Calibrating The Pressure Transducer - Waeco AirCon Service Center VAS 581 001A Operating Manual

Service tasks
9.5

Calibrating the pressure transducer

I
NOTE
The pressure transducer has to be correctly calibrated in order to make
accurate pressure measurements.
Calibration is required:
 Every four weeks
 If the AirConServiceCenter has been subjected to heavy shaking
 Every time the vacuum pump oil is changed
 If the display shows implausible pressure readings
1. In the basic menu, use the cursor keys  or  to select "Other
selections":
2. Depressurise the unit (as described in chapter "Changing the dryer
filter" on page 122).
3. Press ENTER to confirm.
4. Use the cursor keys  or  to select "Service":
5. Press ENTER to confirm.
6. Enter the password "2224".
7. Confirm "Pressure transducer" by pressing ENTER.
8. Then follow the instructions in the display.
– Unscrew the service couplings (14) and (15) from the service
hoses (12) and (13).
– Use the keypad (8) to enter the current local atmospheric pressure
and press ENTER to confirm.
I
NOTE
You can look up the current atmospheric pressure for your region on the
Internet, for example at http://www.meteo24.de/wetter/ under "air pres-
sure".
9. When calibration has been completed, press ENTER to exit the
menu.
10. Press STOP twice to access the standby menu.
11. Screw the service couplings (14) and (15) hand-tight onto the service
hoses (12) and (13), taking care not to mix up the red and blue mark-
ings on the couplings and hoses.
126
Short selection
Free selection
Other selections
ENTER-OK
Int. vessel filling
Flushing
Reset scales.
Service.
VAS 581 001A
EN