munirabbasi Posted November 22, 2020 Share Posted November 22, 2020 Hello Hercules APU & GTC Expertise When GTC is in starter cranking cycle (<35% RPM) Bleed & off load control valve is remain energized but APU (GTC 85-180L/LE) The valve is remain De-energized through out starting cycle till APU On speed relay is energized and the bleed control SW is mounted on APU control panel ,placed to open position. What is reason behind it. Munir Abbasi Home of Hercules Pakistan Quote Link to comment Share on other sites More sharing options...
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