OPERATE IN EXTREME COLD (Cont).
Have Unit Maintenance check and service cooling sys-
tem to ensure truck is adequately protected against extreme cold. Ensure transmis-
sion is in NEUTRAL (N) position and vehicle tires are blocked.
Operate Artic Personnel Heater Kit.
Auxiliary heater (AUX HTR) indicator light illuminates
only when burner is lit. Indicator light turns on and off
automatically. Initial time required for indicator light to
light depends on outside temperature.
Place AUX HTR switch (2) in ON position. AUX HTR light (1)
will light when heater burner is lit.
If Hi-LO switch is set to HI position, heater will automati-
cally switch to low heat when temperature of coolant at
heater inlet reaches 160°F. LO position is suitable when
heater operates over an extended period.
Place HI-LO switch (3) to desired setting.
To turn heater off, place AUX HTR switch (2) to OFF position.
Heater burner will stop and AUX HTR light will go out within a few minutes, but blower
will continue to run for approximately one minute.
Operate Arctic Swing Fire Heater Kit.
Check fuel level in heater (7). Add fuel as required.
Check air shutoff valve by pushing pressure pin (10). Pres-
sure pin is spring-loaded and must bounce back.
Loosen wing nut (9) fully and check gasket for proper posi-
Push heater (7) in heat exchanger (8) and tighten wingnut