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C4 Manual Rev 7.5.2
parameter F15. Likewise, at the end of a local or remotely controlled program,
chamber blowers will continue to run, but heating and cooling will be disabled.
Note that a chamber in this condition, with blowers running, will exhibit some
heating due to blower air friction. This effect is exaggerated in units equipped
with high velocity blowers. Moving the rotary switch between OFF and LOCAL
will maintain the last used setpoint for the next operation of the controller. See
6.3 for description of auto-start function.
2.1.4 Keyboard
The keyboard consists of 20 momentary contact keys. Certain keys are functional
only in some of the modes of operation. With some keys, such as the Display
Control, the function is different depending on the mode of operation. The
Keyboard is arranged in the following configuration:
123
CLEAR
PROG START
STOP
456
REFER ENTER
789
ADV DISP
TEMP
.0+
-CLEAR
ENTRY DISP
CNTL
CLEAR PROG Clear program from memory
START STOP Start/Stop temperature control
REFER Toggle refrigeration compressor on or off *
ENTER Enter/finalize current keyboard entry
ADV Advance to next program step
DISP TEMP Display temperature
CLEAR ENTRY Clear current keyboard/display entry
DISP CNTL Display control setpoint
* = LOCAL MODE ONLY.