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PRECAUTIONS ON NHX SYSTEM
PRECAUTIONS ON NHX SYSTEM
WARNIN
. Do not connect a power supply other than Aiphone Model PS-24E or PS-2420 to terminals +,
 on NHX-80X.  Doing so can cause fire or damage to the unit
2. Do not change or modi
y NHX equipment
3.
e 
 equ
pment must not 
e expose
 to water or an
 ot
er 
qu
4. Do not open NHX-80X without first unplu
in
 power supply(ies) to prevent electric shock
. Make sure wires are connected properly before plugging in the power supply
ies
. Keep AC cord free from being pulled or crushed
7.
o not p
ug or unp
ug w
t
 wet 
an
s
. Keep A
 outlet away from moisture and dust
WARNIN
Ne
li
ence could result in death or seriou
njury
RE
A
TI
N
Negligence could result in injury or damag
o propert
ENERAL PRE
AUTI
N
 
ro
t
ons to 
smant
e e
u
ment.
 Prohibitions to sub
ect the equipment t
wa
er
 
a
e t
e un
t to eart
 groun
RE
A
TI
N
.
ount t
e 
-80
 un
t on wa
 
n a conven
ent 
ocat
on, 
ut not w
ere 
t cou
 
e 
um
e
 o
arre
2. Do not install NHX components in any of the followin
 locations, as it may cause the system
to malfunction
 
g
 or extreme co
 temperature area:  un
er 
rect sun
g
t, near equ
pment t
at var
es
n temperature, in 
ront o
 air-conditioner, inside a re
ri
erated area, etc
 
aces su
ect to mo
sture or 
um
ty extremes
  Places sub
ect to environmental conditions, such as oil, dust, chemicals, salt, etc
  Places subject to constant vibration or impact
3. Take to earth ground every bed o
 metal pipe construction to protect Bedside sub stations and
hand-held call buttons from E
D(Electrostatic dischar
e)
ENERAL PRE
AUTI
N
. NHX system is not operable durin
 a power failure
2. In areas where broadcasting station antennas are close by, NHX intercom system may b
ffected b
 radio frequenc
 interference
3. Keep all D
 wirin
 at least 30cm, 20” away from A
100~240V wirin
, fluorescent li
htin
, o
immer switches.  
ross A
 wirin
 at a 90° an
le
4. Do not connect any devices other than the Aiphone Models covered in this Manual
Prior to use, the contents of the 
peration Manual must be thorou
hly read and understood for safe and prope
operations of the NHX system. Please keep this Manual for future reference
Beds
de sub stat
on model
NH-1
A
A or NH-2
A
A are bedside sub stations which can be installed multipl
 in multi-station patient room. Thei
appearance and operation are exactly the same as NH-1
A and NH-2
A, and differ only in lamp li
htin
 conditions o
he corridor when multi
le calls of different levels have been 
laced within a room