40
F
R
CC.PC.007.B
8
.02
Application guidelines
Installation
System cleanliness
T
he
re
f
rigerant
com
p
ression
s
y
stem
,
regar
dl
ess
o
f
the
t
yp
e
o
f
com
p
ressor
u
se
d,
wi
ll
on
ly p
ro
v
i
d
e
high
e
ffi
cienc
y
an
d
goo
d
re
l
iabi
l
it
y,
a
l
ong
with
a
l
ong
o
p
erating
l
i
f
e
,
i
f
the
s
y
stem
contains
so
l
e
ly
the
re
f
rigerant
an
d
oi
l
it
was
d
esigne
d f
or
. A
n
y
other
s
u
bstances
within
the
s
y
stem
wi
ll
not
im
p
ro
v
e
p
er
f
ormance
an
d,
in
most
cases
,
wi
ll
be
high
ly d
etrimenta
l
to
s
y
stem
o
p
erations
.
T
he
p
resence
o
f
non
-
con
d
ensab
l
e
s
u
bstances
an
d
s
y
stem
contaminants
s
u
ch
as
meta
l
sha
v
ings
,
so
ld
er
an
d fl ux,
ha
v
e
a
negati
v
e
im
p
act
on
com
p
ressor
ser
v
ice
l
i
f
e
.
Man
y
o
f
these
contaminants
are
sma
ll
eno
u
gh
to
p
ass
thro
u
gh
a
mesh
screen
an
d
can
ca
u
se
consi
d
erab
l
e
d
amage
within
a
bearing
assemb
ly.
T
he
u
se
o
f
high
ly
h
y
grosco
p
ic
p
o
ly
o
l
ester
oi
l
in
R
410A
com
p
ressors
re
qu
ires
that
the
oi
l
be
e
xp
ose
d
to
the
atmos
p
here
as
l
itt
l
e
as
p
ossib
l
e
.
S
y
stem
contamination
is
one
o
f
main
f
actors
a
ff
ecting
e
qu
i
p
ment
re
l
iabi
l
it
y
an
d
com
p
ressor
ser
v
ice
l
i
f
e
. I
t
is
im
p
ortant
there
f
ore
to
take
s
y
stem
c
l
ean
l
iness
into
acco
u
nt
when
assemb
l
ing
a
re
f
rigeration
s
y
stem
.
Du
ring
the
man
uf
act
u
ring
p
rocess
,
circ
u
it
contamination
ma
y
be
ca
u
se
d
b
y:
• B
ra
z
ing
an
d
we
ld
ing
o
x
i
d
es
,
• F
i
l
ings
an
d p
artic
l
es
f
rom
the
remo
v
a
l
o
f
b
u
rrs
in
p
i
p
e
-
work
,
• B
ra
z
ing
fl ux,
•
Moist
u
re
an
d
air
.
C
onse
qu
ent
ly,
when
b
u
i
ld
ing
e
qu
i
p
ment
an
d
assemb
l
ies
,
the
p
reca
u
tions
l
iste
d
in
the
f
o
ll
owing
p
aragra
p
hs
m
u
st
be
taken
.
Tubing
O
n
ly u
se
c
l
ean
an
d d
eh
yd
rate
d
re
f
rigeration
-
gra
d
e
co
pp
er
t
u
bing
. Tu
be
-
c
u
tting
m
u
st
be
carrie
d
o
u
t
so
as
not
to
d
e
f
orm
the
t
u
bing
ro
u
n
d
ness
an
d
to
ens
u
re
that
no
f
oreign
d
ebris
remains
within
the
t
u
bing
. O
n
ly
re
f
rigerant
gra
d
e
fi
ttings
sho
uld
be
u
se
d
an
d
these
m
u
st
be
o
f
both
a
d
esign
an
d
si
z
e
to
a
ll
ow
f
or
a
minim
u
m
p
ress
u
re
d
ro
p
thro
u
gh
the
com
pl
ete
d
assemb
ly.
F
o
ll
ow
the
bra
z
ing
instr
u
ctions
on
ne
x
t
p
ages
.
Ne
v
er
d
ri
ll
ho
l
es
into
p
arts
o
f
the
p
i
p
e
-
work
where
fi l
ings
an
d p
artic
l
es
can
not
be
remo
v
e
d.
Brazing and soldering
W
hen
bra
z
ing
co
pp
er
-
to
-
co
pp
er
connections
,
the
u
se
o
f
co
pp
er
/p
hos
p
hor
u
s
bra
z
ing
a
ll
o
y
containing
5
%
si
lv
er
or
more
with
a
me
l
ting
tem
p
erat
u
re
o
f
be
l
ow
8
00°C
is
recommen
d
e
d.
No
fl ux
is
re
qu
ire
d du
ring
bra
z
ing
.
Copper to copper
connections
D
o
not
ben
d
the
com
p
ressor
d
ischarge
or
s
u
ction
l
ines
or
f
orce
s
y
stem
p
i
p
ing
into
the
com
p
ressor
connections
,
beca
u
se
this
wi
ll
increase
stresses
that
are
a
p
otentia
l
ca
u
se
o
f f
ai
lu
re
.
Recommen
d
e
d
bra
z
ing
p
roce
du
res
an
d
materia
l,
are
d
escribe
d
section
"C
om
p
ressor
connection
".
T
hese
o
p
erations
m
u
st
be
p
er
f
orme
d
b
y
a
qu
a
l
i
fi
e
d p
ersonne
l
in
com
pl
iance
with
a
ll
p
ertinent
p
ractices
an
d
sa
f
et
y p
roce
du
res
.
Dissimilar metals
connection
W
hen
mani
pul
ating
d
issimi
l
ar
meta
l
s
s
u
ch
as
co
pp
er
an
d
brass
or
stee
l,
the
u
se
o
f
si
lv
er
so
ld
er
(
5
%
or
more
)
an
d
anti
-
o
x
i
d
ant
fl ux
is
necessar
y.
Pl
ease
contact
D
an
f
oss
T
echnica
l
s
upp
ort
f
or
an
y
d
e
v
iation
f
rom
this
g
u
i
d
e
l
ines
.
Compressor connection
W
hen
bra
z
ing
the
com
p
ressor
fi
ttings
, d
o
not
o
v
erheat
the
com
p
ressor
she
ll,
which
co
uld
se
v
ere
ly d
amage
certain
interna
l
com
p
onents
du
e
to
e
x
cessi
v
e
heating
. U
se
o
f
a
heat
shie
ld
an
d/
or
a
heat
-
absorbent
com
p
o
u
n
d
is
high
ly
recommen
d
e
d. Du
e
to
the
re
l
ati
v
e
ly
si
z
ab
l
e
t
u
bing
an
d fi
tting
d
iameters
a
d
o
u
b
l
e
-
ti
pp
e
d
torch
u
sing
acet
yl
ene
is
recommen
d
e
d
f
or
bra
z
ing
o
p
eration
on
D
an
f
oss
S
H
scro
ll
com
p
ressors
.
heat
shie
ld
C
B
A