MAHLE RTI Matco AC880 - Manual (Page 12)

Page 11
W E I G H T = X X . X L B
C O M P R E S S O R O F F
*
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. Please contact RTI
Technical Support. Turn the AC880 Power Switch OFF.
** This screen will display when the Charging Cylinder fills to capacity,
approximately 39.5 lbs (18 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 Adding 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. Add oil to
the side, either High or Low, based on the vehicle manufacturer’s
instructions, of the A/C System that will then be Charged during the Charging
portion of the Automatic sequence by opening the valve on the Oil Charge
Bottle 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 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 the refrigerant from the
Hoses.