Atlas Copco QAS 275-325, Instruction Manual

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Operating instructions
Installation
– Place the generator on a horizontal, even and solid
floor. The generator can operate in a slant position
not exceeding 15° (in both senses: front/rear and
left/right).
– The generator should be kept with the doors
closed, in order to avoid the ingress of water and
dust. Dust ingress reduces the lifetime of filters
and may reduce your generator's performance.
– Check that the engine exhaust is not directed
towards people. If the generator is operated
indoors, install an exhaust pipe of sufficient
diameter to duct the engine exhaust towards the
outside. Check for sufficient ventilation so that the
cooling air is not recirculated. If necessary,
consult Atlas Copco.
– Leave enough space for operation, inspection and
maintenance (at least 1 meter at each side).
– Check that the inner earthing system is in
compliance with the local legislation.
– Use coolant for the engine cooling system. Refer
to the Engine instruction book for the proper
coolant mixture.
– Check the tightness of the bolts and nuts.
– Install the earthing rod as near as possible to the
generator and make sure not to have a contact
voltage higher than 25 V.
– Check that the cable end of the earthing rod is
connected to the earth terminal.
In your own interest, always strictly
observe all relevant safety
instructions.
Do not operate the generator in
excess of the limitations mentioned
in the Technical Specifications.
Local rules concerning the setting
up of low voltage power installations
(below 1000 V) must be respected
when connecting site distribution
panels, switch gear or loads to the
generator.
At each start-up and at any time a
new load is connected, the earthing
of the generator must be verified.
Earthing must be done either by the
earthing rod or, if available, by an
existing, suitable earthing
installation. The protective system
against excessive contact voltage is
not effective unless a suitable
earthing is made.
The generator is wired for a TN-
system to IEC 364-3, i.e. one point in
the power source directly earthed -
in this case the neutral. The exposed
conductive parts of the electric
installation must be directly
connected to the functional earth.
If operating the generator in
another power system, e.g. an IT-
system, other protective devices
required for these types must be
installed. In any case only a
qualified electrician is authorized to
remove the connection between the
neutral (N) and earth terminals in
the terminal box of the alternator.
For information about indoor
installation, consult your local Atlas
Copco dealer.