Instruction Manual

Page 6
WEIGHT= XX.X LB
AUTOMATIC
?
5
>
WEIGHT= XX.X LB
RECYCLE
?
5
ENTER
RECYCLE HOLD
TIME XX MIN
5
>< ENTER
CHECK HOSES
START
?
5
ENTER
WEIGHT= XX.X LB
COMPRESSOR ON
WEIGHT= XX.X LB
COMPRESSOR OFF
AMOUNT RECYCLED=
XX.X LB
5
ENTER
DRAIN RECOVERED
OIL NOW!
5
ENTER
*
HIGH PRESSURE
SEE MANUAL
**
CYLINDER FULL
GO TO CHARGE
5
RECOVER/RECYCLE
1. Setup the RHS780 as shown on Page 4 and then turn the Main Power Switch
ON.
2. Attach the Red and Blue Hoses to the A/C System per the vehicle
manufacturer's instructions, open the Red and Blue Hose Valves.
3. Using the Keypad, press the “Up Arrow” key one time to display “WEIGHT=
XX.X LB” “RECYCLE?
5” and press the ENTER key. The Display 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 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 will then read “CHECK HOSES” “START?
5”.
5. Press the ENTER key to start recovering and recycling with the RHS780.
The Display 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 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
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 will
read “AMOUNT RECYCLED=” “XX.X LB
5” from the A/C System and the
Attention Light will turn ON.
6. Close the Red and Blue Hose Valves and disconnect the hoses from the A/C
System.
7. 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.
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 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 RHS780 can be
used to recover more refrigerant. Press the ENTER key to return to the
Main Menu.