MAHLE RTI TC670E - Manual (Page 9)

RTI Technologies, Inc.
Page 8
... NOTE ...
As refrigerant is processed by the TC670E, temperature variations can cause vapor to
change to liquid which may temporarily settle in various internal components.
If a known amount of refrigerant has been introduced into the TC670E it may not all be
seen in the Charging Cylinder Sight Glass.
This is normal and nothing to be concerned about. Refrigerant has not been lost.
The sight glass does not indicate the amount of refrigerant recovered. It is only
accurate for determining the amount of refrigerant charged out to the vehicle A/C System
while in the Charge Mode of operation.
! ! ! ! DO NOT TURN THE TC670E OFF OR DISCONNECT HOSES ! ! ! !
A small quantity of Liquid refrigerant will probably still remain in the A/C System. This can
be detected by observing an increasing pressure reading on the Low Side Gauge.
As pressure increases to a preset level, the TC670E will automatically cycle on and off to
continue recovering refrigerant.
Allow this automatic sequence to repeat until the vacuum level remains constant for at least 2
minutes.
5. Close Red and Blue Hose Valves.
6. Close High and Low Gauge Valves.
7. Press bottom (OFF) of rocker switch marked RECOVER/RECYCLE.
PURGE REQUIRED OR CYLINDER FULL LIGHT:
This Light will illuminate if either...
1) The Charging Cylinder has filled to capacity: Go to Page 12.
OR
2) Pressure on the Purge Gauge approaches 260 PSIG: Go to Page 9.