Manitowoc 999, Service And Maintenance Manual

Page: 139 / 298

Reference
Only
Manitowoc
Published 05-16-17, Control # 233-03
3-29
999 SERVICE/MAINTENANCE MANUAL ELECTRIC SYSTEM
3
System Faults
Table 3-4 lists system faults which can be displayed.
When one or more system faults occur, the system fault alert
(red light and beeper in cab) turns on to warn the operator. At
the same time, the system fault display immediately appears
(see
Figure 3-12 ) and automatically scrolls through the
names of the faults, stopping at each for approximately three
seconds.
The system fault alert turns off when the cause of each fault
is corrected. The name of each fault that has occurred during
operation is retained in memory, however,
until two things
happen :
1. Name of fault appears on display at least once.
2. Cause of fault is corrected.
For this reason, it is normal for the names of faults to appear
when you scroll to the system fault group, even when the
system fault alert is off.
To erase the names of inactive faults, scroll to the system
fault group. Wait until the display scrolls through the name of
each fault. The names of inactive faults will be erased
automatically. If the alert is on, only the names of active faults
will remain.
NO FAULT appears on the display (see Figure 3-13 ) when
there are no faults.
Selecting Display Language
Software for the Model 999 contains English and several
foreign-language display readings. When a new computer
chip is installed, any one of the languages could appear on
the screen when the system is powered up the first time.
Once the desired language is selected, it will remain in
memory until another language is selected.
To select a different display language, perform both of the
following steps at the same time:
1. Depress limit bypass switch.
2. Turn digital display confirm/select key switch to “confirm”
position.
3. Repeat steps until the screen displays desired
language.
FIGURE 3-12
SYSTEM FAULT
ENGINE OIL PRESSURE
FIGURE 3-13
SYSTEM FAULT
NO FAULT