TM 9-2320-280-10
g. Heating Cab with Arctic Heater.
(1) Start engine (para. 2-30).
CAUTION
Do not operate arctic heater in ambient temperatures above 0°F (-18°C),
or with temperature switch in "HI" position, when temperature is above -
25°F (-32°C). Damage to equipment will result.
(2)
Start arctic heater and set temperature switch (3) on heater control box (1) to "LO" position for
temperatures from 0°F (-18°C) to -25°F (-32°C), or “HI" position for temperatures from -25°F (-32°C) to -50°F
(-46°C).
(3)
Set regulator control lever (4) to "DUAL" or "ARCTIC HEATER” position to achieve desired mix of
air.
(4)
Push defrost control knob (8) all the way in to direct airflow to heat ducts.
(5)
Pull temperature control knob (7) all the way out for maximum heat.
(6)
Set standard heater fan switch (6) to desired position to mix air.
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