Chromalox MicroTherm CMX Series - Section 3 Temperature Control Operation

9
Section 3 – Temperature Control Operations
Figure 3.1 Control Panel Layout
Status and Diagnostic Indicators
System shuts down if any red diagnostic indicator is
illuminated.
Low Water Pressure:
• System water pressure is below 20 psi.
(Disabled on CMX-180 models)
Pump Overload:
• Pump has drawn too much current.
Over Temperature:
• System temperature has exceeded 260°F.
Most CMX units shipped from 1995 through 2018 will
have been equipped with a Chromalox model 2104
temperature controller. For these units, please refer-
ence the 2104 Quick Info Manual or Instruction Manual
0037-75276 for complete technical details.
For specific controller Set-up Parameters, please refer
Chromalox Manual PQ445-5
Most CMX units shipped from 2019 and onward will
have been equipped with a Chromalox model 4081
(standard controller) or 4082 (advanced controller). For
these units, please reference the 4081 & 4082 Quick
Start Manual, Document PK531 (0037-75563) or In-
struction manual PK532-1 (0037-75562) for complete
technical details.
Below is a list of the most common controller setups,
with additional details available in Appendix C
CMX-250, Contactor – Dwg. 223-123625-053
CMX-275, Contactor – Dwg. 223-123625-052
CMX-250, SCR – Dwg. 223-123625-055
CMX-275, SCR – Dwg. 223-123625-058
CMX-250, Heat-Only – Dwg. 223-123625-057
CMX-275, Heat-Only – Dwg. 223-123625-059
START/STOP Pushbuttons
Press
START
to start the
pump.
Indicator will illuminate while
pump is running. Press
STOP
to stop the pump.
Temperature Control
Actual controller supplied may vary from picture.
Thermal Devices, Inc. Mount Air
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, Mar
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land USA www.thermaldevices.com
Thermal Devices, Inc. Mount Air
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, Mar
y
land USA www.thermaldevices.com