Auto-Sleepers Topaz, Handbook

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7-16
CONNECTION OF SERVICES
3.4 Battery
A) 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. This battery should always be connected when the system is in use.
The EC155PSU is designed to charge standard lead acid leisure batteries, however it may be
used with Gel batteries depending on their composition. Please consult the battery
documentation for further advice.
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 per battery.
B) Installation & Removal
Always disconnect the 230v mains supply and turn the EC155PSU charger switch to the OFF (0)
position before removing or installing the battery.
When connecting the battery, ensure that the correct polarity is observed (black is negative [-]
and red is positive [+]) and that the terminals are securely fastened. Crocodile clips must not be
used.
WARNING: Explosive gases may be present at the battery. Take care to prevent flames
and sparks in the vicinity of the battery and do not smoke.
C) Operation / Servicing
Under normal circumstances it should not be necessary to remove the battery other than for
routine inspection of the terminals and “topping up” of the battery fluid where applicable. Please
see instructions supplied with the battery.
Note: Do not over discharge the battery. One of the most common causes of battery failure is
when the battery is discharged below the recommended level of approximately 10v. Discharging
a battery below this figure can cause permanent damage to one or more of the cells within the
battery.
To prevent over discharge, the EC155PSU in conjunction with the EC50 series control panel
incorporates a battery protect circuit that warns and then disconnects the batteries when they fall
below the following conditions:
Battery Voltage Action after cut off Notes
cut off
Battery selection is This cut off level is designed to protect the vehicle
changed from Vehicle battery from over discharge. The 10.9V level
battery to leisure ensures there is sufficient power in the battery to
Vehicle 10.9V battery. If the leisure run the vehicle electronics and start the vehicle.
battery is below 9V This cut off only applies to power drawn from the
then a further warning battery by the leisure equipment; it will not protect
will occur (see below). the battery if you leave the vehicle lights on.
This is an emergency cut off level to protect the
battery from severe damage. You should not rely
on this cut off level during normal operation, but
manage your power consumption to a discharge
level of 10V.
Leisure 9V Power is turned off This cut off only applies to power drawn from the
battery by the leisure equipment that is controlled
by the control panel power switch; it will not protect
the battery from discharge by the radio or other
permanently connected equipment.