System Oil Level - Chrysler 1998 Viper RT/10 Owner's Manual

24 - 4 HEATING AND AIR CONDITIONING
S R
D E S C R I P T I O N
A N D O P E R A T I O N ( C o n t i n u e d )
C A U T I O N : T h e s y s t e m ' m u s t b e c o m p l e t e l y e m p t y
b e f o r e o p e n i n g
any
f i t t i n g o r c o n n e c t i o n i n t h e
r e f r i g e r a t i o n s y s t e m . O p e n f i t t i n g s w i t h c a u t i o n
e v e n a f t e r t h e s y s t e m h a s b e e n e m p t i e d . If a n y
p r e s s u r e i s n o t i c e d a s a f i t t i n g i s l o o s e n e d ,
retighten f i t t i n g a n d e v a c u a t e the s y s t e m a g a i n .
A g o o d rule f o r the flexible h o s e l i n e s i s t o k e e p
the r a d i u s of all b e n d s at l e a s t 10 t i m e s the d i a m e -
ter of the h o s e . S h a r p e r b e n d s will r e d u c e the flow
of refrigerant. T h e flexible h o s e l i n e s s h o u l d b e
routed s o t h e y a r e at l e a s t 3 i n c h e s (80 m m ) f r o m
the e x h a u s t m a n i f o l d . I n s p e c t all flexible h o s e l i n e s
to m a k e s u r e they a r e in g o o d c o n d i t i o n a n d p r o p -
erly r o u t e d .
T h e u s e of c o r r e c t w r e n c h e s w h e n m a k i n g c o n -
n e c t i o n s i s v e r y important. I m p r o p e r w r e n c h e s o r
improper u s e of w r e n c h e s c a n d a m a g e t h e fittings.
T h e internal p a r t s of the A / C s y s t e m will r e m a i n
s t a b l e a s long a s m o i s t u r e - f r e e refrigerant a n d
refrigerant oil i s u s e d . A b n o r m a l a m o u n t s of dirt,
m o i s t u r e o r a i r c a n u p s e t t h e c h e m i c a l stability.
T h i s m a y c a u s e operational t r o u b l e s o r e v e n s e r i -
o u s d a m a g e if p r e s e n t in m o r e t h a n v e r y s m a l l
q u a n t i t i e s .
W h e n o p e n i n g a refrigeration s y s t e m , h a v e e v e r y -
thing y o u will n e e d to repair the s y s t e m ready. T h i s
will m i n i m i z e t h e a m o u n t of time t h e s y s t e m m u s t
b e o p e n e d . C a p o r plug all l i n e s a n d fittings a s
s o o n a s t h e y a r e o p e n e d . T h i s will h e l p p r e v e n t the
e n t r a n c e of dirt a n d m o i s t u r e . A l l n e w l i n e s a n d
c o m p o n e n t s s h o u l d b e c a p p e d o r s e a l e d until t h e y
a r e r e a d y to b e u s e d .
All t o o l s , i n c l u d i n g t h e refrigerant d i s p e n s i n g
m a n i f o l d , t h e manifold g a u g e s e t , a n d t e s t h o s e s
s h o u l d b e kept c l e a n a n d dry.
S Y S T E i AIRFLOW
The system pulls outside (ambient) a i r or a combi-
nation of outside/recirculated a i r t h r o u g h the air
inlet i n the hood. Then i t goes into the plenum cham-
ber above the Heater-A/C u n i t housing a n d the a i r
passes t h r o u g h the evaporator. The air flow can then
be directed to the FLOOR or DEFROST outlets or
both vent modes can be selected. A i r flow velocity can
be adjusted w i t h the blower speed selector switch on
the i n s t r u m e n t panel. The Heater-A/C system uses
fresh a i r i n all modes except M a x A/C where a mix-
ture of fresh a i r and recirculated a i r is used. When
the system is i n the off position, a i r w i l l s t i l l flow
through the system (while the vehicle is i n forward
motion).
SYSTEM OIL LEVEL
I t is i m p o r t a n t to have the correct amount of oil i n
the A/C system to ensure proper lubrication of the
compressor. Too l i t t l e oil w i l l result i n damage to the
compressor. Too much o i l w i l l reduce the cooling
capacity of the system and consequently result i n
higher discharge air temperatures.
N O T E : T h e o i l u s e d i n the c o m p r e s s o r i s ND8 P A G
R»134a refrigerant o i l . O n l y refrigerant oil of t h e
s a m e type s h o u l d b e u s e d to s e r v i c e t h e s y s t e m .
Do n o t u s e a n y other o i l T h e o i l c o n t a i n e r s h o u l d
b e kept tightly c a p p e d u n t i l i t i s r e a d y for u s e .
Tightly c a p a f t e r w a r d s to prevent c o n t a m i n a t i o n
from dirt a n d m o i s t u r e . Refrigerant oil will q u i c k l y
a b s o r b a n y m o i s t u r e it c o m e s in c o n t a c t with. S p e -
c i a l effort m u s t b e u s e d to k e e p a l l R-134a s y s t e m
c o m p o n e n t s m o i s t u r e - f r e e . Moisture i n t h e oil i s
v e r y difficult to r e m o v e a n d will c a u s e a reliability
p r o b l e m with the c o m p r e s s o r .
I t w i l l not be necessary to check oil level i n the
compressor or to add oil unless there has been an oil
loss. O i l loss at a leak point w i l l be evident by the
presence of a wet, shiny surface around the leak.
REFRIGERANT OIL LEWEL ©HECK
When a n a i r conditioning system is first assem-
bled, a l l components (except the compressor) are
refrigerant o i l free. After the system has been
charged w i t h R-134a refrigerant and operated, the oil
i n the compressor is dispersed through the lines and
components. The evaporator, condenser, and filter-
drier w i l l retain a significant amount of oil, refer to
the Refrigerant O i l Capacities Chart. When a compo-
nent is replaced, the specified amount of refrigerant
oil must be added. When the compressor is replaced,
the amount of oil t h a t is retained i n the rest of the
system must be drained from the replacement com-
pressor. When a line or component has ruptured and
oil has escaped, the compressor should be removed
and drained. The filter-drier must be replaced along
w i t h the r u p t u r e d part. The oil capacity of the sys-
tem, minus the amount of oil s t i l l i n the remaining
components, can be measured and poured into the
suction port of the compressor.
CAUTIONS: T h e refrigerant oil u s e d i n a R-134a A / C
s y s t e m i s u n i q u e . U s e o n l y o i l s w h i c h w e r e
d e s i g n e d to w o r k w i t h R-134a r e f r i g e r a n t ,
The type of oil t h a t must be used i n the Viper A/C
system is ND8 PAG refrigerant oil. This oil is a poly-
alkelene glycol base oil. Use of oil other t h a n the
approved oil is not recommended.
• The amount of oil the Viper A/C system holds is
140 m l of ND8PAG refrigerant oil.
f A C U U i ACTUATORS - I 0 D E POORS
The Heater (A/C) system has three actuators (Fig.
4) and(Fig. 5). The one located on the left side of the