Aiphone TB-10M - Manual (Page 3)

PRECAUTIONS ON INSTALLATION & WIRING
★ Do not attempt to install or connect wires on TB-(10,20)M equipment while system's power
supply is turned on.
★ TB-(10,20)M masters, TB-SE subs, and related equipment, except door station, are designed for
indoor use only. Do not install outdoors.
★ Do not connect any other power source than specified on terminals IN AC15-16V or DC18V.
Doing so can damage the TB-M equipment.
★ Do not open any TB-(10, 20)M system components. Ask quaiified personnel.
★ All the products of other manufacturers, power supply, buzzer, etc. used for TB-(10,20)M, are not
within our warranty, and must be used under manufacturer or distributor's specifications and warranty.
★ Do not mount TB-(10,20)M equipment in the following places, as it may cause the system to
malfunction:
• High or extreme cold temperature areas; under direct sunlight, near equipment that varies in
temperature, front of air-conditioner, inside refrigerating warehouse, etc.
• Places subject to moisture or humidity extremes
• Places subject to environmental conditions, such as iron dust, dust, oil, chemicals, etc.
★ TB-(10,20)M is an electrical appliance, which must not be subjected to water, or any other liquid.
★ Weather conditions, such as lightning storms, may cause damage to TB-M equipment. It is suggested
to take protective measures as follows;
• When an AC transformer is used
Install a surge-arrester
(discharging voltage: 100-180V)
at a point close to the output,
taken to earth ground.
AC trans.
Surge-
arrester
TB-10M
TB-20M
AC 15- 16V
or DC 18V
Grounded
When a DC power supply is used:
On the power supply with grounding terminal, be sure to take the terminal to earth ground.
In this case, it is not necessary to connect a surge-arrester.
When using a power supply that has no grounding terminal, install a surge-arrester in the same
manner as stated above. Surge-arrester SA-1 is available from Aiphone.
Cable requirements
Use 2-conductor cable (twisted or non-twisted) homerun to each sub station (0.65 ~ 1.0mm ,
22 ~ 18AWG).
Before TB-(10,20)M is actuaiiy instaiied, the contents on pages 4
and understood.
9 must be thoroughly read