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3.3.7 Frame and axles
The compressor/engine unit is supported on a frame
which also carries the compressor cooling block.
The front axle is provided with a steering gear and a
hinged towbar with towing eye. The towbar can be
locked in the raised position.
The unit is equipped with a parking brake, operated
by a handle close to the towbar.
3.3.8 Bodywork
The bodywork has openings for the intake, cooling
and exhaust air and specially hinged doors for
maintenance and service operations. The bodywork is
internally lined with sound-absorbing material. The
air outlet valves are in the frame, at the back.
3.3.9 Fuel tanks
The unit has two interconnected fuel tanks, but can
also be connected to an external fuel tank.
3.3.10 Control panel
The control panel is located behind a small door at the
rear right-hand side of the unit.
3.3.11 Data plate
The compressor is furnished with a data plate
showing among others type, serial number and
nominal working pressure.
3.3.12 Automatic fire suppression
system
The PNS 1250 is fitted with an automatic fire
suppression system. This installation will respond
automatically to a fire in the engine compartment by
switching off the engine and spreading extinguishing
powder throughout the engine compartment.
In case of an extinguishing powder release by the fire
suppression system, please be careful when opening
the doors of the compressor. Although this fire
suppression system is designed and tested to
extinguish most common compressor fires, there is
always a chance that not all flames are extinguished.
After activation of the system always contact Atlas
Copco immediately to investigate and repair the
machine.
For more detailed information on the Automatic fire
suppression system, refer to “Operating the automatic
fire suppression system” on page 49.
Repairs and maintenance must be
done by authorized personnel only.
Please contact Atlas Copco if the
fire suppression system shows any
irregularities.
To avoid battery drainage during
long-term storage, please remove
the internal battery from the Ansul
controller. After restoring the power
supply, push the reset button to
reactivate the system.
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