User Manual of Fiber Laser Chiller
-19-
8
maintaining
For
ma
inten
a
n
c
e,equipment
m
u
s
t
b
e
sh
ut
d
own
, c
ut
off
t
h
e
power
s
upply
, a
n
d ca
n
only
b
e
oper
a
te
d a
fter
3 m
inute
s,
ot
h
erwi
s
e
t
h
ere
will
b
e
a
ri
sk
of
ele
c
tri
c sh
o
ck. Wh
en
t
h
e
amb
ient
te
m
per
a
ture
i
s
lower
t
ha
n
2°C,
t
h
e
intern
a
l
w
a
ter
m
u
s
t
b
e
d
r
a
ine
d
w
h
en
t
h
e
mach
ine
i
s sh
ut
d
own
for
a
lon
g
ti
m
e
.
8.1
D u s t p r e v e n t i o n i n s u m m e r
I
n
s
u
mm
er
,
ple
as
e
c
le
a
n
t
h
e
c
on
d
en
s
er
a
n
d d
u
s
t
filter
of
t
h
e
equip
m
ent
ab
out
15 da
y
s, as sh
own
in
F
i
g
ure
11.
Figure
11
Cleaning
and
dust
removal
process
of
the
dust
screen
8.2
W
i n t e r
a
n t i f r e e
z
e
Figure
12
Winter
anti-freezing
maintenance
Wh
en
t
h
e
equip
m
ent
i
s b
ein
g
tr
a
n
s
porte
d
or
not
in
u
s
e
for
a
lon
g
ti
m
e
,
t
h
e
w
a
ter
in
t
h
e
w
a
ter
t
a
n
k sh
oul
d
b
e
d
r
a
ine
d
t
h
rou
gh
t
h
e
d
r
a
in
va
l
v
e
, a
n
d
t
h
e
d
r
a
in
sc
rew
un
d
er
t
h
e
w
a
ter
pu
m
p
sh
oul
d b
e
loo
s
ene
d
to
d
r
a
in
t
h
e
re
ma
inin
g
w
a
ter
in
t
h
e
w
a
ter
pu
m
p
, as sh
own
in
F
i
g
ure
12.
I
f
t
h
e
amb
ient
te
m
per
a
ture
a
t
ni
gh
t
i
s
lower
t
ha
n
2℃,
it
i
s
re
c
o
mm
en
d
e
d
t
ha
t
t
h
e
c
u
s
to
m
er
d
oe
s
not
s
top
t
h
e
mach
ine
or
add a
ntifree
z
e
.
T
h
e
v
olu
m
e
r
a
tio
of
et
h
ylene
g
ly
c
ol
i
s s
ele
c
te
d acc
or
d
in
g
to
T
ab
le
1.
T
h
e
pre
v
entin
g
free
z
in
g
point
i
s
equ
a
l
to
t
h
e
amb
ient
te
m
per
a
ture
of
t
h
e
equip
m
ent
m
inu
s ab
out
5℃. Wh
en
t
h
e
av
er
ag
e
da
ily
te
m
per
a
ture
i
s h
i
gh
er
t
ha
n
5°C,
repl
ac
e
t
h
e
w
a
ter
c
ont
a
inin
g a
ntifree
z
e
wit
h s
oftene
d
w
a
ter
.
Compressed air blowing
dustproof mesh
Wash with water and then dry
First open the drain
valve to drain the
water
Then
insert
the
air
gun
into
the
water
outlet
to
inflate
and
drain
Remove the pump exhaust screw
Remove the screw at the lower end of the
water pump
