User Manual of Fiber Laser Chiller
-20-
Table
1
Correspondence
between
different
volume
ratios
of
ethylene
glycol
and
freezing
point
v
olume ratio
/%
freezing point
/℃
v
olume ratio
/%
freezing point
/℃
v
olume ratio
/%
freezing point
/℃
1.8
-0.6
26.0
-13.0
51.9
-41.0
3.6
-1.3
28.0
-15.0
53.9
-44.0
5.4
-2.0
29.9
-17.0
56.0
-48.0
7.2
-2.7
31.9
-18.0
78.9
-47.0
9.1
-3.5
33.8
-20.0
81.0
-43.0
10.9
-4.4
35.8
-22.0
83.1
-40.0
12.8
-5.3
37.8
-24.0
85.2
-36.0
14.6
-6.3
39.8
-26.0
87.3
-33.0
16.5
-7.3
41.8
-28.0
89.4
-29.0
18.4
-8.0
43.8
-31.0
91.5
-26.0
20.3
-9.0
45.8
-33.0
93.6
-23.0
22.2
-11.0
47.8
-36.0
95.8
-19.0
24.1
-12.0
49.8
-38.0
100
-13.0
8.3
D
a
i l y
m a
i n t e n
a
n
c
e
T
h
e
wor
k
in
g sc
ene
of
t
h
e
fi
b
er
l
as
er
ch
iller
i
s v
ery
bad. I
n
or
d
er
to
en
s
ure
t
h
e
g
oo
d
perfor
ma
n
c
e
of
t
h
e
equip
m
ent
a
n
d
e
x
ten
d
t
h
e
s
er
v
i
c
e
life
of
t
h
e
equip
m
ent
,
t
h
e
equip
m
ent
nee
ds
to
b
e
ma
int
a
ine
d.
T
h
e
frequen
c
y
of
ma
inten
a
n
c
e
i
s
on
c
e
a
wee
k.
T
h
e
ma
inten
a
n
c
e
wor
k
in
c
lu
d
e
s b
ut
i
s
not
li
m
ite
d
to
t
h
e
followin
g as
pe
c
t
s
of
wor
k
Ch
e
ck
t
h
e
c
on
d
en
s
er
, ch
e
ck
w
h
et
h
er
t
h
e
a
ir
d
u
c
t
i
s b
lo
ck
e
d b
y
forei
g
n
ma
tter
, a
n
d
w
h
et
h
er
t
h
e
a
ir
inlet
a
n
d
outlet
a
roun
d
t
h
e
equip
m
ent
i
s sm
oot
h
;
C
le
a
n
t
h
e
c
on
d
en
s
er
a
n
d c
le
a
n
t
h
e
d
u
s
t
-
proof
net;
Ch
e
ck
t
h
e
c
oolin
g m
e
d
iu
m
for
forei
g
n
ma
tter
,
w
h
et
h
er
it
b
ree
ds m
i
c
roor
ga
ni
sms,
et
c. G
ener
a
lly
,
repl
ac
e
t
h
e
c
oolin
g m
e
d
iu
m
wit
h
in
15-20
da
y
s.
T
h
e
c
oolin
g m
e
d
iu
m m
u
s
t
b
e
pure
w
a
ter
,
d
i
s
tille
d
w
a
ter
or
h
i
gh-
purity
w
a
ter
;
Ch
e
ck
w
h
et
h
er
t
h
e
w
a
ter
c
onne
c
tion
i
s
loo
s
e
a
n
d
w
h
et
h
er
t
h
e
w
a
ter
pu
m
p
i
s
le
ak
in
g
;
Ch
e
ck
t
h
e
w
a
ter
t
a
n
k a
n
d c
le
a
n
up
t
h
e
d
irt
d
epo
s
ite
d
in
s
i
d
e
t
h
e
w
a
ter
t
a
n
k
;
C
le
a
n
t
h
e
filter
in
t
h
e
w
a
ter
c
ir
c
uit
of
t
h
e
equip
m
ent
re
g
ul
a
rly
. G
ener
a
lly
,
t
h
e
filter
i
s c
le
a
ne
d
on
c
e
e
v
ery
7-10
da
y
s.
T
h
e
two
type
s
of
filter
s c
o
mm
only
u
s
e
d b
y
our
c
o
m
p
a
ny
a
re
sh
own
in
F
i
g
ure
13.
T
h
e
Y-
type
filter
i
s
in
s
t
a
lle
d a
t
t
h
e
w
a
ter
pu
m
p
s
u
c
tion
or
t
h
e
equip
m
ent
outlet
wit
h a b
uilt
-
in
s
t
a
inle
ss
s
teel
filter
.
T
h
e
d
e
v
i
c
e
i
s
pl
ac
e
d
in
t
h
e
w
a
ter
t
a
n
k
;
