Chapter 6: Optional Controller Features; Total Chlorine; Installation; Required Parts - Blue I HydroGuard HG-302 Manual De Uso

Chapter 6:
6.1

Total Chlorine

The Total Chlorine Controller measures both the Free Available Chlorine (FAC) and the Total Chlorine (TC);
combined chlorine (CC) is calculated. The free chlorine is the active chlorine in the water. When chlorine is
added to water, hypochlorous acid (HOCl) is formed, which is the active agent that actually disinfects the
water. However, its reaction with nitrogen based compounds creates inorganic or organic chloramines, also
known as "combined chlorine".
A high level of combined chlorine may cause excessive chlorine odor, respiratory problems, and eye/skin
irritation. Likewise, chloramines are relatively inactive and therefore do not aid in sanitizing. The most
common way to remove CC is to add a level of chlorine equivalent to 10 times the CC level. Alternatively,
many complimentary sanitizing systems, like UV will lower CC levels while providing additional water
sanitation. Maintaining a low CC level low will provide an overall cleaner and safer system with less
noticeable chlorine odor. Total Chlorine HydroGuard has an alarm for high combined chlorine. This alerts
the operator when treatment is required to lower the CC level.
6.2

Installation

If the controller has been ordered as a total chlorine unit, this section may be skipped. This section is for
upgrading an existing controller to include the Total Chlorine monitoring.

6.2.1 Required Parts

Starting with a complete HG-302 controller, the following components are required to upgrade to
Total Chlorine Control:
•
Reagent Holder (1)
•
Float Switch (1)
•
Peristaltic Pump (1)
•
Pump Tubing (1)
•
Colorimeter Cap with 3 needles (1)
•
Integrated Chips (2)
A diagram of a complete total chlorine controller is presented in Figure 24.
Optional Controller Features
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