3. Power Supply Unit - System Operation
3.1 Introduction
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.
Warning: Under heavy loads the PSU case will become
hot. ALWAYS ensure the ventilation slots have a clear flow
of air. Do not place combustible materials against /
adjacent to the PSU.
3.2 Mains Connection
For your safety it is IMPORTANT that you follow these
connections instructions each time your Leisure Vehicle is
connected to a mains supply.
• Ensure suitability of the Mains Supply.
Your Leisure Vehicle should only be connected to an
approved supply that meets the requirements of BS7671.
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.
• Switch the PSU internal Charger unit OFF.
Locate the red ‘Charger’ power switch on the PSU and
ensure the switch is in the OFF (0) position before
connection to the mains supply.
• 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.
• 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 is turned 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 section 3.4.
• Check correct Polarity.
Locate the ‘Reverse Polarity’ indicator on the PSU2007 and
ensure that the indicator is NOT illuminated. If the indicator is
illuminated see section 3.4.
• 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 section 3.4.
• Turn the PSU ON.
Locate the red power switch on the PSU and turn to the ON
(I) position. The switch will illuminate when turned on.
• Check operation of equipment.
It is now safe to check the operation of the 12v and 240v
equipment.
3.3 Battery Type / Selection
For optimum performance and safety it is essential that only
a proprietary brand LEISURE battery is used with a typical
capacity of 75 to 120 Ah (Ampere / hours). A normal car
battery is NOT suitable. It is recommended that the leisure
battery is always ‘in circuit’ when the system is in use.The
battery feed is fitted with an inline fuse between the battery
and the electrical harness, and is usually located immediately
outside the battery compartment or within 500mm of the
battery. The maximum rating of this fuse is 20A.
30
9. Electricity: Services
The following diagram shows
the PSU2007 layout
(the PSU2005 is the same layout).
Final 2006 AT Handbook 1/12/05 12:06 pm Page 30
