6
Description of components
DESCRIPTION OF BRAKE COMPONENTS
1-9
1.7 LOW-PRESSURE SWITCH
Purpose
The purpose of the low-pressure switch is to
switch off the warning lights when a preset
pressure is reached. The switch-off pressure is
5 - 5.5 bar.
1.
Coupling piece
2.
Brake-light switch
3.
Pressure switch for parking-brake valve
4.
Sealing rings
5.
Sealing rings
Operation
If the preset pressure in the air pipe is reached,
the existing connection of both contacts (3) and
(4) is cut off by the diaphragm (1). If the
pressure falls below the preset value, both
contacts are connected again.
R 600104
3
4
5
2
6
1
5
1
2
3
4
R 600106
3
ǹ 0006