– 2 –
CAUTION
★
LEM equipment, except for LE-D or LE-DA, is designed for indoor use only.
Do not install outdoors.
★
LEM is an electrical device, which must not be exposed to water or any other liquid.
★
Do not connect AC wires to any terminal on any unit.
★
Do not connect any power source other than specified to ter, – on LEM.
Doing so can cause fire or damage the unit.
★
Unplug power supply while making any wire terminations.
★
Do not install LEM equipment in any of the following locations, as it may cause the system to malfunction;
– High or extreme cold temperature areas: under direct sunlight, near equipment that varies in temperature, in
front of air-conditioner, inside a refrigerated area, etc.
– Places subject to moisture or humidity extremes,
– Places subject to environmental conditions, such as oil, dust, chemicals, salt, etc.
– Places subject to constant vibration or impact.
IMPORTANT
–Observe the following to prevent fire, injury to people, malfunction, or damage to the equipment.
★
Do not open the LEM equipment except for wiring. Ask qualified personnel.
★
Do not change or modify LEM.
★
Keep moisture away from unit and AC cord.
★
Keep all DC wiring at least 30cm, 20” away from AC wiring, fluorescent lighting, or dimmer switches. Cross AC wiring
at a 90° angle.
★
Keep AC cord (power supply) and DC wiring from being pulled or crushed.
★
LEM is not operable during a power failure.
★
In areas where broadcasting station antennas are close by, intercom system may be affected by radio frequency
interference.
★
Make sure wires are connected properly before plugging in DC power supply.
★
Severe weather conditions, such as lightning storms, may cause damage to LEM equipment. We recommend that
power surge protection be installed as follows: (However, this does not guarantee that no damage will occur.
䡲
Before actually mounting the LEM equipment, the contents of this Manual must be
t
horoughly read and understood.
+, –
:
6V DC power supply
E
:
Common communication
1 ~ 3
: Sub 1 ~ 3 calling and communication
Install a surge-arrester( discharging
voltage: 100
〜
180V) at a point
close to the output, taken to earth
ground.
Grounded
Surge-arrester
(Aiphone model:SA-1)
PS-6D or SKK-620
LEM
6V DC
Red (+)
White or Black(-)
-
+
3
3
PRECAUTIONS ON INSTALLATION & WIRING
• If the power supply has a GROUND
terminal, take it to an earth ground.
In this case, a separate surge
arrester is not necessary.
• When using a power supply that
has no GROUND terminal, install a
surge arrester near the output as
shown.
4
4
4
4
WIRING
LEM-1
LEM-3
䡵
Actual terminal locations
E
1
–
+
E
1
2
3
–
+