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Repair
8.3.2 Disposing compressor oil
Refrigerant dissolved in the oil of the R600a compressors cannot be completely re-
moved at a justifiable cost. R600a compressors should therefore be completely and
hermetically sealed and disposed of.
After compressor removal its connections must be hermetically sealed
with Lokring blank plugs to prevent the R600a dissolved in the com-
pressor oil from evaporating and flowing out of the connectors during
transportation.
Prerequisite:
Compressor is removed.
1. Dispose the complete compressor hermetically sealed.
2.
If the compressor oil has to be disposed of separately:
1. 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.
2. Add compressor oil to A1-suitable containers of maximum 1 L.
3. Notify the taker of the compressor oil that the refrigerant dissolved in the com-
pressor oil is combustible and explosive.
8.3.3 Preparing refrigerant (R600a)
Required tools:
Pocket scale
VOLTCRAFT, PS-200
Measuring range: 200 g, resolution:
0.01 g
Refrigerant
R600a, 55 g, Isobutane
Service valve
extraction valve for R600a, R12
R600a refrigerant is supplied in bottles. The amount of refrigerant required to fill the cir-
cuit must be measured very accurately. Electronic scales are used for this purpose.
During storage, refrigerant can escape from the bottle through the valve.
The actual capacity can thus deviate from the specified capacity.
1. Weigh the service valve.
2. Add the net weight printed on the bottle to this value.
3. Screw service valve onto the refrigerant bottle.
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4. Weigh the refrigerant bottle with screwed on service valve.
5. Deduct the weight of the service valve and net weight of the refrigerant bottle from
the total weight.
The exact quantity of refrigerant contained in the bottle is established.
6.
[15000780]
Reduce the quantity in the bottle by tapping off gas until there is only the required
quantity of gas left in the cartridge (see appliance rating plate).
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As R600a (isobutane) does not pollute the environment, the surplus refrigerant
[00341006]
can be released on site into the atmosphere – however outside the customer's
house – and the bottle content can be calibrated to the appliance filling
amount. Then the refrigerant circuit is filled with liquid from the bottle adjusted
to the filling amount.
7.
If the amount required is greater than the capacity of a single bottle.
-
Use several bottles respectively.
8.3.4 Evacuating refrigeration circuit (R600a)
Required tools:
Copyright by BSH Hausgeräte GmbH
The amount of refrigerant should be reduced by 1 g if the com-
pressor is not replaced. The refrigerant dissolves in the com-
pressor oil and cannot be fully expelled even by means of evacu-
ation.
Please make sure to measure the quantity of refrigerant exactly!
Page 61 of 73
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