Maintenance/Troubleshooting; Visual Inspection; External Cleaning; Shutting Down For Maintenance And Troubleshooting - Kaco Powador 7700 Operating Instructions Manual

Maintenance/Troubleshooting

9 Maintenance/Troubleshooting
9.1

Visual inspection

EN EN
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

External cleaning

Lethal voltages in the inverter
Serious injuries or death may occur if moisture gets into the inverter.
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Cleaning the inverter
" Do not use compressed air.
" Remove loose dust on the vents regularly using a vacuum cleaner or soft brush.
9.3

Shutting down for maintenance and troubleshooting

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.
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Destruction of the DC connection
The connection terminals can be destroyed by arcing if disconnected while still live.
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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.
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DANGER
Only use completely dry objects to clean the inverter.
Only the exterior of the inverter should be cleaned.
DANGER
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
It is absolutely essential that the shutdown sequence be carried out in the correct order.
Operating Instructions for Powador 7700-9600_EN