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
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:
1 | 2 | 3 | CLEAR | START |
PROG | STOP | |||
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4 | 5 | 6 | REFER | ENTER |
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7 | 8 | 9 | ADV | DISP |
TEMP | ||||
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. | 0 | + | CLEAR | DISP |
- | ENTRY | CNTL | ||
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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.
C4 Manual Rev 7.5.2 | 21 |
