DIRECT SUPPORT TROUBLESHOOTING INTRODUCTION - CONTINUED
Refrigerants are safe when used under the right conditions. Always wear safety goggles and nonleather
gloves while discharging, purging, flushing, evacuating, charging, and leak testing the system. Do not
wear leather gloves; when refrigerant gas or liquid contacts leather, the leather will stick to your skin.
Refrigerant splashed in the eyes should first be treated with a few drops of sterile mineral oil in the eyes,
then rinsed with a weak boric acid solution. Do not rub the eyes. Call a doctor right away.
Refrigerant splashed on the skin should be treated the same as for frostbite: gently pour cool water on the
area, but do not rub the skin. Keep the skin warm with layers of soft, sterile cloth. Call a doctor right away.
WAR N I N G
Do not work in an area where refrigerant may contact an open flame or any burning material, such as a ciga-
rette. When it contacts extreme heat, refrigerant breaks down into poisonous phosgene gas which, if
breathed, causes severe respiratory irritation. Do not breathe the fumes from an open flame leak detector.
Even though refrigerant does not burn, when it contacts extreme heat or flame, poisonous phosgene gas is
created. This gas is also produced when an open flame leak detector is used. Phosgene fumes have an acrid
You must work in an area where there is a constant flow of fresh air when the system is discharged,
flushed, charged, and leak tested using an open flame leak detector.
Under current federal laws, refrigerant must be recovered and recycled by all users to protect the environ-
ment, and not released into the atmosphere. Many service operations not directly involving the A/C system
require the release of the refrigerant charge. Under the new regulations, shops not having the required
recovery and recycling equipment (and properly trained and certified personnel) will not be allowed to do
any of this service work.
Because of its very low boiling point, refrigerant must be stored under pressure. To prevent the refrigerant
cans from exploding, never expose them to temperatures higher than 125°F (52°C). Never leave refriger-
ant cans in the sun, and do not store them in sun-exposed areas where heat can build up, such as in glove-
boxes, automobile trunks, etc.
END OF WORK PACKAGE
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