MAHLE RTI RHS780 - Manual (Page 7)

December 9, 2002 Page 6
W E I G H T = X X . X L B
A U T O M A T I C ? 5
>
W E I G H T = X X . X L B
R E C Y C L E ? 5
ENTER
R E C Y C L E H O L D
T I M E X X M I N 5
><
ENTER
C H E C K H O S E S
S T A R T ? 5
ENTER
W E I G H T = X X . X L B
C O M P R E S S O R O N
W E I G H T = X X . X L B
C O M P R E S S O R O F F
A M O U N T R E C Y C L E D =
X X . X L B 5
ENTER
D R A I N R E C O V E R E D
O I L N O W ! 5
ENTER
*
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
RECOVER/RECYCLE
1. Setup the RHS780 as shown on Page 4 and then turn the Main Power Switch (3)
ON.
2. Attach the Red (14) and Blue (13) Hoses to the A/C System per the vehicle
manufacturer's instructions, open the Red and Blue Hose Valves.
3. Using the Keypad (2), press the “Up Arrow” key one time to display “WEIGHT=
XX.X LB” “RECYCLE? 5” and press the ENTER key. The Display (6) will read
“RECYCLE HOLD” “TIME XX MIN 5”.
The Recycle Hold Time is the amount of time that the RHS780 waits for “out-
gassing” or for the pressure in the A/C System being recovered to rise enough to
automatically restart the recovery process. The minimum value is two (02)
minutes. The value entered is stored in memory and comes up as the default
value the next time the procedure is used.
4. Press the “Up Arrow” key to change the value of the field. Press the “Right Arrow”
key to change to a different field. Press the ENTER key to accept the value. The
Display (6) will then read “CHECK HOSES” “START? 5”.
5. Press the ENTER key to start recovering and recycling with the RHS780.
The Display (6) will read the “WEIGHT= XX.X LB” “COMPRESSOR ON”. The
RHS780 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 (1) Pressure Gauge. The Display (6) 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 (1) Pressure Gauge. The RHS780 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. When the RHS780 remains OFF for the duration of the Recycle Hold
Timer value entered in Step 4 the Display (6) will read “AMOUNT RECYCLED=”
“XX.X LB 5” from the A/C System and the Attention Light (7) will turn ON.
6. Close the Red (14) and Blue (13) Hose Valves and disconnect the hoses from the
A/C System.
7. Press the ENTER key. The Display (6) will read “DRAIN RECOVERED OIL
NOW!”. Drain any recovered oil using the Drain Recovered Oil procedure on
Page 7.
8. Press the ENTER key to return to the Main Menu.
* This screen will display if there is an internal fault. Please contact RTI
Technical Support. Turn the RHS780 Main Power Switch (3) OFF.
** 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 RHS780 can be used to
recover more refrigerant. Press the ENTER key to return to the Main Menu.