Sargent EC440 System Instructions

EC400 / EC450 series Power Control System
1 Introduction
This section of the handbook will guide you through the operation of the electrical system.
Further technical details are contained in section 3 or in the supporting dealer technical manual
available from www.sargentltd.co.uk
For the safe operation of all electrical equipment within your Leisure Vehicle it is important that you
read and fully understand these instructions. If you are unsure of any point please contact your dealer
/ distributor for advice before use.
The system has a number of key components that you will need to be familiar with before attempting to
use the system, these are:
·
The EC400 / EC450 series Power Supply Unit (PSU) - a combined mains consumer unit
and 12V controller located in the front locker or bed box area. On locker mounted caravan
versions this unit also contains the provision for the Radio/CD head unit. The EC400 /
EC450 series of power supply units include the EC400 range (horizontal units) and the
EC450 range (vertical units), further details are contained later in this document.
·
The EC400 / EC450 series Control Panel (CP) - a remotely located user control panel used
to turn circuits on and off and to display battery and water tank information. This panel uses
simple straightforward controls and reliable data communication to the PSU.
·
Road Light Fuse Box - This small unit, which is unique to caravans, is located in the front
bed box. The unit houses fuses for the road lighting circuits and supplies from the tow
vehicle, and also has connectors for the optional alarm system and Automatic Trailer Control
(ATC) unit.

2 Using the System

The PSU is located in the front offside locker area or front bed box in caravans, and in similar locations
in motorhomes.
2.1 Power Supply Unit - Models
A number of different PSU versions are used within the system and are shown above. The operation
of each model is very similar and is detailed below.
Issue 1 Page 1 of 13
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12 June 2011