EC500 Power Supply Unit
Overview
The EC500 Power Supply Unit utilises a battery
charger that supplies 12 volt DC power to run the
leisure equipment and supply the leisure battery. It
also houses the 12 volt DC fuses that protect the
various 12 volt circuits, and the 230 volt RCD and
MCB’s that protect the various mains circuits.
Residual Current Device & Miniture
Circuit Breakers
The Residual Current Device is provided to protect
the user from a potentially lethal electric shock.
The RCD will turn off (trip) if a fault occurs on the
system. To ensure the RCD is working correctly,
the test button should be operated each time the
vehicle is connected to the mains supply.
The Miniature circuit breakers (MCB’s) operate
in a similar way to traditional fuses and are
provided to protect the wiring from an overload or
short circuit. If an overload occurs the MCB will
switch off the supply. If this occurs the cause of the
fault should be investigated before switching the
MCB back on. Details of the MCB ratings and the
circuits they protect are detailed in the back of
this handbook.
12 Volt DC Fuses
These fuses are provided to protect the various
12 volt circuits from an overload or short circuit.
If a fuse does blow, the cause of the fault should be
investigated before a replacement is fitted. When
replacing a fuse, always replace a fuse with the
correct value. Never replace with a higher value as
this could damage the wiring harness. Details of
fuse ratings are in the back of this handbook.
Shutdown Button
The shutdown button is used to turn off the system
electronics when they are not required to save
battery power. The unit should be turned ‘off’
(button out) when the vehicle is being put into
storage or not being used for long periods of time.
Before using the system please ensure that the
system shutdown button is in the ‘on’
position (button in).
Power Button
The Power button turns on the leisure power. Press
the button once to turn on the 12 volt power – the
LED will illuminate, press the button again to turn
off the 12 volt power - the LED will go out.
The power button must be in the ‘on’ position for
any of the 12 volt systems to operate.
EC500 PSU (Power Supply Unit)
T A K E Y O U R S O N A N A D V E N T U R E
20
4188 AT Excel handbook 2011:Layout 1 23/11/10 14:26 Page 20