System Operation

SYSTEM OPERATION






Air is drawn through the inlet filter 1. to the compressor 2., where it is compressed to 10.0 ±0.5 bar.

Compressor operation activates the diaphragm solenoid valve 12. to prevent air going straight to atmosphere.

Compressed air passes to the air dryer 3. Moisture is removed as air flows through the dryer desiccant. The desiccant in the dryer becomes wet.

Dried air passes to the valve block, through NRV1 to the reservoir 4.

The three non-return valves 6. ensure correct air flow. They also prevent loss of spring pressure if total loss of reservoir pressure occurs.

A pressure switch 5. maintains system pressure between set limits by switching the compressor on and off via an ECU controlled relay.

For air to be admitted to any spring or springs, inlet valve 7. and the relevant air spring solenoid valve or valves 9. must be energized.

For air to be exhausted from any spring, the exhaust valve 8. and the relevant air spring solenoid valve or valves must be energized.

The diaphragm solenoid valve ensures that air exhausted to atmosphere passes through the dryer. This action purges moisture from the desiccant and regenerates the air dryer.

Air is finally exhausted through the system air operated diaphragm valve 13. and to atmosphere through a silencer 14. at the chassis rear crossmember.