Chapter 3 – Operation
TestEquity 1007H Temperature Chamber Page 3-1
Chapter 3 – Operation
Introduction
The Front Panel Switches control power to the chamber. The Front Panel Lights provide
indication of heat and cool functions.
The Limit Controller is a protection device. It turns the chamber OFF if the workspace
temperature exceeds either a high temperature or low temperature limit set point.
The F4T/F4 Controller controls the temperature and humidity in the chamber. It can function as
either a single set point controller or as a programmable profile controller. The F4T/F4
Controller automatically turns the refrigeration system on or off based on the demand for
cooling.
Refer to the separate F4T or F4 Temperature/Humidity Controller manual for details on
how to use the Controller.
! CAUTION: This chamber has a crankcase heater to protect the high-stage compressor. The
chamber must be connected to the power source AND the Main Disconnect
Switch must be ON for 3 hours prior to operating the chamber. Although it
may be safe to use the chamber immediately, this procedure ensures the
longest possible life for the high-stage compressor if the chamber has been
removed from the power source for more than 24 hours.
Summary of Chamber Operation
1. Turn the Main Disconnect Switch ON.
2. Enter the appropriate high and low temperature safety limits on the Limit Controller.
3. Enter the desired set points (or program) on the F4T/F4 Controller.
4. Load your test sample in the chamber.
5. If you are running a controlled humidity condition between +10°C and +85°C, turn the
Humidity button on the F4T controller or Event 2 on the F4 controller ON.
6. If you are running temperature-only conditions or are operating lower than +10°C or higher
than +85°C, turn the Humidity button on the F4T controller or Event 2 on the F4 controller
or the OFF. Humidity cannot be controlled in this range of temperature.
7. Turn the CONDITIONING Switch ON. Alternatively, turn the CONDITIONING Switch to
the EVENT 1 position and turn the Power button on the F4T controller or EVENT 1 on the
F4 controller or ON.
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