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Operating instructions
Installation
– Place the generator on a horizontal, even and solid floor.
– 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 Chicago Pneumatic.
– 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.
Connecting the generator
Precautions for non-linear and sensitive
loads
The most common non-linear, 3-phase loads are thyristor/
rectifier-controlled loads, such as convertors supplying
voltage to variable speed motors, uninterruptable power
supplies and Telecom supplies. Gas-discharge lighting
arranged in single-phase circuits generate high 3rd
harmonics and risk for excessive neutral current.
Loads most sensitive to voltage distortion include
incandescent lamps, discharge lamps, computers, X-ray
equipment, audio amplifiers and elevators.
Consult Chicago Pneumatic for measures against the
adverse influence of non-linear loads.
Quality, minimum section and maximum
length of cables
The cable connected to the terminal board of the generator
must be selected in accordance with local legislation. The
type of cable, its rated voltage and current carrying
capacity are determined by installation conditions, stress
and ambient temperature. For flexible wiring, rubber-
sheathed, flexible core conductors of the type H07 RN-F
(Cenelec HD.22) or better must be used.
The following table indicates the maximum allowable 3-
phase currents (in A), in an ambient temperature of 40°C,
for cable types (multiple and single core PVC insulated
conductors and H07 RN-F multiple core conductors) and
wire sections as listed, in accordance with VDE 0298
installation method C3. Local regulations remain
applicable if they are stricter than those proposed below.
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.
Non-linear loads draw currents with high
contents in harmonics, causing distortion in
the wave form of the voltage generated by
the alternator.
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