Electrolux Built-in 42" Service Manual page 20
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Also See for Built-in 42":
- Service manual (58 pages) ,
- Use & care manual (44 pages) ,
- Tips and recipes (36 pages)
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HOT
TUBE
Evacuating and Recharging Connections
Refrigerant leaks
A system with R-134a and Ester oil will become
saturated with moisture much faster than a system with
R-12 and mineral oil. The compressor in an R-134a system
will have to be replaced if the product has had a low side
leak.
R-134a refrigerant molecules are smaller than R-12
molecules. This means that R-134a will pass more minor
leaks and the rate of flow will be greater than for R-12.
Therefore, it is now more important than ever to follow
good brazing practices. Use a good grade of silver solder.
45% silver solder is recommended.
leak detection
R-134a system leaks can be pinpointed by means of
an electronic leak detector or by bubble solution.
Electronic leak detectors for R-134a service are
currently available from several manufacturers. The least
expensive models are non-selective detectors that will
detect any type of emission or vapor present, regardless of
its chemical composition. Some non-selective detectors
designed for use with R-12 may have a much lower
sensitivity when used with R-134a. However, newly
designed detectors with good R-134a sensitivity are now
available. Be sure to consult with the manufacturer before
selecting or using a non-selective detector with R-134a.
Halogen-specific detectors use a specialized sensor
that allows detection of compounds containing chlorine,
fluorine, bromine, and iodine without being activiated by
other species. The major advantage of this type of detector
is a reduction in the number of "nuisance alarms".
Halogen-specific detectors are generally more expensive
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TEE
EVAPORATOR
FITTING
FILTER
DRIER
CONDENSER
PROCESS TUBE
ADAPTERS
COMPOUND
PRESSURE
GAUGE
GAUGE
GAGE
MANIFOLD
COMPRESSOR
2 STAGE VACUUM
than non-selective detectors but feature higher
sensitivity.R-134a properties
R-134a properties
The properties of R-134a are very similar to those of
R12. The principal data for the two refrigerants are shown
in the chart below.
N
A
M
E
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20
HAND SHUTOFF
VALVE
HEATED
CHARGING
CYLINDER
Figure
E4
PUMP
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e
1
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