Swift Motorhome Owners Service Manual page 71

EC 4 0 0 SERI ES P OWER S U PP LY S YS T E M
• Charging when the vehicle engine is
running. When the vehicle engine is running
both the vehicle battery and the leisure
battery LED's will flash in unison to indicate
that they are connected together and are
being charged by the vehicle.
• Cabin Lights Button. For motorhomes,
with the power on, press the cabin lights
button to turn the main lighting supply on
or off.
• Awning Light Button. For motorhomes,
with the power on, press the awning light
button to turn the awning light on or off.
• Frost Protect Button. For motorhomes if
/ when fitted, with the power on, press the
frost protect button to turn on the water
tank heating system. The adjacent LED
will illuminate to show that the tank heating
system is on.
2.7 Operation while driving
The EC400 system is designed to shutdown
parts of the system while the engine is running.
This is to meet Electro Magnetic Compatibility
(EMC) regulations and to ensure the safe
operation of the caravan or motorhome. This
is indicated by the two battery LED's flashing
together.
Please ensure the system shutdown switch
on the PSU is in the "on" (button in) position
before driving (see 2.3). This will ensure the
electronic system is active and will therefore be
able to control the charging process, supply
the refrigerator and monitor other system
circuits.
On motorhomes if / when fitted, designated
12v sockets, en-route reading lights and en-
route heating will remain operational while the
engine is running.
3. System Technical Information
The following section provides further technical
information relating to the electrical system.
You can also access the supporting technical
manual from www.sargentltd.co.uk
70
3.1 Residual Current Device & Miniature
Circuit Breakers
Residual Current
Device (RCD)
RCD
Te st
button
The Residual Current Device (RCD) is basically
provided to protect the user from lethal electric
shock. The RCD will turn off (trip) if the current
flowing in the live conductor does not fully
return down the neutral conductor, i.e. some
current is passing through a person down to
earth or through a faulty appliance.
To ensure the RCD is working correctly, the
test button should be operated each time the
vehicle is connected to the mains supply (see
section 2.4)
The Miniature Circuit Breakers (MCB's) operate
in a similar way to traditional fuses and are
provided to protect the wiring installation from
overload or short circuit. If an overload occurs
the MCB will switch off the supply. If this
occurs you should investigate the cause of the
fault before switching the MCB back on.
Miniature Circuit
Breakers (MCB's)