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HEAT
PUM
P
WATE
R HEAT ER COMPRE
SSO
R
CR
ITERIA
PAGE
:
10/
30
~o
i
iquid
compress
ion
sound,
current
i
ncreases,
vi
oration
increas
ed,
etc.
occurred. in
order
to
~revent
flui
d
compression,
an auxiliary
reservoir may be
added or the
amount
of
refrigerant
enclosed
may be reduced.
N
o
matter
what
the
conditions,
the
refrigeration system
shoul
d
not have
liquid
to
the compressor back.
U
nder normal operating conditions,
the
superheated
gas
shoul
d
be
returned
to
the
compressor.
18 Purge parts
with dry
nitrogen
or
dry a
ir
to remove
remai
ns in parts
(dust, detergent,
etc.
)
bef
ore assembly of
system.
Time
f ur
purg ing
:
over
one
second
for
pipe
;
over
three seconds
for
heat exchanger.
Purgi
ng
pressure
:
0.
9±0.
lMpaG.
Dew
po
i
nt
of
dry
air
:
Below
-
20°
C
.
The
motor
wi
nding
temperature
should be
l
ess than
149°
Cand
hermet
ic termi
nal
body
temperature
shoul
d be
l
ess
than
177°Cin process of
manufacturing.
19
Appl
y
f
or veh
icle
The compressor
should
not
be used on
moving equipment
such
as
automobiles, t
r
a ins, ships,
etc.
20
Installat
i
on
The
r
otat
ional axi
s
of
compressor
should
be
kept
ver
t
i
cal
dur ing operat
i
on.
But
i
n
actual
appl
i
cat
ion
the axis
i
ncl
ine
must be
wi
t
hin
5°at
a
l
l
directions
during
operation.
21 Pipe
vi
brat
i
on
The
di
spl
acement
of
the
pipes, wh
i
ch
connect
from the
compressor
to
other
parts
of
the
refrigerate-
or
systems,
shoul
d be
l
ess than
0.
8mm(
l/
32")when
t
he
compr
essor is operating at
al
l
owabl
e
r
otati
onal speed range and
vol
tage
r
ange
of
r
ated
±10%
.
Displ
acement
i
n
excess
of
0.
8mm(
l/
32")
will
require
changi
ng
tube
l
ength
and/
or r
out
ing.
22
Connect
ing tube
des
i
gn
In
designi
ng and
r
out
ing tubing
t hat connect
from
t
he
comprssor to t
he
other
par
ts
of the
air
conditioner,
f
ol
l
owing
should
be
considered.
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