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ELECTRICAL
This article provides basic operation instructions for a
house battery disconnect switch.
The House Battery Disconnect Switch
(labeled “Batt. Disc.”) is used to control
the disconnect relay connected to the
battery bank and is typically located in
the passenger side console. This switch
disconnects most loads when placing the
coach in storage or when the coach is not
in use. This is done to prevent the coach
batteries from being drained during storage.
Not all loads are disconnected, and, depending on the
coach and its options, some systems may have memory
circuits purposely not wired to the disconnect solenoid,
including, but not limited to, the LP detector (if equipped),
driver memory controls, and other memory-based
features.
This article provides information about a Spartan chassis
battery bank.
The chassis battery bank supplies power to everything
a customer requires to drive the unit. Currently, Spartan
chassis are equipped with serviceable batteries.
The type and brand of chassis battery may vary
depending on coach year, make, and model. Chassis
batteries may need to be disconnected and removed
from the coach to maintain proper electrolyte levels or
perform routine battery maintenance.
The chassis batteries on your motorhome are installed
and warranted by the chassis manufacturer.
The chassis batteries are recharged by the vehicle’s
electrical system whenever the engine is running. With
an added charge bridge solenoid or BIM, the vehicle’s
charging system will also charge house batteries if
parameters are met.
Spartan Chassis Battery Overview
In addition, the inverter is typically not on the disconnect
and will need to be powered off separately. This allows
the inverter to charge the batteries when plugged into
shore power with the battery disconnect turned off.
Some switches have a shield on the sides to help prevent
accidental battery shutdown when trying to the operate
the baggage door lock switch.
To operate the battery disconnect:
1. Press up on the rocker switch to turn on the
disconnect and reconnect the batteries. This will
make the 12 volt system ready for use. When the
battery disconnect is turned on, the indicator light will
illuminate.
2. Press down on the rocker switch to turn off the
battery disconnect and disconnect the batteries.
When the battery disconnect is turned off, the
indicator light will also turn off.
House Battery Disconnect Overview for Diesel Pushers
The inverter/charger will automatically charge the
coach batteries when the unit is connected to a 120 volt
outside power source and the batteries are connected
via the charge bridge or BIM. The chassis batteries are
isolated from the coach batteries. This prevents the
chassis batteries from being drained by the interior
12 volt equipment, allowing ample voltage for engine
ignition.
This article provides basic operation instructions for a
Spartan Chassis Battery Disconnect. This article contains
written instructions, as well as a video demonstration, for
this procedure.
The Chassis Disconnect Switches are located in the rear
passenger side compartment. There are two switches
on a Spartan chassis, and when turned off, they will
disconnect most of the chassis battery loads.
When the switches are turned off, the ignition key and
most dash components will not operate. To turn the
disconnects off, turn both switches to the off position.
When placing the coach in storage or when working on
the coach engine, turn off the disconnects to disable
starting of the engine. To turn on the disconnect
switches, flip them to the ON position.
Spartan Chassis Battery Disconnect Overview
Summary of Contents for LONDONAIRE 2022
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