Table of Contents
Advertisement
Automatic A/C-Service Unit
9.
Charging refrigerant into the A/C system
9.1
W
ARNING
Before performing a charging operation, check the quantity of refrigerant available in the bottle; the bottle
must contain more refrigerant than needed for charging. If it does not, do not charge the A/C system and
fill refrigerant into the bottle (see 4.5. " Filling refrigerant into the bottle ").
NB.
The quantity of refrigerant available for charging is equal to the refrigerant in the
bottle minus 4Kg
Qcharge = Qin bottle – 4 Kg
9.2
A/C
SYSTEM REFRIGERANT CHARGING PROCEDURE
a)
Make sure that all the valves on the control panel are closed and that the 67 switch is on I
b)
Press the REFRIGERANT CHARGE key, the following screen will appear on the display:
•
R134 CHARGE
•
MAX CHARGE
c)
To modify the set values – see 2.10 "Control module"
d)
Now open the working side
e)
Press the START key: the unit will start to pre-charge the hoses and the current function will be
displayed.
f)
At the end, the unit will start to charge REFRIGERANT, the led on the REFRIGERANT
CHARGE key is on and the display shows:
•
R134a CHARGE
•
R134a
•
R134a AVAIL.
g)
After the pre-set refrigerant quantity has been charged, the function stops automatically and
summarizing screen appears on the display:
•
R134a CHARGE
•
R134a
When the functions have come to an end, the unit goes back to the summarizing screen. Press any key to exit
and return to the initial screen or press the FEED key to print the report of the function.
10.
Checking the A/C system operating pressures
a)
Wait a few minutes to enable the pressures to stabilize.
b)
Make sure that values of the pressures correspond to those supplied by the A/C system
manufacturer A/C
Letzte Änderung: 24.06.2009 / Art.Nr.: 2059ENG
1.550
15.500 hypothetical value
WARNING
25
Advertisement
Table of Contents
