1A-1
CUSTOM
AIR
CONDITIONER
COMPONENT
REPLACEMENT
AND
ADJUSTMENT
CONTENTS
OF
THIS
SECTION
SUBJECT
PAGE SUBJECT
PAGE
Evacuate Charge and Operational Check . . .
1A-
-2
Control
Assembly - Replace. . . . .
.
. . . 1A
-39
Checking
and
Adding
Compressor Oil . . .
1A-
-8
.
.
a
. 1A
-39
Compressor Assembly Remove and Replace .
1A-
-9
Blower
Speed Switch
.
. . . 1A
-40
Compressor
Assembly
Overhaul
......
1A-
•16
.
. . . 1A
-40
1A-
•
14
Master
Switch .
............
.
• . . lA-
-40
1A-
-10
Blower
Motor Resistor. „ . . . .
a
.
.
. . . lA-
-40
1A-
•29
.
1A-
-41
1A-
•29
.
. . . 1A--42
1A-
•29
Master
Relay . . . . . . . . . . . . .
,
. . . 1A-
-42
1A-
•30
.
. . . 1A-
-42
1A-
•31
,
. . . 1A-
-42
1A-
•31
Diverter»
. .
a
.
. . . 1A-
•42
Air
Inlet and Valve Assy. - Replace . . . .
1A-
•32
.
, . 1A-
•42
Blower
Motor, Impeller or Inlet Duct . . . .
1A-
•32
.
. . 1A-
•43
A/C
Heater
Core
or
Case
- Replace . . . .
1A-
•32
Cold
Air Duct,
.......
,
. .
0
1A-
•43
Cam
Assembly - Temp. Door - Adjust
Defroster Duct
.............
...
1A-
•44
1A-
-36
Outlet
Nozzle Right or
Left
. . . . .
.
. . . 1A-
•44
1A-
•36
Upper
Air Outlet and Nozzle. . . . .
.
. . • 1A-
•44
1A-
•39
.
. . . 1A-
•44
Defroster
Cable.
. . . . • •
1A-
•39
.
. . . 1A-
45
PRECAUTIONARY
SERVICE
MEASURES
Before any service is attempted which requires
opening of refrigeration pipes or units, the person
doing the work should be thoroughly familiar with
the material in the Diagnosis
Manual
-
Basic
Air
Conditioning
Information. Also, he should follow
very
carefully the instructions given on the following
pages
for the unit being serviced.
The
major reasons
behind
these
measures are for
safety and to prevent
dirt
and moisture from
getting
into system,.
Dirt
contaminant is apt to cause leaky
valves or wear in the compressor, and moisture
will
freeze into ice at expansion valve and freeze valve
stem.
The
presence of moisture can also cause the for-
mation of hydrochloric or hydrofluoric acids in the
system.
REFRIGERATION SUB-ASSEMBLIES
l
a
All sub-assemblies are shipped, sealed and de-
hydrated.
They are to remain sealed until just
prior
to making connections.
2,
All sub-assemblies should be at room tempera-
ture
before uncapping.
(This
prevents condensation
of moisture from the air that enters the system.)
3.
If, for any reason, caps are removed but the
connections are not made, then the tubes and other
parts
should not remain unsealed for more than 15
minutes. Reseal connections if period is to be long-
er.
This
applies particularly to partially built-up
systems that
will
be left overnight.
4. Compressors are shipped with 10-11 oz. of
Frigidaire
525 viscosity oil and charged with a
mixture
of Refrigerant-12 and dry nitrogen to pro-
vide an internal pressure at slightly above atmos-
pheric
pressure.
ASSEMBLY
1. All precautions should be taken to prevent dam-
age to fittings or connections.
Even
minute damage
to a connection could cause it to leak.
2.
Any fittings
getting
grease or
dirt
on them
should be wiped clean with a cloth dampened with
alcohol.
Do not use chlorinated solvents such as
trichloroethylene for a cleaning agent, as they are
contaminants. If
dirt,
grease or moisture
gets
inside
pipes and cannot be removed, pipe is to be replaced.
3.
Sealing caps should be removed from sub-
assemblies just
prior
to making connections for
final
assembly.
4. Use a small amount of clean refrigeration oil
(525 or 1000 viscosity) on all tube and
hose
joints,
and dip the
O-ring
gasket in this oil before
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