User manual

OPERATING INSTRUCTIONS
SOLAR BATTERY CHARGER UNIT 12 / 24 V 4 A CE
- for 12/24 V systems
- Dynamic protection against overdischarge
Dear Customer,
Thanks you for buying our product. You have bought one of the most powerful, compact and reliable units of
its class.
Please read the operating instructions carefully before use.
WARNING!!! Safety Instructions!!!
(Precautions: to maintain good performance.)
- Do not use the unit:
In places which are dusty, damp. In a high humidity area (over 80% rel. humidity), Temperatures above
50°C. In areas containing inflammable materials (liquids/solvents, gas). Do not immerse in water.
- Use only in closed, dry areas.
- Should the unit fail to operate, or show signs of not operating properly unplug immediately and make
sure that the unit is not put into further operation. Do not use the unit when visible signs of damage - due
to transport or inadequate storage are noticeable.
- To prevent the risk of explosion by overcharging, install the battery in a well ventilated place.
- Use only solar panels as power source.
- To prevent a short-circuit between Solar charger unit and battery, install a fuse on the positive
terminal/pole.
- Equipment which on account of its function may not be switched off by means of load rejection (e.g.
navigation lights) must be connected directly to the battery and fused.
FUNCTION-DESCRIPTION OF OPERATION
The use of lead-batteries is common for the storage of solar energy (photovoltaik solar systems). Lead-
batteries require protection against overcharging and overdischarging. This unit satisfies both requirements.
The 12/24 V changeover enables the solar battery charger unit to operate with the installed solar system.
12/24 V Changeover
The unit can be used with both 12 V and 24 V photovoltaik solar systems. The unit can be adapted to both
12 V and 24 V.
Protection against overdischarge
Lead-Batteries need to be protected against being discharged, otherwise damage can occur to the battery
cells. The solar battery charger unit protects lead-batteries from undercharging when the required battery
power output is not achieved by automatically switching-off. As soon as the batteries are recharged by the
solar cells, the load is automatically reconnected.
Protection against overcharge
The battery is not fully charged when the final charging voltage is reached. The charging current should not
be completely switched off, instead reduced, so that the final charging voltage is not exceeded. This is
accomplished by the solar charger unit.
Connection and Operating-elements
1. +/- Terminal/Pole lead-battery
2. +/- Terminal/Pole solar panel
3. +/- Terminal/Pole load
4. LED red: lead-battery is charged
5. LED green: lead-battery fully charged
6. 12/24V Switch/changeover