Service documentation series KB/KBF
BB / JTU 25.06.2000
RD2.1 Calibration Instructions
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Insert the measuring instrument probe at the measuring point, located in the centre of the usable
volume.
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Ventilation flap open or closed (depending upon the user application).
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Set the required nominal temperature.
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Operate the unit until it reaches the required nominal temperature and allow to settle. When the
unit has reached the required temperature, please allow it to continue running for approx. 1 hour -
only then is the unit reliably set for calibration.
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Read off the temperature displayed on your measuring instrument and compare this with the
controller display.
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Any variation can be changed on the controller. To do this, press the start/stop button and stop
the controller. Now press the actual/set value button, the mode button, the arrow up and arrow
down buttons simultaneously. A point will flash in the display. Now you can input the temperature
displayed on your measuring instrument by repeatedly pressing the button “arrow up” or “down”.
Confirm the entry by pressing the actual/set value button. Now press the start/stop button to start
the controller.
Re-check the input temperature with your measuring instrument once the unit has been re-
heated. This adjustment on the controller must be performed rapidly, in order to ensure that any
variation is as small as possible.
Reset of the calibration
To do this, press the start/stop button and stop the controller. Now press the actual/set value
button, the mode button, the arrow up and arrow down buttons simultaneously. A point will flash
on the display. Now you have to press the arrow up and arrow down buttons simultaneously. The
calibration is reset. You can leave the calibration mode with pressing the actual/set value button.
Now press the start/stop button to start the controller.
SM Calibrating instructions
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Switch the unit off at the main switch. Turn the fastening screw of the controller tray (lower centre
of the control panel of the controller) anti-clockwise until you can remove the controller tray.
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The S 301 multiple circuit breaker (large DIP Switch Block) is located on the CPU board. In order
to access the appropriate sub-menu for calibration, DIP switch 2 must be set.
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Push the controller tray back into the housing and turn the fastening screw in the clockwise
direction again.
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Switch on the unit again with the main switch.
Press the ”Pgm” and ”Enter” keys together twice. ”SD01” appears on the display. For calibration
you must call up sub-menu SD06 with ”Pgm” (just press ”Pgm” 6).
SD06 must be confirmed with ”Enter”. C611 appears in the display.
In order ”reset”, you must set C611 to zero. To do this you must use the increase or decrease
button. C612 must also be set to zero. ”Err30” now appears in the display. This symbol indicates
that a ”reset” has been performed.
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Insert the humidity measuring instrument probe at the measuring point, located in the centre of
the usable volume.
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In order to perform a precise calibration, it is essential that the nominal temperature of the device
is reached and remains steady (factory setting 37°C).
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Set the required relative humidity on the SM controller.
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