BMW 3 (E46). Manual - part 284
The A/C system is filled with
refrigerant gas which is under
pressure. Pressurized refrigerant
in the presence of oxygen may
form a combustible mixture.
Never introduce compressed air
into any refrigerant container (full
or empty).
Electric welding near refrigerant
hoses causes R-134a to
decompose. Discharge system
before welding.
CAUTION!
As of January 1, 1992, any person
who services a motor vehicle air
conditioner must, by law, be
properly trained and certified,
and use approved refrigerant
recycling equipment. Technicians
must complete an EPA-approved
recycling course to be certified.
It is recommended that all A/C
service be left to an authorized
BMW dealer or other qualified A/C
service facility.
State and local governments may
have additional requirements
regarding air conditioning
servicing. Always comply with
state and local laws.
Do not top off a partially charged
refrigerant system. Discharge
system, evacuate and then
recharge system.
Do not use R-12 refrigerant,
refrigerant oils or system