MAHLE RTI RHS650 - Manual (Page 10)

Page 9
CHARGING
7. After completion of the charging process, wait approximately 30 seconds, close service hose
valves and then remove hoses from the A/C system.
8. The hoses will still contain a small amount of refrigerant. To recover this refrigerant, switch
process selector switch to RECOVERY/RECYCLING for a short time and open valves 1 and 2.
NOTE: Refrigerant can be transferred from the internal cylinder by connecting the high
pressure service hose (red) to the vapor port of the refrigerant cylinder. Open high
pressure hose service valve. Open valve 4 and valve on the refrigerant cylinder. Note
that the refrigerant cylinder must not be charged with more than 80% of the maximum
volume. After the required amount has been charged, close the valve on the refrigerant
cylinder and valve 4. Open valve 1 and set the process switch to
RECOVERY/RECYCLING to drain the high pressure hose.
The refrigerant cylinder on the rear of the RHS650 may have an over-fill protection
(OFP) limit switch installed. The OFP cord must be connected to the receptacle on the
cylinder. If the cylinder fills to 80% capacity, the charge mode will stop and the Cylinder
Full yellow lamp will illuminate. The RHS650 will not charge (into an A/C system or the
cylinder) as long as this lamp is illuminated.
Disconnect the OFP cord from the refrigerant cylinder and connect it to the receptacle
on the rear of the RHS650 to over-ride the function. Refrigerant from the internal
cylinder can then be charged into an A/C if desired.