KACO Powador 3200 - 6600 - Manual (Page 42)

EN EN
Maintenance/Troubleshooting
Page 42 Operating Instructions for Powador 3200-6600_EN
9 Maintenance/Troubleshooting
9.1 Visual inspection
Inspect the inverter and the cables for visible damage and note the operating status display of the inverter. In case
of damage, notify your installer. Repairs may only be carried out by authorised electricians.
NOTE
The inverter should be checked for proper operation by a qualified electrician at regular intervals.
9.2 Cleaning the inverter externally
DANGER
Lethal voltages in the inverter
Serious injuries or death may occur if moisture gets into the inverter.
› Only use completely dry objects to clean the inverter.
› Only the exterior of the inverter should be cleaned.
Cleaning the inverter
" Do not use compressed air.
" Use a vacuum cleaner or a soft brush to remove dust from the bottom fan covers and from the top of the
inverter on a regular basis.
" Remove dust from the ventilation inlets if necessary.
9.3 Shutting down for maintenance and troubleshooting
DANGER
Lethal voltages are still present in the terminals and cables of the inverter even after the
inverter has been switched off and disconnected.
Severe injuries or death may occur if the cables and terminals in the inverter are touched.
Only appropriately qualified and authorised electricians may open and maintain the inverter.
› Observe all safety regulations and the current technical connection specifications from the relevant
power supply company.
› Disconnect the AC and DC sides.
› Secure the AC and DC sides from being inadvertently switched back on.
› Do not open the inverter until these two steps are complete.
› After shutdown, wait at least 30 minutes before working on the inverter.
CAUTION
Destruction of the DC connection
The connection terminals can be destroyed by arcing if disconnected while still live.
› It is absolutely essential that the shutdown sequence be carried out in the correct order.
Shutting down the inverter
1. Switch off the grid voltage by turning off the external circuit breakers.
2. Disconnect the PV generator using the DC isolator switch.
DANGER! The DC cables are still live.
" Ensure that there is no voltage present on the grid connection terminals.