ASL INTERCOM PS 278 User Manual

User Manual PS 278 / Issue 2 © 1996 ASL Intercom, Utrecht, Holland.
2
WARNING
This appliance must be earthed
4.0 MAINS POWER
The PS 278 may be connected to the mains power outlet
to which other audio equipment is connected. The outlet The wires in this mains lead are colour coded in
should have a clean safety earth. Avoid using mains accordance with the following code:
power outlets which also power dimmer controlled lighting
equipment. green and yellow Earth / safety ground
Before connecting the unit to its AC power source, check if Neutral
the mains voltage setting is set in accordance with your brown
local mains voltage. The voltage setting is indicated by a Live
label on the rear panel.
If a change is necessary, the internal mains transformer correspond with the coloured markings identifying the
wiring will need to be reconnected as shown in section 4.3 terminals in your plug, proceed as follows:
Mains Power settings.
Remember that the AC mains fuse will need to be - The wire which is coloured green-and-yellow must be
changed for one of the correct rating as indicated. connected to the terminal in the plug which is marked
The power cord supplied with this unit carries the following coloured green.
information label: - The wire which is coloured blue must be connected to
IMPORTANT
blue
As the colours of the wires in the mains lead may not
with the letter "E", or by the earth symbol which is or
the terminal which is marked with the letter "N" or
coloured black.
- The wire which is coloured brown must be connected
to the terminal which is marked with the letter "L" or
coloured red.
Those units that are supplied to the North American
market will have an integral moulded 3 pin connector
which is provided to satisfy required local standards.
4.1 SAFETY EARTHING
The green-and-yellow wire of the mains cord must always
be connected to the electrical installation safety earth or
ground. It is essential for personal safety as well for proper
operation of the PS 278 and the other connected stations.
This wire is internally connected to all exposed metal
surfaces and any rack framework into which this unit might
be mounted is assumed to be connected to the same
grounding circuit.
The PS 278 employs professionally designed audio input
and output circuits which do not require the disconnection
of any safety earth for the avoidance of hum loops.

ASL INTERCOM PS 278 Specifications

General

Brand	ASL INTERCOM
Model	PS 278
Category	Intercom System
Language	English