TM 9-2320-280-10
(8) Push exhaust diverter cable knob (5) in to shut off heat to engine oil pan.
(9) Start engine (para. 2-30).
(10) If engine fails to start, notify unit maintenance.
d. Stopping Arctic Heater.
Set start switch (2) on heater control box (1) to “OFF" position.
NOTE
The yellow indicator lamp will remain lit and the fan will continue to run until the
heater has purged itself of fuel.
e. Defrosting Windshield in Ambient Temperatures Above -25°F (-32°C).
CAUTION
•
Cab must be heated prior to defrosting, or damage to windshield will occur.
•
Use of the arctic heater to defrost in temperatures above -25°F (-32°C) will damage the
windshield.
•
Do not operate arctic heater with regulator control lever in "STANDARD HEAT" position
and battery box door closed, or damage will occur.
(1)
Start engine with arctic heater assistance.
(2)
Shut off arctic heater.
(3)
Push defroster control knob (8) all the way in to direct air on windshield.
(4)
Pull temperature control knob (7) all the way out for maximum heat.
(5)
Set regulator control lever (4) up to “STANDARD HEAT" position.
(6)
Set standard heater fan switch (6) to "HI" position until windshield is defrosted.
f. Defrosting Windshield in Ambient Temperatures from -25°F (-32°C) to -50°F (-46°C).
(1)
Start engine with arctic heater assistance.
(2)
Set temperature switch (3) on heater control box (1) to “LO" position.
(3)
Set regulator control lever (4) down to "ARCTIC HEAT" position.
(4)
Push defroster control knob (8) all the way in to direct air on windshield.
(5)
Pull temperature control knob (7) all the way out for maximum heat.
(6)
Set standard heater fan switch (6) to "LO" position until windshield is defrosted.
2-162
