1
Section 1 – Getting Started
Installation Instructions
Read and understand all instructions in this
user’s manual and the associated temperature
control instruction manual before attempting
to install or operate system.
Introduction
Congratulations on purchasing the Chromalox CMX
Series microTHERM™ Temperature Control System.
This system has been thoroughly engineered, carefully
built, and fully tested to assure years of service.
The CMX can be operated at a maximum tempera-
ture of 250°F at a minimum pressure of 30psi. CMX-
180 models do not require minimum pressure. Water
temperature is maintained by a microprocessor-based
temperature controller which applies heating and cool-
ing as needed. Heat is applied by a long-life, INCOLY
®
sheathed heater. Cooling is either via direct injection, in
an open loop, or through a closed loop heat exchanger.
Every system is equipped with an automatic vent that
removes unwanted air from the system during opera-
tion, and an ASME pressure relief valve that is factory-
set to 125 psi (150 psi with 7.5 hp motor.) A pressure
switch ensures adequate water pressure in the system
to help prevent pump cavitation and steam buildup on
the heater elements, which can shorten the lives of the
heater and pump. The switch is factory-set to 20 psi.
This switch is not included on CMX-180 models.
Electrical and hydraulic components are located in
distinctly separate areas in the system to better man-
age heat buildup and prevent component damage.
The pump housing, heater, and cooling chambers are
single cast pieces, designed to drastically reduce the
chance of leaks and provide ease of service and main-
tenance. Standard casters make it easy to move the
system from machine to machine.
Power requirements for the system are 240 or 480
volts, 3 phase, 60 cycle, and 4.5 to 24 kW. See the sys-
tem nameplate for the appropriate voltage and wattage
ratings.
The System Photo and Control Panel Illustrations, on
the following pages, show the CMX and identifies all
key components.
Thermal Devices, Inc. Mount Airy, Maryland USA www.thermaldevices.com
Thermal Devices, Inc. Mount Airy, Maryland USA www.thermaldevices.com