PREVOST LE MIRAGE XLII BUS SHELLS, Руководство по обслуживанию

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Section 06: ELECTRICAL
PA1564
14
The battery has four (4) major functions:
1. Providing a source of current for starting the
engine.
2. Stabilizing the voltage in the electrical
system.
3. Supplying current for a limited time, when
electrical demands of the equipment exceed
the power output of the alternator.
4. Providing a limited source of power for
connected accessories, when the engine is
not running.
The batteries are located in the engine
compartment R.H. side (Fig. 13).
FIGURE 12: ENGINE COMPARTMENT R.H. SIDE
18513
3.1 BATTERY DISCHARGE PROTECTION
To prevent discharge of the batteries when the
engine in not running, some functions are
automatically switched off if the batteries voltage
drops below 24.4 volts for more than 30
seconds. The "BAT" telltale light blinks while this
protection mode is active. Set the ignition key to
the OFF position and then turn the ignition key
to the ON position to reactivate the functions for
a period of 30 seconds before they switch off
again. If a prolonged use of the functions with
the engine not running is necessary, connect the
battery to a charger.
3.2 MAIN BATTERY RELAYS
Main battery relays (24V & 12V) are provided for
this vehicle. The relays are located in the rear
junction box (R1 & R3). The 24-volt battery relay
engages when ignition key is in the ON or ACC
position.
When the main battery relays are turned to the
OFF position, all electrical supply from the
batteries is cut off, with the exception of the
following items.
o
Battery equalizer check module;
o
ECM;
o
Transmission Control Module (TCM);
o
Preheater electronic timer;
o
Preheater and water recirculating pump;
o
Radio memory;
o
CECM;
o
Cluster memory.
3.3 BATTERY REMOVAL AND
INSTALLATION
The batteries are located in the engine
compartment R.H. side area (Fig. 13).
1. Remove the tree (3) plastic protective cover
retaining bolts. Remove the plastic
protective cover.
2. Remove the support retaining bolt.
DANGER
To prevent possible electric shocks or
sparking, trip circuit breakers CB1 & CB2 and
turn the ignition key switch in the "Off" position
before disconnecting cables from the
batteries.
3. Remove the support (if necessary, remove
battery cables). To remove battery cables,
unscrew terminal nuts and remove cables.
4. Remove battery cables from defective
batteries.
NOTE
When the battery cables have been removed
from the batteries, wrap the battery terminals
and cable ends with electric tape to prevent
accidental grounding. The ground cables
should always be disconnected first and
replaced last.
5. Remove defective batteries.
6. Installation is the reverse of removal.
NOTE
In replacing batteries, only batteries of the
same specification should be used. Refer to
“Specifications” at the end of this section for
further details.
CAUTION
Ensure that connections are not reversed
when reinstalling batteries, since damage to
electrical system components will result.