Chapter 3 – Operation
Page 3-2
TestEquity 123C Temperature Chamber
Front Panel Switches and Lights
Power Switch
The Power Switch controls power to the entire chamber. The Power Switch illuminates when it
is ON.
Conditioning Switch – ON Mode
The Conditioning Switch enables all chamber functions. When the Conditioning Switch is OFF
and the Power switch is ON, only the Temperature Controller and Limit Controller are
operational. When both the Power and Conditioning Switches are ON, the chamber’s
conditioning system will function to maintain the temperature set point. The Conditioning
Switch does not illuminate.
Conditioning Switch – Event 1 Mode
When the CONDITIONING Switch is in the EVENT 1 position, you can enable and disable all
chamber functions through the Power button on the F4T Temperature Controller or Event 1
(Digital Output 1) of the F4 Temperature Controller.
Light Switch
The Light Switch controls the workspace light. The Light Switch illuminates when it is ON.
HEAT Light
The HEAT Light will illuminate when the Temperature Controller turns on the heater to
maintain the workspace temperature. The HEAT Light will cycle on/off as the workspace
temperature approaches and reaches the temperature set point.
COOL Light
The COOL Light will illuminate when the Temperature Controller turns on the cooling valve to
maintain the workspace temperature. The COOL Light will cycle on/off as the workspace
temperature approaches and reaches the temperature set point.
