V6R VRF 50Hz
115
P
art 6 - Diagnosis and T
roubleshooting
Step 8: Vacuum drying and refrigerant charging
Once
all
the
compressors
and
other
components
have
been
fully
connected,
vacuum
dry
the
system
and
recharge
refrigerant.
Refer
to
the
V6R
Engineering
Data
Book,
Part
3.
Figure 6-2.10: Inspecting compressor oil
This
oil
is
black
-
it
has
been
carbonized
This
oil
is
a
little
yellow,
but
is
clear
and
transparent
and
the
condition
is
acceptable
This
oil
is
still
transparent
but
there
are
impurities
which
may
clog
the
filter
Cloudy
or
gray
oil
indicates
abnormal
system
operation
This
oil
contains
particles
of
copper
