MAHLE RTI RHS730 (Rev A) - Manual (Page 6)

Page 5
This procedure may be slow or fail to work if the internal
charge cylinder pressure is higher than the pressure in the
cylinder of new refrigerant. Check and purge air if necessary
(See Page 7).
Also, try putting a heat belt on the new refrigerant cylinder.
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
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
FILL CHARGE CYLINDER
1. Connect a cylinder of new refrigerant to the Fill Port on the rear of the
RHS730 as shown on Page 4. Anti-blowback Valve must connect to
the RHS730. Turn the cylinder up-side-down. Turn Main Power Switch on.
The display will show WEIGHT= XX.X LB AUTOMATIC? 5.
2. Press the
>
key four times to display WEIGHT= XX.X LB FILL
CYLINDER? 5.
3. Press the ENTER key. The display will read START? 5.
4. Open the valve on the cylinder of new refrigerant.
5. Press the ENTER key to start filling the RHS730.
The Display will read WEIGHT= XX.X LB COMPRESSOR ON.
When the weight is approximately 20 lbs (9 kg) the RHS730 will turn
OFF, the display will read FILL COMPLETE FILLED=XX.X LB 5
(the amount of refrigerant removed from the cylinder). The Attention
Light will turn on.
The RESET button on the keypad can be pressed at any time to stop
the Fill Cylinder procedure prior to it filling and shutting off
automatically.
6. Close the valve on the refrigerant cylinder.
7. Press the ENTER key to return to the Main Menu.
* While filling the charge cylinder, this screen will display periodically
concurrent with the Attention Light turning on. This is normal and
nothing to be concerned about. The screen will return to normal after
a few seconds.
** This screen will display if the charge cylinder fills to capacity,
approximately 24 lbs (11 Kg). If this occurs, the weight can be lowered
using the Charge procedure on Page 9. This must be done before the
RHS730 can be used to recycle more refrigerant. Press the ENTER
key to return to the Main Menu.
Notes:
It may be desirable to skip this procedure for large capacity or multiple A/C systems where recharge will not be
done between successive recycling procedures.
The RHS730 uses 22 lbs (10 Kg) of refrigerant when filling the first time. If the cylinder of new refrigerant is
emptied, the RHS730 will appear to stop filling (the weight displayed will stop increasing) and will stay in this
condition until the RESET key is pressed.
The RHS730 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.
The RHS730 Charge Cylinder can also be filled from the GAS or VAPOR side of a cylinder by following the Recycle
procedure on Page 6.
The yellow hose can be disconnected from the Fill Port on the rear of the RHS730 and reconnected to either the
Blue (Low side) or Red (High Side) hose connection port on the side of the RHS730 to allow recycling any
refrigerant remaining in the yellow hose using the Recycle procedure on Page 6.