9. MaINTENaNCE aND CLEaNING
The product does not require any maintenance. You should never take it apart.
The product should only be repaired by a specialist or specialist workshop or it may be dam-
aged. Furthermore, the CE approval and the guarantee/warranty will expire.
The installed device fuse must only be exchanged by a specialist.
Before cleaning, switch off the product and disconnect it from the voltage/current supply.
Disconnect the connected consumers as well.
Only clean the product with a soft, clean, dry and lint-free cloth. Never use any cleaning
agents, since this might damage the surface of the casing and label.
Dust can be removed using a clean, soft brush and a vacuum cleaner.
10. TROUBLESHOOTING
Inverter cannot be switched on, "Power" LED is not lit.
• The rechargeable battery used for operation is flat. Connect the inverter to another, fully
charged rechargeable battery.
• The polarity was swapped at connection. Check the wiring.
• The cable connections with the rechargeable battery are not correct; e.g. the connection
cable is not screwed on. Tighten the screws of the terminal clamps.
The inverter works only with a consumer with a lower power consumption.
• The connection cable to the rechargeable battery is too long or the line cross-section is too
small. Replace the connection cable by a shorter one; use a cable with a larger line cross-
section.
• The connected consumers' power consumption is too high for the inverter.
• The connected consumers' power consumption at activation is too high.
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