and has a nearly neutral pH. Add chlo-
rine while the jets are running and let the jet system run for 1/2 hour.
Generally, heavily contaminated water can be disinfected using large
chlorine doses, in the range of 8 - 10 ppm, but a more practical method
is to drain the spa and refill it with fresh water.
The effectiveness of chlorine is decreased when the cover is left off the
spa for two reasons: (1) sunlight decays chlorine rapidly and (2) organic
debris blown into the spa taxes the effectiveness of the chlorine. In
addition, the higher the water temperature, the faster chlorine will
decay.
NOTE: Two individuals in a spa may use as much as 3 ppm of chlorine
in 20 minutes.
S HO CK T R E A T M E N T ( P O T A SS I U M P E R O X Y M ONO S U L F A T E )
Even with regular sanitization, shock treatment may be necessary on
occasion. Shock treatment is recommended over Super Chlorination
because it does not add additional sanitizer to the water. It is also effec-
tive in oxidizing wastes and will reduce chloramines or bromamines.
Follow the manufacturer's instructions listed on the label.
S U P E R C H L O R I N A T I ON
Super chlorination (or chlorine shock treatment), quickly oxidizes the
spa water to burn out wastes such as perspiration, hair spray, lotions, etc.
that cannot be removed by the spa filter. This waste build up reduces
the power of the sanitizer, making the water dull and irritating to the
eyes and skin. It may also produce an odor. When this occurs, the "free"
chlorine has become a "chloramine" which is ineffective for sanitizing.
This can be eliminated by super chlorinating as needed. An application
of 5 times the normal chlorine dosage will act as an adequate treatment.