Patent ID: 6342093
Filing Date: 2002-01-29
Classification: B01D

Abstract:
An air drier arrangement comprising an air compressor, an air drier, a first air conduit from the air compressor to the air drier, a second air conduit from the air drier to an air tank or an air consuming device, and a separate signal air pipe from the air drier to the air compressor including a switch-over valve operable between a first position in which air passes through the switch-over valve in a governor mode wherein air flow from the air compressor ceases in an unloaded state, and a second position in which the signal air pipe from the air drier is closed and the signal air pipe to the air compressor is open to the atmosphere in an unloader mode wherein non-pressurized air is transported through the first air conduit from the air compressor to the air drier and out into the atmosphere through an unloader valve.