MAHLE RTI RHS780 - Manual (Page 6)

September 24, 1999 Page 5
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
F I L L C Y L I N D E R ? 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
F I L L C O M P L E T E
F I L L E D = X X . X L B 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
FILLING THE CHARGE CYLINDER
Note: For large capacity or multiple A/C Systems where recharge will
NOT be done between successive recoveries, it may be desirable to
skip this procedure.
1. Setup the RHS780 as shown on Page 4 and then turn the Main Power
Switch (3) ON. An adapter is provided with the RHS780 (R134a) which
permits the Yellow Hose (12) to be attached to the 1/4 SAE Flare fitting
that is on some cylinders of R134a refrigerant.
Note: The RHS780 uses 15.4 lbs (7 Kg) of refrigerant when Filling the first
time. If the Refrigerant Cylinder (15) is emptied the RHS780 will
appear to stop filling (the Weight will stop rising) and will stay in
this condition until the RESET key is pressed.
2. Using the Keypad (2), press the “Up Arrow” key four times to display
“WEIGHT= XX.X LB” “FILL CYLINDER? 5” and press the ENTER key.
The Display (6) will read “CHECK HOSES” “START? 5”.
3. Open the LIQUID Valve on the Refrigerant Cylinder (15) connected to
the Fill Port (11) on the left side of the RHS780 with the Yellow Hose
(12).
4. Press the ENTER key when ready to start filling the RHS780.
The Display (6) will read “WEIGHT=XX.X LB” “COMPRESSOR ON”.
When the level is approximately 13 lbs (6 kg) {75% of the full capacity}
the RHS780 will turn OFF, the Display (6) will read “FILL COMPLETE”
“FILLED= XX.X LB 5” (the amount of refrigerant removed from the
cylinder) and the Attention Light (7) will turn ON. Close the Liquid Valve
on the Refrigerant Cylinder (15).
Note: Press the RESET button on the Keypad to stop the
Fill Cylinder procedure at any time.
5. Press the ENTER key to return to the Main Menu.
* While filling the Charging Cylinder, this screen will display periodically
concurrent with the Attention Light (7) turning ON. This is normal and
nothing to be concerned about. The screen should revert to normal
after a few seconds.
** This screen will display when the Charging Cylinder fills to capacity,
approximately 17.5 lbs (8 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.
Note: The RHS780 Charging Cylinder can also be filled from the GAS or
VAPOR side of a cylinder by following the Recover/Recycle
procedure on Page 6.
Note: The RHS780 will use 1.1 Lb (0.5 Kg) more refrigerant than the
displayed value the very first time it is used or after performing a
Calibration Procedure in order to prime the internal components.
Note: The Yellow Hose (12) can be removed from the Fill Port (11) and
connected to either the Blue (13) {Low side} or Red (14) {High Side}
Hose connection port on the rear of the RHS780 to allow recovering
the refrigerant left over in the Yellow Hose (12) using the
Recover/Recycle procedure on Page 6.