2N LiftNet, User Manual

Page: 48 / 99

Audio Unit
– Machine Room
2.4
48
Operating instructions
This unit may only be used by authorised persons such as the lift maintenance staff.
The TRIPHONY button activates voice communication between all units with the same
lift number.
The ALARM button can be used for calls to the dispatching centre. The ALARM button
backlight (not required by standards) allows you to find the unit in a dark
environment.
In both cases, it is necessary to pick up the attached phone.
If the attached phone is picked up and neither ALARM nor TRIPHONY is pressed, you
can make use of other functions; refer to the machine room voice menu.
Before You Start
Requirements

Be sure to connect the telephone set included in the audio unit delivery. No
other telephone type may be used except with the consent of the
manufacturer.

The lift control circuit must be equipped with a function blocking input in case
the
LN is unable to provide connection with the dispatching centre.
Product completeness check
Check the product for completeness before installation please:

1 audio unit

1 telephone set (a separate unit including accessories and the manual)

2 wall dowels

2 dowel screws

7 address setting jumpers
Mounting
Typically, the audio unit including a telephone set is mounted onto a wall using
available dowels and screws. The recommended machine-telephone distance is
approximately 10 cm. The maximum distance is determined by the interconnecting
cable delivered together with the telephone.