User Manual

Chapter 11
BOSCH HDI EDC 15C2 INJECTION SYSTEM AND PARTICLE FILTER
87
IV - SAFETY VALVE
A - ROLE
Role of the safety valve:
• sealing function (prevents the solvent from evaporating and the ingress of dust,
mud and water),
• overturn safety function,
• breather for the additive tank depending on the additive level.
B - DESCRIPTION
SDI031D
6
7
8
9
9
8
7
6
6 - Vacuum valve (0.036 bar)
7 - Pressure relief valve (0.05 +/- 0.01 bar)
8 - Vacuum valve return spring
9 - Pressure relief valve return spring
Operation:
• the valve (6) acts as a breather for the additive tank depending on the additive
level,
• the valve (8) performs the sealing and overturn safety function.
cardiagn.com