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Ready To Mount Rola-Chem ORP/pH Pool Controller System With One Pump and Solenoid

Price: $1,775.00
Rola-Chem Wall Mount ORP/pH Controller with 32 GPD pump and solenoid

INCLUDES : Programmable Digital pH/ORP Controller complete with Flow Cell, Flow Switch, Sample Valves, ORP and pH Probes, 40' of Black 3/8" Tubing, 100'
Clear 7/16" Tubing and Fittings, one Peristaltic Pump (32 GPD), 120 volt Solenoid Kit (includes Solenoid, In-line filter and Check Valve).
Erosion Feeder NOT included.

General Description

The controller is a microprocessor-based chemical automation system, which continuously monitors and maintains the pH balance in a swimming pool or spa. The pH is displayed using sun-bright light emitting diodes. The pH level is continuously monitored and displayed on the controller’s front panel. The controller has been designed to be user friendly. One MODE button and three SET buttons allow the operator to easily set parameters.

The pH display range is 6.8 to 8.2 with a .1 unit resolution. The pH set point is adjustable from 7.0 to 8.0, with a factory default set point of 7.4 . During a feed cycle, the feed lamp will blink when chemicals are being feed and illuminate continuously during the feed delay portion of the feed cycle. The Alert lamp will flash when the pH reading is higher or lower than the factory set limits for more than 10 minutes and prevent the feeding of pH chemicals.

The feed cycle is a timed based ‘feed then delay’ system. The controller has a series of fixed feed times (0.6 to 900 sec.) with associated delays as well as a constant feed mode (con). A feed cycle consists of a feed time plus a delay time. Example, a 30 second feed time followed by a five-minute delay would have a 5½ minute feed cycle. The chemical feeder dispenses chemical only during the feed time portion of the cycle and then waits for a delay period to allow for chemical to dispense throughout the swimming pool or spa.

Overfeed alert occurs after 120 minutes ‘continuous’ feed and 30 cycles in timed feed mode. Feeders will be disabled and display will flash (requiring reset).

The controller incorporates an internal non-volatile memory in which all factory default settings as well as field-modified settings are stored. The internal memory is not affected by power interruption and requires no backup battery.

The pH output is capable of handling 5 amps at 120 Volt AC. The relay output is fused and transient protected. An internal terminal strip is provided for field wiring of the controller. The internal step-down transformer has a class-two energy limiting rating to provide for electrical safety.


NOTE: When automating any body of water, it is essential to size the feeders to reach desired levels in a relatively short period of time. Generally, automating an existing body of water with existing feeders will require the output of the feeders be increased accordingly. If feeders are unable to keep up with demand in a short period of time, automation becomes ineffective.


Display: pH 6.8 to 8.2

Control: pH 7.0 to 8.0

Factory default: pH 7.4

Input Power

120 Volts AC, 50/60 HZ, 3 wire grounded power cord. GFCI source required.

Output Power

120 Volts AC, 50/60 HZ, 5 amps (fused)

Two 3-wire grounded power receptacles

Terminal strip for hardwire applications.


pH reading -red digital LED

Flow/Power indicator -green LED

Auto (operating mode) indicator -red LED

Alert indicator -red LED

Feed indicator -green LED

(NOTE- lamps flash during feeding and are on constant during delay time of feed cycle.)

Operating Temperature: 40 to 120° F


Features and Options

+ pH setting + pH feed/delay time + alert (high & low)

+ Acid/base feed + calibration + Flow switch input

+ Feed time out + fused outputs


Description of Controls

Modes: The controller has two modes of operation:

                  ON/OFF/Set mode

                  AUTO mode- operating

                  To move from one mode to another simply press the MODE button.

On/off /Set mode:

                  To turn the controller “on”; press the MODE button.

                  To turn the controller “OFF” ; press MODE so Auto light is off and hold the

                  MODE button for two seconds until the pH displays reads “OFF”.

                  Release the MODE button and the controller turns off and the

                  display goes blank.


Note: Turning the controller “OFF” using the MODE button simply turns off the controller functions, but does not turn off the power to the controller. The FLOW lamp is both the power light and a flow indicator when an optional flow switch is used. When Flow light is on and Auto light is off, levels can be set.


Set level button: Pressing the set level button once will display the current set level. To change the set level, press the set level button until the desired level is reached.


Feed time: The feed times are displayed in seconds. Each feed cycle includes a five (5) minute delay time. Pressing the feed time button allows the user to select available feed times. Release the button when the desired feed time is reached.

To set the controller in constant feed, release the button when the display reads “con”.


pH calibrate: This button allows calibration of the pH sensor to a buffer or sample tested with a test kit. Press the pH CALB button to set the pH reading to the desired pH level.


AUTO mode: This is normal operation mode. The controller operates the feeder to automatically maintain the parameters set for pH.



Locating the controller

Install the chemical pump/ feed systems as shown in manuals included with the feeders. Before installing the controller, it is important to do a site assessment to consider where and how you will mount the unit. The controller should be mounted on a wall or other surface within eight feet of the feeder, at least ten feet away from the edge of the water, and within six feet of the GFCI power source. Never mount a controller above or near an acid tank. See appendix for typical feed system schematics.


Mechanical Installation

Once the site is selected, obtain screws or anchors to securely mount the controller on the wall or a panel.  Screw slots are provided in the controller enclosure. Access to flow switch wires, acid/base changes and terminals is located on the back of the enclosure.

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