This document is mainly applicable to the following engineers
Technical Support Engineer
Installation Personnel
Maintenance Engineer
1
1 Foreword
This user manual mainly introduces the 48100E ESS series product introduction,
application description, installation instructions, power-on instructions, maintenance
instructions and provides instructions for technical support engineers, maintenance
engineers and users.
Reader
Overview
Signs
The following signs may appear in this article, and their meanings are as follows.
Sign
Meaning
Description
D
a
n
g
er
I
n
d
i
cat
es
a
h
a
z
a
r
d w
i
t
h
a
hi
g
h
l
e
v
e
l
o
f
ris
k t
h
at w
i
ll cau
se
d
e
at
h
or
serio
u
s
inj
u
r
y
i
f
no
t av
oi
d
e
d
Wa
rnin
g
I
n
d
i
cat
es
a
h
a
z
a
r
d w
i
t
h
a m
o
d
er
at
e
ris
k t
h
at may cau
se
d
e
at
h
or
serio
u
s
inj
u
r
y
i
f
no
t av
oi
d
e
d
N
o
t
i
c
e
I
n
d
i
cat
es
a
h
a
z
a
r
d w
i
t
h
a l
o
w l
e
v
e
l
o
f
ris
k t
h
at may cau
se
m
inor
or
m
o
d
er
at
e
h
a
r
m
i
f
no
t av
oi
d
e
d
Expla
n
at
ion
Suppl
e
m
en
ta
r
y
e
xpla
n
at
ion
o
f k
e
y
in
f
or
mat
ion
in
t
he
ma
in
t
e
xt.
"
Expla
n
at
ion"
is
no
t
s
af
e
ty wa
rnin
g
in
f
or
mat
ion
,
and does not involve personal, equipment and
en
v
iron
m
en
tal damag
e
in
f
or
mat
ion
.
DANGER
WARNING
NOTE
ATTENTION