14-17. AIR-CONDITIONING SYSTEM SERVICING (R-12)
This task covers:
a. Manifold Gauge Set Installation
e. Evacuating System
b. Manifold Gauge Set Removal
f. Charging System
g. Checking/Adding Lubricating Oil
d. Flushing System
General Safety Instructions
Always wear eye protection when
Exercise extreme care when handling R-12.
General mechanic's tool kit:
Never smoke where R-12 is used or stored.
Ensure adequate ventilation whenever R-12
Exposure to R-12 may be hazardous for
individuals with cardiac rhythm
Do not attempt to connect servicing
equipment while engine is running, and
hoses must be clear of any moving
Make sure hand valves on manifold gauge
set are closed during connection.
Do not disconnect hoses before back-seating
Eye protection must be worn when using
Make sure high side service valve on
manifold gauge set is in OFF/CLOSED
position during charging.
Avoid breathing R-12. Be sure
the work area is properly ventilated in
case of accidental release into the
Always wear eye protection around R-12, or when servicing the
air-conditioning system. Injury will result if R-12 comes in contact
Exercise extreme care when handling R-12; direct skin contact
Never smoke in areas where R-12 is used or stored. Injury to
personnel may result.
Avoid breathing R-12. Ensure adequate ventilation whenever R-12 is
being discharged. Injury to personnel may result if used in a
Personnel with a history of cardiac rhythm abnormalities should
be made aware of potential aggravation as a result of exposure to
R-12. Failure to do so may result in injury to personnel.
Do not attempt to connect servicing equipment while engine is
running. Injury to personnel or damage to equipment may result.