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OM3245 8/11
Key Switch
Key switch (1, Figure 32-8) is a four-position switch
(ACC, OFF, RUN, START). The ACC position is not
currently used.
When the switch is rotated one position clockwise, it
is in the RUN position and all electrical circuits
(except START are activated).
1. With the directional control lever in PARK,
rotate key switch fully clockwise to START
position, and hold this position until engine
starts. START position is spring-loaded to return
to RUN when key is released.
2. After the engine has started, place rest switch
(6, Figure 32-8) in the OFF position to
deactivate the rest mode of operation.
NOTE: The electric cranking motors have a 30 sec-
ond time limit. If the 30 second limit is reached,
cranking will be prohibited for two minutes. After two
minutes, cranking will be allowed. If the 30 second
limit is reached seven consecutive times, the key
switch must be turned to the OFF position. This will
allow the interface module to power down and reset,
which requires seven minutes to complete.
Rotating
Beacon
Light
(optional)
Switch (2, Figure 32-8) controls the
operation of the rotating beacon light.
Switch
Operator Cab And Controls - Section 32
Heated Mirror Switch (optional)
Switch (3, Figure 32-8) controls the
operation of the heated mirrors.
AC Drive System Rest Switch
Rest switch (4, Figure 32-8) is a
rocker switch with a locking device
for the OFF position. A small tab
must be pushed to unlock the switch
before it can be depressed to the
ON position. When in the ON
position, an amber lamp in the
switch will illuminate.
The switch should be in the ON
position to de-energize the AC drive
system whenever the engine is to be shutdown or the
truck will be parked for a length of time with the
engine running. The directional control lever must be
in PARK or NEUTRAL and the vehicle not moving to
enable this function. This will allow the engine to
continue running while the AC drive system is de-
energized.
Amber indicator light (B6, Figure 32-9) in the
overhead panel will illuminate when the rest mode is
activated.
Activation of the rest switch alone DOES NOT
completely ensure that the drive system is safe
to work on. Refer to Section 20, Safety, for more
information on servicing an AC drive truck.
Check all "link-on" or "link energized" indicator
lights to verify that the AC drive system is de-
engergized before performing any maintenance
on the drive system. DO NOT activate the rest
switch while the truck is moving! The truck may
unintentionally
enter
stopping.
Page 32-15
the
rest
mode
after
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Table of Contents
Troubleshooting
