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Thermal Care RA0908 - User Manual

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Installation & Operation Manual
RA Series Temperature Control Unit

Table of Contents

Questions and Answers

  • L
    luisbenderAug 9, 2025
    Why is my Thermal Care RA0908 overheating and overcooling?
    • K
      kevin96Aug 9, 2025
      If your Thermal Care Temperature Controller is alternating between overheating and overcooling, or rapidly cycling from heat to cool, several factors could be at play. First, check the water flow by examining connectors and increasing their size if needed. For systems with many or long hoses, shorten hose runs and maximize hose size to reduce pressure drop. If quick disconnects with check valves are present, remove the check valves to decrease pressure drop. Also, inspect the thermocouple connection and replace it if necessary. Finally, consider replacing the controller if the microprocessor has failed.
  • J
    Jessica SimmonsAug 18, 2025
    What to do if my Thermal Care Temperature Controller is unable to heat properly?
    • S
      Stacy MillerAug 18, 2025
      If your Thermal Care Temperature Controller isn't heating properly, start by checking the solenoid valve. Try flushing it out by adjusting the Set Point up and down several times to open and close it. If that doesn't work, stop the unit, turn off the power and water, and disassemble the solenoid valve for cleaning or replacement. Also, inspect for leaks and replace any faulty valves. Have a qualified electrician verify the functionality of the immersion heater and/or heater contactor, replacing any defective components. Consider replacing the controller if there is a microprocessor controller failure, replacing the thermocouple if it has failed, replacing the heater if it has failed, or replacing the heater contactor if it has failed.
  • C
    Christopher ColemanDec 1, 2025
    How to troubleshoot cooling issues with my Thermal Care RA0908 Temperature Controller?
    • M
      monicairwinDec 1, 2025
      If your Thermal Care Temperature Controller is unable to cool properly, verify that the cooling water supply provides sufficient temperature, volume, and pressure. Check the drain (cooling water return line) for any restrictions that might be preventing proper cooling water flow. If the solenoid valve is inoperative, check the drain (cooling water return line) and see if you can feel or hear a change in the flow as the solenoid valve opens and closes. If you cannot hear or feel the flow it is likely the solenoid valve has failed, so replace it if necessary. For models with a heat exchanger, clean or replace it if it's plugged. If there is high backpressure in the cooling water system, reduce it and contact our Customer Service Department for assistance on selecting a pressure-regulating va...

Summary

Installation

Receiving Inspection

Checks for damage upon delivery.

Rigging, Handling, and Locating Equipment

Guidelines for safely moving and positioning the unit.

Electrical Power

Requirements for power connection and voltage.

Start-Up

Control Panel Operation

Power Button Function

Controls unit power and initiates diagnostic routines.

Start Button Function

Initiates pump operation and the Auto-Vent sequence.

Stop Button Function

Stops pump, sequence, and clears active faults.

Purge Button Function

Enables purging of the mold circuit with compressed air.

Alarm Silence Button

Silences audible alarms and manages remote alarm contacts.

Temperature Set Point Adjustment

Adjusts the desired process temperature using buttons.

Low Pressure Indicator

Indicates low inlet cooling water pressure condition.

High Temp Safety Indicator

Signals when process temperature exceeds safety limits.

Pump Motor Overload Indicator

Over Set Point Indicator

Under Set Point Indicator

Pump On Indicator

Heat Indicator

Cool Indicator

Vent Indicator

Probe Fault Indicator

Changing Temperature Display Scale

Seal Saver Operation

Auto Tune Function

Preventive Maintenance

Once a Week Maintenance

Weekly checks for temperature accuracy and leaks.

Once a Month Maintenance

Troubleshooting

Thermal Care RA0908 Specifications

General IconGeneral
Nominal Capacity9 kW
DisplayDigital
Sensor TypePT100
Enclosure RatingIP54
Power Supply400V, 3-phase, 50Hz

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