Air Supply System (LVA) Operation
The single stage piston compressor produces a maximum pressure of 13.5 Bar. The com- pressor is maintenance free - provided it is used in a dust free environment. This includes the compressor’s intake air filter.
The compressor is driven by a DC motor that is controlled by the compressor relay through the control module.
When the compressor is activated, the pressure builds up to a working pressure of 11.4 Bar (+0.8/-1.5 Bar). This is controlled through the pressure maintenance valve. The air under pressure is fed through the dryer and check valve to the solenoid valve block for the air springs.
There is one solenoid valve in the valve block for each air strut. This allows the system to compensate for uneven loads in the vehicle and maintain the vehicles ride height at all times.
Pressure is drained through the left or right solenoid valve (energized open) the pressure relief solenoid valve, restricter, check valve and dryer back to the inlet side of the compres- sor pump.