Harmony User Guide - The PSU
07
www.auto-sleepers.co.uk/harmony
The Sargent EC700 PSU is located in the front offside upper locker and similar locations
The EC700 system has a shut-down feature that can be used when the vehicle is in
storage. This allows the leisure electronics to be turned off when not required to save
battery power. When in the off state the alarm and tracking system supplies are still
active, all other supplies are turned off.
Before using the system please ensure the system shut-down switch is in the on position
(button in) the system is now active.
Note: if you plan to use the Auto-Sleepers LOCATE remote features the system needs to
be active.
Connecting to the Mains 230V supply and Safety checks
For your safety it is IMPORTANT that you follow these connection instructions each time
your Leisure Vehicle is connected to a mains supply. This section assumes that the system
is complete and that a Leisure battery has been installed (see page 18).
A. Ensure suitability of the Mains Supply. Your motorhome should only be connected to
an approved supply that meets the requirements of BS7671 or relevant harmonised
standards. In most cases the site warden will hold information regarding suitability
of supply. If using a generator you also need to comply with the requirements /
instructions supplied with the generator. Please note that some electronic generators
may not be compatible with your leisure system. Further generator operational
information is contained elsewhere in this manual.
B. Switch the PSU internal Power Converter OFF. Locate the green ‘Charger’ power switch
on the PSU and ensure the switch is in the off position (button out) before connection
to the mains supply.
C. Connect the Hook-up Lead. Firstly connect the supplied hook-up lead (orange cable
with blue connectors) to the Leisure Vehicle and then connect to the mains supply.
D. Check Residual Current Device operation. Locate the RCD within the PSU and ensure
the RCD is switched on (lever in up position). Press the ‘Test’ button and confirm that
the RCD turns off (lever in down position). Switch the RCD back to the on position (lever
in up position). If the test button failed to operate the RCD see page 17.
E. Check Miniature Circuit Breakers. Locate the MCB’s within the PSU (adjacent to the
RCD) and ensure they are all in the on (up) position. If any MCB’s fail to ‘latch’ in the on
position see page 17.
F. Turn the PSU ON. Locate the black ‘Shut-down’ button and ensure it is in the on position
(press button in). Locate the green ‘Charger’ switch on the PSU and turn to the on
position (press button in). The charger switch will illuminate when turned on.
G. Check correct Polarity. Locate the ‘Reverse polarity’ indicator on the PSU and ensure
that the indicator is NOT illuminated. If the indicator is illuminated see page 17.
H. Check operation of equipment. It is now safe to operate the 12V and 230V equipment.
The Power Supply Unit
Power Supply Unit - Component Layout
Activating The System
06
Harmony - The PSU
Isolation
Switch
12 Volt DC fuses
(under flap)
Residual
Current
Device (RCD)
Miniature Circuit
Breakers (MCB’s)
(under flap)
RCD
Test
Button
Charger
Switch
Heating
System
Switch
Reverse
Polarity
Indicator
