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| Illustration 1 | g01181998 |
(1) Exhaust port for governor (2) Governor (3) Delivery port for governor (4) Supply port of governor (5) Air compressor (6) Air inlet (7) Air discharge (8) Air dryer (9) Inlet valve (10) Discharge valve (11) Air reservoir (12) Piston (13) Stroke (both directions) (14) Unloader port or air compressor (15) Supply port for air dryer (16) Control port for air dryer (17) Delivery port for air dryer | |
The compressed air will go to the inlet port (15) for the air dryer (8). The dry compressed air goes to the reservoir (11) for the air supply. The air pressure in reservoir (11) will eventually reach the pressure setting of the governor (2) .
The compressed air will flow from reservoir (11) to the supply port of the governor (4). Governor (2) will allow the compressed air to pass from the reservoir (11) through the governor (2) .
The compressed air will flow from the delivery port (3) of the governor (2) to the unloader port (14) of the air compressor (5). The compressed air will activate the unloader system of the air compressor (5). The discharge valve (10) of the air compressor (5) is held closed by the pressure that is in the tank and the pressure that is in the line. The inlet valve (9) of the air compressor (5) will be held open by the unloader mechanism.
When the air pressure in the air reservoir (11) drops to the minimum pressure setting of the governor (2), the governor (2) will no longer allow the compressed air to pass through the governor (2). The governor (2) will release the compressed air that is in the line between the delivery port (3) for the governor (2) and the control ports (16) for the air dryer (8) and the unloader port for the air compressor (5).
The pressure will be released through the exhaust port (1) for the governor (2). This allows the inlet valve (9) of the air compressor (5) and the dryer purge valve to close.
The compression of air will resume.