OPERATING AUXILIARY EOUIPMENT (continued)
During cold-weather operations (outside temperatures below 40°F [4.40C]), turn on your individual M3 heater (4) and
rotate knob (9) clockwise to increase air temperature. Green light (10) should illuminate when knob is rotated. Allow
air to warm for 15 minutes before a attaching hose to canister on face piece.
Disconnect hose assembly (3) from air outlet orifice (2), and connect hose assembly (3) to canister on face piece.
Stopping and Stowing
Turn off M3 heater (4), if applicable.
Turn VFPS control box switch (8) and vehicle MASTER switch to OFF.
Disconnect hose assembly (3) from canister on face piece, and connect hose assembly (3) to air outlet orifice (2).
Remove and stow face piece.
Move spring clip (6) down to cover two air purifier inlet holes (7).