TM 10-3930-675-100005 00-22OPERATION UNDER USUAL CONDITIONS - CONTINUED0005 00OPERATE LIFTING BOOM AND TOPHANDLER - CONTINUEDe.Deep Well Container Lifting/Stacking.OPERATE HEATER AND DEFROSTER1.Start engine and bring truck to normal operating temperature.2.Rotate heater and defroster selection switch clockwise to desired position, to select air flow direction to windshield, oper-ator or both.3.Rotate heater temperature control switch clockwise to desired position, to control heater output within the cab.4.Rotate fan switch clockwise to adjust fan speed from low to high.5.Press cab air circulation control switch to select either of two options, recirculated or fresh air within the cab.NOTEAir vents are located at each rear corner of cab, as well as on instrument panel.6.Control air flow as needed by adjusting louvered openings of air vents.
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