HYDRAMECHANICAL PROTECTIVE SYSTEM
SCHEMATIC NO. 19 (REMOTE NORMAL SHUTOFF)
15. Diverter valve orifice. 16. Remote normal shutoff valve. 17. Fuel shutoff actuator. 18. Diverter valve. 20.
Start-up override valve.
REMOTE NORMAL SHUTOFF
Make Reference to Schematic No. 19
The remote normal shutoff is an option that can
be used with the hydramechanical protective
system. An air or electric operated remote
normal shutoff valve ( 16) is installed in the
diverter valve return line. When remote normal
shutoff valve (16) is operated, the outlet of the
diverter valve is stopped. The oil pressure
becomes equal on both sides of diverter valve
orifice (15). Spring force will move the valve
spool of diverter valve (18) to make an alignment
of the oil passage with the oil line to fuel shutoff
actuator (17). Oil pressure can now activate fuel
shutoff actuator (17), which causes the governor
to move the fuel control linkage to the
"SHUTOFF" position and shutdown the engine.