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2.3 Intended Use
The VDD 500 is designed for use as a temperature display and for use in commercial and industrial
refrigeration facilities in accordance with the functional parameters and environmental conditions described in
the instruction manuals.
Read the safety instructions and the instructions for installation and putting into service, operation and
maintenance. THEN start the commissioning and/or operation of the machine / system.
The safety and functionality of the machine / system are only guaranteed for this
intended application. Never use the machine / system, its components, control
components or parts for any other purpose. The system must not be put into operation
until conformity with the applicable EU Directives has been established for the entire
system.
2.4 BGV A3 - Five safety rules
The following rules must be strictly observed!
1. Disconnect:
The entire system to be worked on must be disconnected from the power supply at all poles.
2. Secure against reconnection:
Attach information signs to the disconnected operating equipment stating:
What has been disconnected.
Reason for the disconnection.
Name of the person who made the disconnection.
Reconnection must be prevented using a suitable lock (e.g. padlock).
3. Prove dead (authorised skilled personnel only):
Check voltmeter just before use.
Prove dead on all poles at the disconnection point.
Prove dead on all poles at the work area.
4. Ground and short-circuit:
All electrical parts at the work area
must be grounded and then short-
circuited
.
5. Cover or block off adjacent live parts:
If there is live equipment adjacent to the work area, it must be
covered using appropriate materials (e.g. insulation blankets / plates).
DANGER
Warning of dangerous electrical voltage!
Warning of dangerous electrical voltage! Danger of
electric shock!
Beware of a possible external power supply!
BEFORE
connecting and disconnecting it must be
checked that
no voltage is present
at the controller! Connections/plug connectors of the device may
only be plugged in, removed and/or wired when
no voltage is present
.
