Ammann Rammax 1515-M - Page 109

109
Rammax 1515-M/-MC/-MI/-MCI
Index: a; Issued 08/2010
Fuel shut-off valve
Job of the fuel shut-off valve: Stops the engine. The fuel
shut-off valve interrupts the fuel supply going to the engine,
if:
The ignition is switched off.
The inclination encoder has tripped
The fuel shut-off valve is a 2/4-way valve with an electrical
solenoid. It can move into two switch positions and it has
four connections. These are identied by the numbers 1 - 4.
Power to the fuel shut-off valve is disconnected whilst the
engine is running. The solenoid is de-activated. The fuel
shut-off valve then has the same switching state as shown in
Fig. 1: The fuel ows through the valve from Connection 1 to
connection 3 and from Connection 2 to Connection 4.
Fig 1: Flow direction through the fuel shut-off valve when running
DIESEL
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43
The solenoid is activated when the engine is stopped. The
fuel shut-off valve then has the same switching state as
shown in Fig. 2: The fuel ows through the valve from Con-
nection 1 to connection 2 and from Connection 3 to Connec-
tion 4.
Fig. 2: Flow direction through the fuel shut-off valve when the engine is
stopped
DIESEL
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43
1)
2)
appendix