SECTION 50 -- CAB AIR CONDITIONING SYSTEM -- CHAPTER 1 23
603.54.471.00 -- 11 -- 2004
15
Recycling recovered refrigerant
On completion of the recovery operation, the refrig-
erant, which has already been through an oil separa-
tion process, must now be completely decontami-
nated.
Proceed as follows:
1. All cocks must be closed, with the exception of
cock (9, fig. 15) and the station must be switched
off -- switch (5) in position ā0ā and green indicator
light off.
2. Connect the end of the yellow service pipe (16)
without the cock to the free connector (17) lo-
cated on the left--hand side of the pressure
gauge manifold.
25378
1. Cylinder pressure gauge.
2. Recovery control pressure gauge.
3. Anti--acid and decontamination filter.
4. Recovered refrigerant/oil distillation cylinder .
5. Switch.
6. Refrigerant inlet control cock (LOW).
7. Recovered oil discharge cock (yellow).
8. Recoveered oil discharge pipe.
9. Oil return to compressor control cock (yellow).
10. Quick--fit connectors.
11. Blue service pipe for connection to suction side
of compressor.
Refrigerant recovery and recycling station
12. Red service pipe for connection to discharge
side of compressor.
13. Recovered compressor oil discharge cock.
14. Recovery compressor service valve (suction).
15. Humidity indicator .
16. Yellow service pipe for refrigerant transfer .
17. Fitting for refrigerant transfer .
18. Cock (REF) for refrigerant transfer and recycl-
ing.
19. Refrigerant cylinder.
20. Safety valve.
21. Cylinder (gaseous stage) discharge cock (yel-
low).
3. Connect the 2 ends of the yellow (16) and blue
(11) pipes with connector supplied.
4. Slowly open the cock (18--REF) and the blue
cock (6--LOW) on the pressure gauge manifold,
and the cocks on the two previously connected
service pipes (16 and 11).
5. Set switch (5)to position ā1ā (RECOVERY) --
green indicator light on.
The recovery compressor will start to operate
and the refrigerant will pass from the graduated
cylinder to the recovery circuit (distillation cylin-
der, filter and compressor) and then return to the
graduated cylinder .
6. Continue the operation until the circular sector of
the humidity indicator (15) turns green.
If after 15 minutes the circular sector of indicator
(15) still has not turned green, replace the filter
(3) as described on page 20.
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6
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11
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20
21
15
WARNING
At this stage the recovered refrigerant has not yet
been completely decontaminated and therefore
must not be used in the air conditioning system in this
condition.
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1216
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