12-Volt Dc (Direct Current) System; Batteries, Chassis And Auxiliary - Jayco Mini-Motorhome Owner's Manual

12-Volt DC (Direct Current) System

NOTE: Mini-motorhome master battery switch MUST be on before any 12 volt device
will operate.
Included in your load center is a converter which transforms 120-volt AC energy into
12-volt DC energy to supply your motorhome. When 120-volt AC power is supplied to
the power center through the main circuit breaker in "ON" position, the converter will
produce 12-volt DC power to motorhome as long as the auxiliary battery is properly
connected.
Electric components are sensitive to heat and a converter will produce heat. Ventilation is
required for proper operation. Also, a fan is built into the converter to assist air
movement and temperature control. If normal ventilation is obstructed and the fan is not
able to control the temperature, a protective "Thermal Breaker" will trip the 120-volt AC
power to the converter. After the compartment cools down, the breaker will reset
automatically and 12-volt power will be restored through the converter.
Replaceable fuses are used to protect the 12-volt components. Blowing fuses continu-
ously indicates the overloading of a circuit or a "shorted circuit." Should fuses continue
to blow, contact your RV dealer for assistance.
A separate 12-volt fuse panel supplies power to your chassis. See chassis manual for
assistance.
When 120 volt power is supplied to the converter through direct connection at the
campsite, the converter will supply 12 volt DC power to the auxiliary battery automatically.
The auxiliary battery will also receive a charge from alternator when traveling.

Batteries, Chassis and Auxiliary

Each motorhome chassis is built with a battery to provide energy to start the engine and
supply energy for other components in the chassis. This battery is located under the hood.
Ford Motor Co. uses a "Motorcraft" battery, serviced and warranted by Ford.
An auxiliary battery is included in each motorhome for storage power when 120-volt
energy is not available. When drawing energy from storage battery, remember there is
limited power available until the battery needs to be recharged. This auxiliary battery is
located in the "house portion" of your motorhome.
All auxiliary batteries require an "in-line" fuse or a 12-volt breaker placed within 18" of
battery for your protection.
Maintenance is a normal requirement on all batteries for maximum performance.
1. Keep all terminals clean and tight.
2. Keep the battery filled with water as cells without water cannot hold a charge of
energy. A battery used in daily operation will consume water.
3. The charging system must be in good operating condition to maintain your battery.
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