TM 5-2420-232-10
0004
ENGINE COOLING FAN INHIBIT FACILITY CONTINUED
Switch Operation - Continued
0004
CAUTION
The cooling fan inhibit mode is positively switched. Once the mode is operated, the condition will
remain until the switch is operated to re-enable the fan. Do not operate the machine for extended
periods with the fan inhibited. Be aware of the engine coolant temperature. Failure to follow this
caution may lead to damage to equipment.
Inhibit Fan. With the ignition turned ON and the engine running, the fan inhibit facility can be activated. This reduces
1.
drive torque to fan. To activate the facility, press the bottom of the operating switch (Figure 85, Item 1); the switch icon
will illuminate. The EMS unit will show the message "COOL FAN OFF." Press the OK button on the EMS to confirm the
request. The EMS will then inhibit the engine cooling fan. As confirmation the EMS will display the message "COOL
FAN OFF." This message will remain until the fan is enabled. The EMS will also sound a buzzer initially for 5 seconds,
and thereafter for 2 seconds every 10 seconds. A warning light on the front console warning light panel will also be illu-
minated while the fan is deactivated.
Enable Fan. Press the top of the operating switch (Figure 85, Item 1). The switch illumination will be extinguished, the
2.
front console warning light panel light will be extinguished, and the EMS unit will extinguish the text message and silence
the buzzer. When all the warning displays are extinguished, the engine fan will be enabled.
435-A0298
Figure 85. Cooling Fan Inhibit Switch
04
0004-87
Change 1
