Toyota Celica 1993 AT200 series Repair Manual page 957

AC-2
AIR CONDITIONING SYSTEM _ GENERAL DESCRIPTION
A newly developed refrigera nt,
does not the destroy the ozone
H F C 1 3 4 a ( R 1 3 4 a ) ,
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U l t r a v i o l e t R a y s \
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R 1 3 4 a
A/C SYSTEM
N D - O I L 8
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G E N E R A L D E S C R I P T I O N
NEW AIR CONDITIONING SYSTEM WtTii."
H F C 1 3 4 a
Refrigerant CFC 12 (R 12), previously used in
automobil6s'air conditioning systems is believed to
contributs towards the deoletion the earth's ozone
layer. The ozone layer help to protect us against the
harmful ultraviolet ravs of the sun.
P R E C A U T I O N S
F O R S E R V I C I N G H F C l 3 f d
"
A I R C O N D I T I O N I N G S
1 .
U S E O F N E W R E F R I G E R A N T H F C l 3 4 a
The very different characteristics of refrig6rants
H F C 1 3 4 a a n d C F C l 2 h a v e d o t e r m i n e d t h e d e s i g n o f
their r€spectiv6 air conditioning systgms. Under no
c i r c u m s t a n c e s a l l o w C F C 1 2 t o e n t e r a n H F C I 3 4 a
system, or vice versa, because serious damage could
occu r.
2, USE OF PROPER COMPRESSOR OIL
Compressor oil used in conventional CFC12 air conor-
tioning systams cannot bs used in HFC134a air condi-
tioning systoms.
Always use genuine Toyota HFC 1 34a air conditioning
oil ND-OlL 8, made expressly for use with HFC134a.
lf even a small amount of th€ wrong oil is changed, it
will result in clouding of th6 r€frigorant.
A large amount will cause the compr€ssor to seizo up.