OPERATING AND INSTALLATION INSTRUCTIONS LG 250 A
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• Warning: hazardous electrical
voltage!
• Disregarding the hazard may
result in death, injury or mate-
rial damage.
• Before carrying out any work on live
parts, the unit must always be dis-
connected completely from the power
supply (all poles) and secured against
being switched back on!
The earthed connector-system
to the mains supply enables
all-pole disconnection of the unit
from the power supply
Electrical connection work as well as
tasks involving electrical plant compo-
nents may only be performed by author-
ised electrical engineers in accordance
with national and local regulations.
Before opening the unit and when carry-
ing out work on the unit e.g. maintenance
work and repairs, the unit must be isolat-
ed from the mains (all poles disconnected)
and secured against being switched back
on for the duration of the work.
The LG 250 A compact ventilation unit is
designed for a 230 V/50 Hz power supply.
The unit is not designed for connection to
a 400 V/50 Hz, three-phase supply.
Work practices that could
compromise the unit’s safety
are prohibited! To ensure safe
operation, safety devices must not be
removed or bypassed.
Electrical equipment and the unit’s
warning and protective devices must be
inspected regularly to ensure that they
are in perfect working order. In the event
of faults in the electrical power supply
or identification of defects e.g. loose con-
nections or burnt cables, the unit must be
switched off immediately.
Damaged or faulty power supply cables to
the unit must be repaired immediately to
avoid hazards.
The unit may not be operated until safe
operational conditions are restored.
Fault finding and immediate remediation
of electrical defects and malfunctions
shall be carried out by authorised electri-
cians only. All protective measures must
be inspected (e.g. earth resistance etc.)
after completion of electrical work on the
unit.
For details, see Section 15: “Electrical
Connections”.
The operation of the ventilation
unit is permitted only if all built-
in parts provided e.g. silencers
etc., have been properly connected.
The system must be taken out
of operation immediately in the
event of any fault or damage
that may cause harm to persons or
property. Further use must be actively
prevented until the unit is fully repaired!
ELECTRICAL CONNECTION WORK
PLANT OPERATION
