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About this manual
These operating instructions come with the product and should be kept for the life of the product for proper
installation and usage.
Read these operating instructions carefully before use,
Keep them for the entire life of the product,
And pass then on to any future owner or user of this product.
This manual describes the installation, function, operation and maintenance of the solar system controller
MP-3735. These operating instructions are intended for end customers. A technical expert must be consulted in
cases of uncertainty.
Safety
1. The solar controller may only be used in PV systems for charging and controlling Lead-Acid batteries.
2. No energy source other than solar photovoltaic modules may be connected to the solar charge controller.
3. Use only with 12V or 24V nominal voltage solar PV array
4. Do not connect any defective or damaged measuring equipment.
5. Follow general, safety and accident prevention regulation.
6. Never alter or remove the factory plates and identification labels.
7. Keep children away from PV systems.
8. Never open the device.
9. Only one solar array can connect with one controller only.
10. Never touch bare cables ends.
Other risks
Danger of fire and explosion
Do not use the solar charge controller in dusty environments, in the vicinity of solvents or where
inflammable gases and vapour can occur.
No open fires, flames or sparks in the vicinity of the batteries.
Ensure that the room is adequately ventilated.
Check the charging process regularly.
Follow the charging instructions of the battery manufacturer.
Battery acid
Acid splashes on skin or clothing should be immediately treated with soap suds and rinsed with
plenty of water.
If acid splashes into the eyes, immediately rinse with plenty of water. Seek medical advice.
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