Cadillac 60 Series 1963 Shop Manual page 411

13-30
HEATING AND AIR CONDITIONING
20. Connecting Charging
Station, J-8393
NOTE: Gage fittings are provided at both
the high and low pressure fittings on the com-
pressor. Purging, evacuating, and charging
must be done at these fittings. Do not connect
low pressure charging line to fitting on suction
throttling valve when evacuating or charging
the system.
1. Remove caps from high and low pressure
fittings on compressor.
2. Make certain that all valves on Charging
Station are closed.
3. Install Gage Adapters, J-5420, on Charging
Station high and low pressure lines.
4. Connect Charging Station high and low pres-
sure lines to corresponding fittings on compres-
sor, Fig. 13-25.
21. Evacuating the System with
Charging Station, J-8393
Whenever the Air Conditioning system is opened
for any reason, it should not be put into operation
again until it has been evacuated several times.
For this operation use Charging Station, J-8393,
to remove air and moisture that may have entered
the system.
Check Charging Station vacuum pump oil level
at oil filler screw on front of pump. Oil should
be level with bottom of filler tube, Fig. 13-26.
Add 150 viscosity refrigeration oil to bring to
proper level. Change the oil in pump every 250
hours of operation. A small amount of 150 vis-
cosity oil may be drawn into the pump occasion-
ally to insure protection of internal parts during
n
Charging Station J-8393
periods of disuse. If the pump should fail to start,
check capacitor or relay.
1. Purge system as described in Note 19.
2. Connect Charging Station high and low pres-
sure lines as described in Note 20.
3. Plug in Charging Station to 110 volt outlet
and turn on vacuum pump switch.
4. Open valve 1 (low pressure control), valve
2 (high pressure control), and valve 3 (vacuum
control).
5. Operate to obtain 28 inches of vacuum, then
continue to operate pump for ten minutes.
6. While evacuating the system, add refrig-
erant to cylinder on Charging Station by opening
valves on refrigerant drum and at bottom of cyl-
inder (valve 4 must be closed). Open valve on
top of cylinder until proper liquid level is obtained
in sight tube, and then close both top and bottom
valves on cylinder.
7. Close valves 1, 2 and 3 and turn off vacuum
pump switch. System should hold vacuum.
8. Slowly open valves 2 and 4, allowing 1/2 to
1 lb. of refrigerant to enter system, then close
valves.
NOTE: It
test system
Note 17.
is advisable at this
for major leaks as
time to leak
described in
9. Purge system.
j Charging
Station J-8393
• *
n.
'.'"'^r-'"
:
"'.l!O
with 150 vis
c°
sit
y
f •* ., .'/. Compressor Oil
Oil Should Be Level
>-?i;i With Bottom of
Filler Tube "
Fig. 13-25 Connecting Charging Lines
Fig. 13-26 Vacuum Pump Oil Level