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PAF_Herc

Flt Deck Refrigeration Override

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Hello all herc operators / maintainers! Can someone kindly advice on the reason why the aircraft has a flight deck refrigeration shut off valve manual override handle (nav station). What purpose does it serve. Why only for the flight deck air conditioning flow regulator. Thanks in advance.

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Manual override is used to manually operate (turn on or off) the unit in case of electrical control is lost. The flt station is in the pressurized hull, the cargo AC is external. The electrical control for the two units is a different set up as well. 

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