USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
3
Introduction
Description
A pool operator typically checks and adjusts pool or spa water chemistry hourly at best. The CAT
2000 continuously monitors pH and sanitizer activity, constantly adjusting the feeding of chemicals
on a basis proportional to the demand. The results include elimination of “human error”, accurate
and reliable maintenance of chemical levels twenty-four hours a day, compliance with Health
Department chemistry standards, reduced burden on operating staff, and a reduction of chemical
usage and costs.
The following graph compares typical chlorine levels when chemistry is adjusted manually versus
automatically with the CAT 2000 controller.
What’s Included:
Description
The following is a description of the components incorporated in a typical CAT 2000 controller
system:
The Professional-Series pH Sensor samples water from the filtration system and sends signals to
the controller indicating the acidity of the water. The ideal pH range for pools and spas is 7.4 - 7.6.
The CAT 2000 controller is preset from the factory to maintain pH 7.5. If pH is maintained below
7.4 (too acidic), eye irritation, corrosion of equipment, and damage to the pool or spa surface can
occur. If pH is maintained above 7.6 (too alkaline), sanitizer activity is reduced, water may become
cloudy, and eye irritation may result.
The Professional-Series ORP Sensor samples water from the filtration system and sends signals
to the controller indicating the oxidation-reduction potential (redox) of the water. ORP is an actual
measure of sanitizer activity (chlorine, bromine, ozone, etc.) and bacteriological water quality
rather than an expression of chemical residual levels. The CAT 2000 controller is preset from the
factory to maintain ORP at 650 millivolts.
Manual Control
HCC Automated Control
CL2
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
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12:00
1:00 2:00
3:00
4:00
5:00
Time
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