MAHLE RTI Matco AC880 - Manual (Page 12)

Page 11
*
H I G H P R E S S U R E
S E E M A N U A L
**
C Y L I N D E R F U L L
G O T O C H A R G E 5
T I M E L E F T = X X M I N
P U M P O N
P U M P O F F X X M I N
C O N T I N U E
?
5
ENTER
A D D O I L N O W
C O N T I N U E
?
5
ENTER
W E I G H T = X X . X L B
C H A R G I N G
R E C Y C L E D = X X . X L B
E V A C H O S E S 5
ENTER
D R A I N R E C O V E R E D
O I L N O W ! 5
ENTER
AUTOMATIC (continued)
The Display will read the “WEIGHT= XX.X LB” “COMPRESSOR ON”. The AC880
will recover and recycle refrigerant from the A/C System and automatically cycle
OFF when a vacuum is sensed. This vacuum level can be seen on the Low
Pressure Gauge. The Display will read “WEIGHT= XX.X LB” “COMPRESSOR
OFF”
A small quantity of refrigerant will probably remain in the A/C System as observed
by an increasing pressure on the Low Pressure Gauge. The AC880 will
automatically cycle ON to continue recovering refrigerant if pressure rises to a
preset level. This automatic cycling will repeat resetting the Recycle Hold Timer
each time. If a Vacuum Time greater than zero minutes was entered in Step 6,
the Vacuum Pump will turn ON, the Display will read “TIME LEFT=XX MIN”
“PUMP ON” and the minutes remaining will count down on the Display. The
Vacuum Pump will turn OFF when the Display reads zero minutes.
12. Drain any recovered oil using the Drain Recovered Oil procedure on Page 7.
* This screen will display if there is an internal fault. Turn the AC880 Power
Switch OFF. Contact RTI Technical Support.
** This screen will display when the Charging Cylinder fills to capacity,
approximately 24 lbs (11 Kg). If this occurs, the weight can be lowered using
the Charging procedure on Page 9 before the AC880 can be used to recover
more refrigerant. Press the ENTER key to return to the Main Menu.
13. If a Vacuum Leak Check was selected by choosing Y in Step 7 the Display will
read “PUMP OFF XX MIN” “CONTINUE?
5” and the Attention Light will turn ON.
The elapsed time since the Vacuum Pump stopped will count up on the Display.
An increasing pressure on the Low Pressure Gauge is evidence of a vacuum leak
in the A/C System. Press the ENTER key to continue with the Automatic
sequence or RESET to return to the Main Menu.
14. If Add Oil was selected by choosing Y in Step 8 the Display will read “ADD OIL
NOW” “CONTINUE? 5”, and the Attention Light will turn ON. Refer to Figure 4
and connect Oil Charge Bottle (11) to Oil Charge High Side (7) or Oil Charge Low
Side (10) based on the vehicle manufacturer’s instructions for charging high or
low side. Open the valve on the Oil Charge Bottle (11), and leaving it open until
the correct amount of oil has left the Oil Charge Bottle. Close the valve on the Oil
Charge Bottle and press the ENTER key to continue.
15. If a Charge Amount greater than zero pounds was entered in Step 9 the Display
will read “WEIGHT= XX.X LB” “CHARGING”as refrigerant leaves the Charging
Cylinder. The weight displayed will be increasing from zero to the charge amount
entered plus a one ounce (0.03 KG) “Over Charge” set at the factory to
compensate for hose loss. (See Setting Over Charge Amount on Page 13 to
change the default value.) When the AC880 has finished, the Display will read
“RECYCLED=XX.X LB” “EVAC HOSES” and the Attention Light will turn ON.
16. Press the ENTER key. The Display will read “DRAIN RECOVERED OIL NOW!”.
Drain any recovered oil using the Drain Recovered Oil procedure on Page 7.
17. Press the ENTER key to return to the Main Menu. The A/C System can now be
turned on and checked by monitoring the High and Low Pressure Gauges.
18. Close the Red and Blue Hose Valves, disconnect them from the A/C System and
go to Page 6 (Recover/Recycle) to Evacuate refrigerant from the Hoses.