Line Voltage Calibration; Humidifier Calibration - GE Giraffe Service Manual

Chapter 3: Calibration and Maintenance
10. Dial in the Mains voltage using the control knob. Press the knob to enter the value.
11. After a few seconds the dots will stop moving across the screen and DONE will appear on the top right of
the display. Do not shut off the unit until the DONE message is displayed or the new calibration values will
not be stored.
If the message "Mains voltage calibration failed. Please enter the mains voltage again" appears this
indicates the dialed in line voltage is 20% different than the measured value (not the nominal value).
12. Power down the unit and move the calibrate jumper to the NORMAL MODE position. Be sure to orient the
jumper correctly so pins 1-2 and 3-4 are shorted.
System and line voltage calibration are complete.
13. Proceed to humidifier calibration.

3.4 Line Voltage Calibration

IMPORTANT: Be sure to perform line voltage calibration after replacing a relay board.
1. Hold the override button (>37) while powering up the unit to enter the service screen.
2. On the second service screen select CAL LV.
3. Measure the line voltage at the AC connectors located at the bottom of the electrical enclosure.
4. On the CAL LV screen, dial in the mains voltage value that you measured and push the knob to enter it.
5. When calibration is completed screen will say Mains Voltage Calibration Complete.
If the message "Mains voltage calibration failed. Please enter the mains voltage again" appears this indicates
the dialed in line voltage is 20% different than the measured value (not the nominal value).

3.5 Humidifier Calibration

IMPORTANT: Be sure to re-calibrate the humidifier whenever either the sensor or the control board is replaced.
IMPORTANT: In order for the water in the calibration bottle to be completely saturated, most of the salt should
not be dissolved. There should be as little standing water above the salt line as possible to minimize the
response time. The salt in the calibration bottle may only be used for a period of one year after its initial mix
with water then the kit should be discarded.
22
6600-0356-000 103
© 2001 by Datex-Ohmeda, Inc.. All rights reserved.