TC 120
682.98767.00 • 10/04/2018
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Chapter 2: Functional Description
2-1 Introduction
The TC 120 water temperature control units are reliable, accurate, and easy-to-use process
temperature control units. They are self-contained, portable, and shipped ready to use.
The TC 120 water temperature control units are designed to circulate water through your
process and to precisely, automatically, and reliably maintain it at a specified temperature.
Standard unit operating range is from 0ºF (-17ºC) to 250°F (121°C), or up to 300°F (149°C)
as an option. The unit is suited for use with city water, water from portable or central chillers
or towers, or well water.
These units are designed for rapid recirculation of a relatively small amount of water to
provide close and uniform temperature relation between delivery and return lines. This
performance, of course, depends on the configuration of your process and any restrictions
within the mold. The recirculation, combined with the large immersion heater and cooling
capability, gives fast and accurate response to bring the water up to temperature or to changes
in the settings when needed.
The water temperature control unit is a self-contained system consisting of a centrifugal
pump, electric immersion heater, cool/vent solenoid valve, and electrical control, including a
PID microprocessor controller and thermocouple. It is designed for use in process
temperature control applications using water or a water/glycol mix. Any other use or fluid is
prohibited.
Some standard safety devices include a mechanical over-temperature safety thermostat, a
pressure relief valve, motor overload protection, a low pressure cutout switch, branch fusing,
and non-fused lockable rotary disconnect.
A properly installed, operated, and maintained water temperature control system provides
years of reliable operation. Please read and follow the instructions in this manual to get the
most satisfaction from your temperature control system.
2-2 Necessary Documents
The following documents are necessary for the operation, installation, and maintenance of a
TC 120 water temperature control unit. Additional copies are available from ACS Group.
Familiarize the appropriate personnel with these documents:
This manual.
The controller operation manual.
The electrical schematic and connection diagram placed inside the
control enclosure.
The operation and installation manuals for accessories and options
selected by the customer.
The Customer Parts List included in the information packet.