Chapter 3 – Operation
Page 3-2
TestEquity 1016C-1027C Temperature Chamber
Front Panel Switches and Lights
Main Disconnect Switch
The Main Disconnect Switch controls power to the entire chamber and provides a mechanical
safety interlock to the lower door.
In the ON position (clockwise) primary power is connected. The Temperature Controller, Limit
Controller, and (optional) Chart Recorder are always functional when the Main Disconnect
Switch is ON, regardless of the Master Switch position. The Main Disconnect Switch should be
left ON if the chamber is usually used on a daily basis.
In the OFF position (counter clockwise) primary power is disconnected. The Main Disconnect
Switch can be left OFF if the chamber is not used on a daily basis. It can also be locked in the
OFF position with a padlock. The knob has a red insert that can be pushed in at the top to reveal
the lock-hole.
!
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.
CONDITIONING Switch – ON Mode
The CONDITIONING Switch enables all chamber functions. When the CONDITIONING
Switch is OFF, only the Temperature Controller and Limit Controller are operational. When the
CONDITIONING Switch is ON, the chamber’s temperature conditioning system will function to
maintain the temperature set point. The CONDITIONING Switch does NOT illuminate in any
position.
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 Controller or Event 1 (Digital Output 1)
of the F4 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.
