Ozone - HotSpring Vista Owner's Manual

• The Usage Time is simply the amount of time a user spends in the spa.
• Sanitizer Needed is the amount of Free Available Chlorine needed to accommodate the number of users and their combined usage time.
For example, two spa users who regularly use the spa once an evening for twenty minutes create a specific and somewhat consistent
demand on the sanitizer. During the first month of ownership, these two users can determine exactly how much sanitizer to use in order
to maintain the proper residual. If, at any time, the user load and/or usage pattern changes dramatically (invited guests), the amount and
frequency of sanitizer required increases dramatically.
The greater the usage time, or the bather load, the faster the residual value is diminished.
SUPPleMeNTAl WATeR MAINTeNANCe
Proper water sanitation and mineral balance (pH control) are absolutely essential for a complete spa water maintenance program. Here
are three other popular water additives that are optional:
Mineral deposit Inhibitors
As water evaporates from your spa and new water is added, the amount of dissolved minerals will increase. (Minimize evaporation by
keeping the cover on the spa whenever possible.) The spa water may eventually become "hard" (Calcium Hardness too high) enough to
damage the heater by calcifying its surface. Proper pH control can minimize this.
Normal soap build-up will require water replacement regularly enough that mineral deposits normally are not a problem.
Occasionally, high iron or copper content in the water may produce green or brown stains on the spa. A stain and scale inhibitor may
help to reduce these metals.
NOTe: Well water may contain high concentrations of minerals. The use of a low water volume, extra-fine pore water filter (in-line pre-
filter such as the FreshStart
can be purchased at your local Hot Spring
foam Inhibitors
Spa water requires changing due to the buildup of soap in the water. Typically, soap will cause the spa water to foam when the jets
are used. Soap is introduced into the spa water from two sources: users' bodies, which retain a soap residual after showering, and
swimming apparel, which retains soap after washing.
Foam inhibitors can suppress foam, but cannot remove soap from the water. Soap is very difficult to remove from the water because
soap is not oxidized by any chemical added to the spa. Only ozone can oxidize soap.
Eventually the soap build-up in the water will be concentrated, resulting in an unclean feeling on the bather's skin, which is impossible
to remedy. When this occurs, it's time to drain and refill the spa. Depending on the soap input, the water should last about four months
before needing to be drained.

OZONe

®
The FreshWater III ozone system utilizes Corona Discharge (CD) technology to produce a higher concentration of ozone than is
produced by competing ultraviolet light (UV) ozone systems.
The under-the-skirt mounted FreshWater III high output ozone system unit offers less-visible installation and is less susceptible to the
effects of freezing temperatures. To access it for inspection, remove the equipment compartment door to check the unit operation (this is
usually done prior to disconnecting the power to the spa before draining). Simply listen for the buzz of the transformer to verify operation
of the FreshWater III high output ozone system .
The Hot Spring spa FreshWater III high output ozone system greatly enhances the quality of the spa water when used to supplement
the spa owner's regular water maintenance program. Contrary to some information circulated throughout the pool and spa industry
regarding ozone systems, ozone CAN NOT be used as a single-source sanitizer, water clarifier, anti-foamer, and mineral chelating
agent. A secondary source sanitizer must be used to maintain 2.0 ppm (2.0 mg/L) of Free Available Chlorine (FAC). Watkins
Manufacturing Corporation recommends that a chemical maintenance program based on recognized and documented industry
standards still be followed when using an ozone purification system to assure water sanitation and the highest quality purified water.
NOTe: Not applicable when using the AutoFresh
Cleaning the Ozone Injector
On occasion, a mineral build-up may clog the ozone injector, causing a lack of flow or low flow, of ozone bubbles. To prevent this, refer
to the following instructions to clean the injector:
1. Disconnect power to the spa.
2. Access the equipment compartment.
3. Locate the ozonator in the equipment compartment.
water Quality and maintenance
®
pre-filter) will help to remove many of the larger particles during the filling of the spa. In-line pre-filters
10,000
®
dealer.
®
water care system.
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