TM 10-4930-236-13&PTable 2-1. Controls and Indicators - CONTCONTROL ORKEYINDICATORFUNCTION3Instruction PlateProvides information for replacement of the filter elements in thefilter/separator4.Differential PressureSwitch GageIndicates the difference in pressure between the inlet and outlet ofthe filter/separator in PSID (Pounds per Square Inch Differential).The PSID indicating arc on the gauge is colored to coincide withthe information on the instruction plate2-2
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