Atlas Copco QAS 200 VoD S3A ESF - External Fuel Tank Connection

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2.3.8 External fuel tank connection
The external fuel tank connection allows to bypass
the internal fuel tank and to connect an external fuel
tank to the unit.
Make sure to connect the fuel supply line as well as
the fuel return line. Connections to fuel lines ought to
be air-tight to prevent air from entering the fuel
system.
Position 1: Indicates that the
fuel supply line to the engine is
connected to the internal fuel
tank.
Position 2: Indicates that the
fuel supply line to the engine is
connected to the external fuel
tank.