System Operation

SYSTEM OPERATION





NOTE: Numbers refer to pneumatic circuit diagram

Air is drawn through the inlet filter (1) to the compressor (2), where it is compressed to 10 +/- 0,5 bar (145 +/- 7.25 psi ).

Compressed air passes to the air dyer (3) where moisture is removed as it flows through the dryer desiccant. The desiccant in the lower portion of the dryer becomes wet.

Dried air passes through a non-return valve NRV1 to the reservoir (4).

The 3 non-return valves (6) ensure correct air flow. They also prevent loss of spring pressure if total loss of reservoir pressure occurs.

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

For air to be admitted to an air spring (10), the inlet valve (7) must be energised together with the relevant air spring solenoid valve (9).

For air to be exhausted from an air spring, the exhaust valve (8) must be energised together with the relevant air spring solenoid valve.

The solenoid diaphragm valve (12) ensures that all air exhausted to atmosphere passes through the dryer. Exhausted air passes vertically downwards 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) mounted below the valve block.