HYDRAMECHANICAL PROTECTIVE SYSTEM
SYSTEMS OPERATION
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. 238
