4
VLC-4 rev.02
VLC-4
1. INTRODUCTION
1.1. Precautions
WARNING: Read and save these in-
structions!
Safety may be jeopardized if the equipment
is used in a manner not specified by the
manufacturer. Carefully read and keep the
following instructions for future reference.
Although fuses at the input and outputs of
the controller protect its circuits in case of
an overload or over-voltage, we recommend
installing an additional protection device on
the controller’s supply circuit.
The room temperature where the controller
is located must always remain between 32°F
and 104°F (0°C to 40°C). Indoor use only!
To avoid exposing the controller to harmful
gases or excessive humidity, it is preferable
to install it in a corridor.
If the equipment is used in a manner not
specified by the manufacturer, the protection
provided by the equipment may be impaired.
Do not spray water on the controller! In
order to clean the control, wipe it with a
damp cloth.
The controller should be opened and inspected
once a year for moisture. Proper care will ex-
tend the life of the control.
Before servicing or cleaning unit, switch
power off at service panel and lock the
switch disconnecting means to prevent
power from being switched accidentally.
When the service disconnecting means
cannot be locked, securely fasten a
prominent warning device, such as a
tag, to the service panel.
1.2.
Symbols of the Manual
Warning. Read the following text
carefully; it contains important
information which, if ignored, may
cause the controller to operate
improperly.
High Voltage. Hazard of electrical
shock. Read the message and follow
the instructions carefully.
Pay attention. The following text
contains very useful information.
Both direct and alternating current
(AC/DC).
Direct current (DC).
Alternating current (AC).
Earth Ground Terminal
Primarily used for functional earth
terminals which are generally asso-
ciated with test and measurement
circuits. These terminals are not for
safety earthing purposes but provide
an earth reference point.
Fuse
For Customer Use:
Enter below the serial
number located on the side of the alarm
system and keep this information for future
reference.
Model: VLC-4
Serial number:
Date installed:
