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SPECIFIC WARNINGS AND CAUTIONS
Be sure to observe warnings listed in the safety summary in the front of this manual before perform-
ing maintenance on the hvac system
Read the entire procedure before beginning work. Park the coach on a level surface, with parking
brake applied. Turn main electrical disconnect switch to the off position.
Do not use a nitrogen cylinder without a pressure regulator.
Do not use oxygen in or near a refrigeration system as an explosion may occur.
The filter-drier may contain liquid refrigerant. Slowly loosen the flare nuts to avoid refrigerant con-
tact with exposed skin or eyes.
Extreme care must be taken to ensure that all the refrigerant has been removed from the compressor
crankcase or the resultant pressure will forcibly discharge compressor oil.
Beware of rotating fan blades and unannounced starting of fans or compressor.
To avoid the entrance of air, never evacuate an open drive compressor below 500 microns.
To prevent trapping liquid refrigerant in the manifold gauge set be sure set is brought to suction
pressure before disconnecting.
T--336
SAFETY SUMMARY
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
WARNING
CAUTION
CAUTION
Safety--2
05/09
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