
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
3
What’s Included
Description
The following is a description of the components incorporated in a typical HCC 4000 wireless water 
quality control 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 HCC 4000 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 HCC 4000 controller is preset from the factory 
to maintain ORP at 650 millivolts.
The Flow Sensor monitors the rate of flow across the pH and ORP sensors and signals the control-
ler to disable automated chemical feeding during periods when the filtration system is off or low 
recirculation flow is detected.
The Flow Cell provides a convenient location for mounting the pH, ORP and Flow sensors while 
ensuring ideal hydraulic conditions to maximize sensor performance and life.
The HCC 4000 Controller scans and interprets the signals from the pH, ORP, flow, and optional 
digital flow-rate and level sensors, displays water quality readings and alarms in alphanumeric 
format, and activates chemical feeders in proportion to demand to maintain pH and ORP setpoint 
levels.
The controller incorporates audible and visual safeguard alarms for out of range conditions and 
menu-driven control of setpoints, alarms, and a host of advanced features. The HCC 4000 control-
ler also features an internal transceiver for wireless transmission of data between the controller 
and POOLCOMM website.
The Level Sensors (optional) provide signals to the controller indicating low pH chemical tank level, 
low ORP tank level, and low water level.
The Digital Flow Sensor (optional) provides a flow rate to be displayed by the controller and an 
alarm indication when filter maintenance is required.
Package Contents:
(1) HCC 4000 Wireless Water Quality Controller
(1) PVC Backboard with Mounting Holes and Stainless Hardware
(1) Professional Series pH Sensor with 24” Cable and BNC Connector
(1) Professional Series ORP Sensor with 24” Cable and BNC Connector
(2) Sensor Storage Containers
(1) Injection Molded Flow Cell