173_58300000002379_ara_en_j.doc – 29.04.14
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2.12.2 R 600a
2.12.2.1 Take precautions when repairing the the refrigerant circuit
The hydrocarbon R 600A is highly flammable, however only in
combination with air, and explosive at a specific mixing ratio.
This flammable mixture cannot occur with our usual quantities unless
there is an accumulation of extremely unfortunate circumstances.
Nevertheless the following safety measures must be taken when
handling R 600A:
►
provide good ventilation in the appropriate rooms (open
windows and doors)
►
Keep ignition sources away
►
No smoking!
►
No naked flames (e.g. gas cooker, candle)
Therefore, never work on the R 600A refrigerant circuit
with a flame and resistance soldering equipment!
2.12.2.2 Filling accuracy
To keep refrigerant losses as low as possible (even a 2 g loss will
significantly impair the function of the refrigerator), the filling hoses
must be as short as possible. This ensures that gas volume remaining
in the test equipment is low and that the appliance is in perfect
working order after the repair.
2.12.2.3 Disposal of compressor oil
The refrigerant dissolved in the oil of the R 600A compressors cannot
be completely removed at a justifiable cost. R 600A compressors
should therefore be completely and hermetically sealed prior to
disposal.
If the compressor oil has to be disposed of separately, comply
with the following:
►
Before removing the oil, evacuate the compressor for at least
15 minutes. In doing so, provide good ventilation or convey
the exhaust gases of the vacuum pump outside.
►
Even following evacuation, R 600A remains dissolved in the
compressor oil, approx. 1 g per 200 ml. The compressor oil
must therefore be disposed of in A1-suitable containers. To
minimise the residual risk, fairly small containers not larger
than 1 litre should be used, as 1 litre of oil contains only
approx. 5 g of R 600A. 20 litres of oil contain approx. 100 g of
dissolved R 600A.
►
The oil recipient must be informed that the oil contains
dissolved R 600A refrigerant and that this refrigertant is
flammable and is explosive in air within the limit 1.3 to
8.5 vol. %.
