1979 DATSUN 210 cooling

r
l

Condition

6

@

@

AC211
A

o

@

g
@

fj
212A

I
AIR
IN

SYSTEM

r

l

lI
IJI
I

J

ole
I

i

@
@

AC213A

I
MOISTIJRE
IN

SYSTEM

I

@
@

AC214A
Air

Co
itioning

Insufficient

cooling

Sweated

suction
line

No

cooling

Sweating
or
frosted

sue

tion

line

Insufficient

cooling

Sight
glass
shows
occasion

al

bubbles

After

operation
for
a

while

pressure
on
sllction

side

may
show

vacuum

pressure

reading
During

this

condition

discharge

air

will
be
wann
As
warn

ing
of
this

reading
shows

0
4

kg
cm2

6

psi
vibra

tion

AC
38
Probable
cause

Expansion
valve
allows
too

much

refrigerant

through

evaporator

F

aul

ty
expansion
valve

Air
mixed

with

refrigerant

in

system

Drier
is

saturated
with

moisture
Moisture
has
fro

zen

at

expansion
valve

Refrigerant
flow
is
restrict

ed
Corrective
action

Check
valve
for

operation

If
suction

side
does

not

show
a

pressure
decrease

replace
valve

I

Discharge

system

2

Replace
valve

3
Evacuate
and

replace

system

I

Discharge
system

2

Replace
receiver
drier

3

Evacuate
and

charge

system

I

Discharge
system

2

Replace
receiver
drier

twice
if

necessary

3
Evacuate

system
com

pletely
Repeat
30

minute

evacuating
three

times

4

Recharge
system

Condition

I
FAULTY
CONDENSER

I

I

@
@

AC215A

I
HIGH
PRESSURE
liNE
BLOCKED

I

r

@

@

AC216A

I
FAULTY
COMPRESSOR

I

r
j
@

rg

AC217A
Air

Conditioning

o

cooling
action

engine

may
overheat

Bubbles

appear
in

sight

glass
of
drier

Suction
line
is

very
hot

Insufficient

cooling

Frosted

high
pressure

liquid
line

Insufficient

cooling

AC
39
Probable
cause

Condenser
is

often
found

not
functioning
well

Drier

clogged
or
restric

tion
in

high
pressure
line

Internal

problem
in
com

pressor
or

damaged
gasket

and

valve
Corrective
action

Check
fan
belt
and

fluid

coupling

Check
condenser
for

dirt

accumulation

Check

engine

coqling

system
for
overheat

Check
for

refrigerant

overcharge

Note
If

pressure
remains

high
in

spite
of
aU

above
actions
taken
re

move
and

inspect
the

condenser
for

possible

oil

clogging

I

Discharge

system

2
Remove

receiver
drier

or
strainer

and

replace

it

3

Evacuate
and

charge

system

I

Discharge
system

2
Remove
and
check

compressor

3

Repair
or

replace
com

pressor

4

Check
oil
level

5

Replace
receiver
drier

6
Evacuate
and

charge

system

r

Air

Conditioning

Condition

TOO
MUCH
OIL
IN

I
SYSTEM

Excessive
lostlfficient
cooling

r

i

@

g
@

Ti

AC218A
Probable
cause

Too
much
oil
circulates

with
refrigerant
causing

the
cooling
capacity
of
the

aystem
to
be
reduced

AC40
Corrective
action

Refer
to
Oil
Level
Check

for

correcting
oil

level

PERFORMANCE
CHART

TEST
CONDITIONS

Test
car
location

Door
windows

Door

Hood

Air
lever

Temperature
lever

Fan
switch

Engine
speed
Indoor
or
in
the
shade

Open

Closed

Open

COOL
Ale

Max
cold

3rd

1
500

rpm

TEST
READING
Air

Conditioning

Inside
air

Recirculating
air

at

cooling
unit
inlet

Relative
humidity

40
to

60

60
to

80

Relative

humidity
Ambient
air

temperature

oe
OF

40
to

80
20
68

25
77

30
86

35
95

40

104
Discharged
air

temperature
at

center
outlet

oe
OF

Air

temperature

oC
OF

20
68

25
77

30
86

35
95

20
68

25
77

30
86

35
95
1
5
to
5
0
35
to
41

6
0
to
9
5
42
to

49

10
5

to
14
0
51
to
57

i5
O
to
19
6

59
to
66

5
0
to
8

0
41
to

46

9
5
to
13
0
49
to
55

14
0
to
18
0
57
to
64

19
0
to
23
0

66
to
73

Pressure

high
Discharge
side

kg
cm2

psi
Pressure
low
Suction
side

kg
cm
2

psi

9
8
to
10

7

139
to
152

10
5
to
11
8
149

to
168

12
0
to
13

9
171
to
198

13
9
to

16
7

198
to
237

16

5
to

20
5
235
to
292
1
1

to
1

8

16
to

26

ii

1

2
to
1
9
17
to
27

14
to
2
3
20

to
33

1

9
to
2
8
27
to

40

2
7
to
3
8
38
to

54

AC
41