Disinfection Of Water Conditioning Systems
The materials of construction in the modern water
conditioning system will not support bacterial growth, nor will
these materials contaminate a water supply. During normal
use, a conditioner may become fouled with organic matter, or
in some cases with bacteria from the water supply. This may
result in an off-taste or odor in the water.
Some conditioners may need to be disinfected after
installation and some conditioners will require periodic
disinfection during their normal life. Depending upon the
conditions of use, the style of conditioner, the type of ion
exchanger, and the disinfectant available, a choice can be
made among the following methods:
Sodium or Calcium Hypochlorite
These materials are satisfactory for use with polystyrene
resins, synthetic gel zeolite, and bentonites.
5.25% Sodium Hypochlorite
These solutions are generally known as household bleach.
If stronger solutions are used, such as those sold for
commercial laundries, adjust the dosage accordingly.
1. Dosage
•
Polystyrene resin; 1.2 fluid ounce (35.5 mL) per cubic
foot.
•
Non-resinous exchangers; 0.8 fluid ounce (23.7 mL) per
cubic foot.
2. Regenerant tank conditioners
A. Backwash the conditioner and add the required amount
of hypochlorite solution to the well of the regenerant
tank. The regenerant tank should have water in it to
permit the solution to be carried into the conditioner.
B. Proceed with the normal regeneration.
Calcium Hypochlorite
Calcium hypochlorite, 70% available chlorine, is available in
several forms including tablets and granules. These solid
materials may be used directly without dissolving before use.
1. Dosage
A. Two grains (approximately 0.1 ounce (3 mL) per cubic
foot.
2. Regenerant tank conditioners
A. Backwash the conditioner and add the required amount
of hypochlorite to the well of the regenerant tank. The
regenerant tank should have water in it to permit the
chlorine solution to be carried into the conditioner.
B. Proceed with the normal regeneration.
SERVICE AND MAINTENANCE
CONTINUED
28
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AUTOTROL
®
Logix 764 Control Performa Cv Series Valves (273, 278) Service Manual
