TM-9-2320-280-10

TRUCK, UTILITY: M998 SERIES

OPERATOR’S MANUAL

JANUARY 1996

TM-9-2320-280-10 - Page 222 of 405

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), or

without standard heater fan on.

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 “ARCTIC HEAT ” position.

(4)

Pull defrost control knob (8) all the way out 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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