TM-9-2320-280-10 HMMWV Operator Manual Download
Page 92 of 405
TM 9-2320-280-10 KEY ITEM AND FUNCTION NOTE The NBC control box for the M997, M997A1, and M997A2 ambulance has seven heater fuses and one spare fuse. 8 NBC control box houses circuitry and controls for the collective NBC protection system. 9 NBC system switch controls operation of the collective NBC protection system. 10 20 amp fuses protect NBC heater circuits from overload damage. 2-43