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Summary of Contents for Thermal Care RA Series
- Page 1 Installation & Operation Manual RA Series Temperature Control Unit...
- Page 2 Page Intentionally Blank...
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Page 3: Table Of Contents
Table of Contents Foreword ..................................... 1 Installation ..................................1 Receiving Inspection ................................1 Rigging, Handling, and Locating Equipment..........................1 Electrical Power ..................................1 Table 1 - Voltage Utilization Range ............................ 1 Process Connections ................................2 Start-Up ....................................3 Control Panel Operation ..............................4 Table 2 - Microprocessor Control Fault Logic ........................ - Page 4 Crash Cool ..................................... 13 Preventive Maintenance ..............................14 Once a Week ..................................14 Once a Month ..................................14 Troubleshooting ................................15 Charts & Pump Curves ............................... 16 Table 5 –Single-Zone Unit Electrical Specifications ......................16 Table 6 – Dual Zone Unit Electrical Specifications......................17 Figure 1 –...
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Page 5: Foreword
Foreword The intent of this manual is to serve as a guide for placing your temperature control unit in service and operating and maintaining it properly. This manual is supplemented as required to accommodate any special items that may have been provided for a specific application. -
Page 6: Process Connections
If the measured voltage on any leg is not within the specified range, notify the supplier and correct before operating the unit. Voltage imbalance must not exceed two percent. Excessive voltage imbalance between the phases of a three-phase system can cause motors to overheat and eventually fail. Voltage imbalance is determined using the following calculations: % Imbalance = (V –... -
Page 7: Start-Up
Start-Up Every unit is factory set to deliver temperature controlled water in accordance with the standard operating specifications for that particular unit. Due to variables involved with different applications and different installations, minor adjustments may be required during the initial start-up to ensure proper operation. The following start-up procedure should be followed in sequence. -
Page 8: Control Panel Operation
Control Panel Operation The temperature control unit includes a microprocessor controller designed to perform all control functions directly from the front panel. When a button is pressed, a click will be felt and the corresponding LED will be energized. The table shown below provides the basic control fault logic for the microprocessor controller. Table 2 - Microprocessor Control Fault Logic Alarm Manual... -
Page 9: Power
Power Depressing the Power button will switch the control power on or off. When the Power button is pushed the microprocessor initiates a diagnostic routine to determine if a brownout has occurred. The Power button must be pushed to initiate control power before either the Start button or remote on/off contacts can start the unit. -
Page 10: High Temp Safety
High Temp Safety The High Temp Safety LED will be illuminated if the To Process temperature exceeds 260°F (127°C). The High Water Temperature LED will turn off when the water temperature is less than 260°F (127°C). This fault will stop operation of the unit. -
Page 11: Probe Fault
Probe Fault The Probe Fault LED will illuminate if the signal from the thermocouple is out of tolerance. This fault will also shut off the compressor and the pump. Pressing the Alarm Reset button will reset this alarm. Changing Temperature Display Scale This unit was shipped to display temperatures in either °F or °C. - Page 12 The Auto Tune function is designed to automatically select the best control parameters based upon the particular system that the unit is connected to. At the factory, certain parameters have been limited so that the Auto Tune program cannot select values that could cause damage to certain components. The following procedure should be followed if there is a need for the Auto Tune program to be run.
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Page 13: Diagnostic Error Codes
Diagnostic Error Codes Several different error codes may be displayed on the digital readouts labeled To Process and Set Point. Most of the possible error codes indicate some type of failure in the microprocessor controller. Below is a list of the error codes. If there are any error codes other than the one listed below, try to reset the unit by shutting the power off and then turning it back on. -
Page 14: Control Options
Control Options Return Water Temperature Display This option allows the To Process digital display to indicate To Process or Return Water temperatures. To view the Return Water temperature, hold down the Lower Set Point Temperature and Raise Set Point Temperature buttons simultaneously. Once the buttons are released, the display will return to the To Process temperature. -
Page 15: Operation
Note: All DIP switch changes must be made with power disconnected. In order to activate the SPI protocol, DIP switch #8 must be set to the "On" position. To deactivate the SPI communication, set DIP switch #8 to the "Off" position. If more than one piece of equipment is going to be on the same communications network, the base address will have to be changed so that each unit has a unique address. -
Page 16: Construction
Construction Pump Assembly The centrifugal close-coupled pump features a specially designed cast volute to eliminate fittings and provide easy connection to the heater and/or mixing tubes. The pump volute is constructed of cast iron. The ¾ through 2 HP pumps have stainless steel impellers and pump shafts. -
Page 17: Standard Options
Service Department for further information. Stacking Bracket Kit (RA & RB series) RA Series units can be stacked to minimize floor space requirements. A stacking bracket kit can be used to allow one unit to be placed on top of another. -
Page 18: Preventive Maintenance
Preventive Maintenance Once the unit has been placed into service, the following maintenance procedures should be adhered to as closely as possible. The importance of a properly established preventive maintenance program cannot be overemphasized. Taking the time to follow these simple procedures will result in substantially reduced downtime, reduced repair costs, and an extended useful lifetime for the unit. -
Page 19: Troubleshooting
Troubleshooting Problem Possible Cause Remedy Alternating overheating Check connectors and increase size if necessary. If there are a large number of and overcooling or rapid hoses and/or they are long, try to short hose runs and use as large of a hose as cycling from heat to cool Poor water flow possible to minimize water circuit pressure drop. -
Page 20: Charts & Pump Curves
Charts & Pump Curves Table 5 –Single-Zone Unit Electrical Specifications Heater(s) Pump Unit MCA Model FLA Each (3-phase, 60 Hz) FLA Each (3-phase, 60 Hz) Amps (3-phase, 60 Hz) 208V 230V 460V 575V 208V 230V 460V 575V 208V 230V 460V 575V RA0908 24.9... - Page 21 Table 6 – Dual Zone Unit Electrical Specifications Heaters Pumps Unit MCA Model FLA Each (3-phase, 60 Hz) FLA Each (3-phase, 60 Hz) Amps (3-phase, 60 Hz) 208V 230V 460V 575V 208V 230V 460V 575V 208V 230V 460V 575V RAD0908 24.9 22.6 11.3...
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Page 22: Drawings
Figure 1 – RA, RAD, RB, RBD Series Pump Curves RA, RAD, RB, RBD Series 60 Hertz Pump curves 7½ HP 5 HP 3B HP 3A HP 2 HP 1 HP ¾ HP 100 110 120 130 Flow (GPM) 3500 RPM pum ps. Curve represents pum p discharge. Correct for unit discharge. Drawings A set of drawings is provided with the unit. -
Page 23: Warranty
Thermal Care's obligation is limited to repair (i.e. rewind a motor) or replacement (not adjustment or maintenance), F.O.B. the factory of any parts supplied by Thermal Care within a period as shown below from the date of shipment to the original purchaser. - Page 24 New Equipment Sales Customer Service Parts 5680 W Jarvis Ave Phone (847) 966-2260 Phone (847) 966-2636 Phone (847) 966-8560 Niles, IL 60714 (847) 966-9358 (847) 966-2906 (847) 966-6065 www.thermalcare.com Email info@thermalcare.com Email service@thermalcare.com Email tcparts@thermalcare.com RA Series IOM 7-302.18 March 2016 2012...
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