MAHLE RTI TC2670 User Manual
Page 14
RTI Technologies, Inc.
September 30, 1999
Page 13
13
EXAMPLE:
The level of liquid visible in the TC2670 Charging Cylinder Sight Glass is 7.4 lbs. and the
A/C system capacity is 3.2 lbs. The following calculation results...
(7.4) - (3.2) = 4.2
Therefore, the sliding indicator should be set at 4.2 lbs. in this example. When the liquid
level lowers to the 4.2 lb. mark, a charge of 3.2 lbs. will have been delivered
NOTE...
The Sight Glasses on the Charging Cylinders have markings for both R12
and R134a. Always use the correct scale for accurate charging.
7.
Open High Side Gauge Manifold Valve. Do not start the Vehicle's Engine. Refrigerant will flow
into the high side of the A/C System. Closely monitor the liquid level as it lowers in the Charging
Cylinder Sight Glass.
8.
Close High Gauge Valve as soon as the refrigerant level drops to the sliding indicator.
9.
Press bottom (OFF) of rocker switch marked CHARGE/HIGH SIDE.
9.
Press bottom (OFF) of rocker switch marked R12 POWER.
The vehicle can now be started and the A/C system checked by monitoring Gauge pressures.
Evacuate the hoses per the preceding section "Hose Evacuation".
Always close Red and Blue Hose Valves before disconnecting hoses.
NOTE:
All Refrigerant Recycling Machines charge Liquid, by law. The preceding is the
suggested method of charging liquid into an A/C system.
Some vehicle manufacturers may not provide a High Side connection. The above
instructions would have to be modified accordingly. Always follow the vehicle
manufacturer’s recommended service procedures.