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Automatic A/C-Service Unit
5.
Recovery
During Recovery, set the LOW and HIGH valves on the control panel so that the input pressure never rises over
5 bar.
When the Recovery function has been started, it will only last max. 120 minutes. In case the pre-set
quantity of refrigerant has not been recovered within 120 minutes, the unit will stop automatically and the
alarm message will appear on the display.
5.1
P
REPARING THE VEHICLE FOR REFRIGERANT RECOVERY FROM THE
The preliminary preparation of the vehicle facilitates the separation of refrigerant and lubricant and
prevents the latter from being dragged.
a)
Turn on the engine with closed hood. Turn the A/C system on and have it run for some minutes.
b)
Open the hood and set the A/C system fan to maximum speed.
c)
Have the vehicle engine run slowly (800 - 1200 revolutions/min) for at least 20 minutes.
d)
Turn the vehicle engine off and have the A/C system fan run at maximum speed and start
recovery operations .
5.2
R
EFRIGERANT RECOVERY FOR
This function allows the total recovery of the refrigerant. The unit automatically stops, when the A/C
system reaches a residual internal pressure of -0,2 bar.
a) Make sure that all valves are closed and that the 67 main switch is in position 0
b) Connect the 56 valve of the 53 hose to the A/C system low pressure service connection.
c) Connect the 55 valve of the 52 hose to the A/C system high pressure service connection
d) Turn the power on by turning the 67 main switch to position I
e) Press the R key (blinking led): the following screen will appear on the display:
•
RECOVERY ALL
•
RECOV. MAX 12.000 hypothetical value
f)
P the START key: the unit starts refrigerant recovery, the led of the R key is on and the display
shows:
•
the refrigerant quantity that is being recovered
•
the refrigerant contained in the stocking bottle
•
the number of recovery cycles performed
If there is no refrigerant, the function will not be activated and the alarm message will appear on the
display
g) At the end of recovery, the unit stops automatically and waits for 5 minutes.
h) If during these 5 minutes the pressure inside the A/C system rises beyond 0,4 bar, the unit will
automatically start another recovery cycle
i)
The unit will perform maximum 5 recovery cycles. If the pressure inside A/C system still rises beyond
0,4 bar even after the third recovery cycle, the unit will automatically stop the operations and the
alarm message will be displayed
j)
If after the 5 minutes the pressure does not rise beyond 0,4 bar, the unit will automatically stop and
will automatically start the oil discharge and the screen corresponding to the function will be
displayed
k) At the end of the function, the summarizing screen will appear on the display:
•
RECOVERED REFRIGERANT
•
OIL DISCHARGED
l)
At the end of the function, the unit will print a report (the print can be repeated)
Letzte Änderung: 24.06.2009 / Art.Nr.: 2059ENG
WARNING
R=
ALL
20
A/C
SYSTEM
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