GE PSH23SGNAFBS Series, Technical Service Manual

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Dryer
The refrigeration system must be free from dirt
and moisture. A single particle of dirt, or one drop
of water, can cause the system to fail. For this
reason, a dryer is a necessary component of the
refrigeration system. The dryer consists of a
strainer at the inlet, a molecular sieve of beads,
and a screen at the outlet. The beads have the
ability to attract and absorb molecules of water but
reject the molecules of refrigerant, oil, nitrogen,
and most other substances. The strainer prevents
the beads from spilling into the inlet. The fine
mesh screen prevents particles (including crushed
beads) from plugging the capillary tube. The dryer
is normally located between the outlet of the
condenser and the inlet of the capillary.
GEA01257
CAPILLARY
CONDENSER
COMPRESSOR
SUCTION TUBE
EVAPORATOR
DRYER
STRAINER
MOLECULAR
SIEVE OF BEADS
SCREEN
GEA01258
Filter
A filter is provided in some refrigeration systems
and furnished with some replacement
compressors. The filter has the appearance of a
large diameter dryer. It has a very fine mesh
screen located at the outlet and a solid core, made
of a special porous material, that is capable of
chemically removing contaminants from the
system. An arrow, stamped on the body of the
filter, indicates the proper direction of flow.
A filter/dryer combination is furnished with
replacement compressors for systems using
R134a refrigerant. A new filter/dryer must be
installed any time an R134a system is repaired.
An additional 0.5 oz of refrigerant is required when
a filter/dryer is added to the high side of the
system.