Heating and Air Conditioning: Service Precautions
CAUTION:^ ALWAYS WEAR GOGGLES AND WRAP A CLEAN CLOTH AROUND FITTINGS, VALVES, AND CONNECTIONS WHEN PERFORMING WORK THAT INVOLVES OPENING THE REFRIGERANT SYSTEM.
^ ALSO, BEWARE OF THE DANGER OF CARBON MONOXIDE FUMES BY RUNNING THE ENGINE IN CLOSED OR IMPROPERLY VENTILATED GARAGES.
^ NEVER CHARGE THE A/C SYSTEM THROUGH THE HIGH PRESSURE SIDE OF THE SYSTEM. COMPONENT DAMAGE AND PERSONAL INJURY COULD RESULT
^ CARE SHOULD BE TAKEN TO PREVENT PERSONAL INJURY WHICH COULD OCCUR DUE TO TOUCHING A HOT ENGINE WHEN TESTING. TESTS SHOULD BE DONE WITH THE ENGINE OFF AND AS COOL AS POSSIBLE. DO NOT OPERATE THE DETECTOR IN A COMBUSTIBLE ATMOSPHERE SINCE ITS SENSOR OPERATES AT A HIGH TEMPERATURE.