General safety references
When working on the electrical system and the frequency inverter:
DANGER
Life-threatening voltages inside the FI housing!
Contact can lead to serious injuries or death.
Never open the FI housing in operation!
Switch off the main switch and secure it against being switched on again.
Wait for at least 5 minutes until all capacitors have been discharged!
Before switching on again, close the FI housing.
CAUTION
Surface temperatures of more than 60°C or below 0°C.
Risk of burns or frostbite.
Close off accessible areas and mark them.
Before performing any work on the compressor: switch it off and let it cool down or warm up.
When working on the refrigeration system:
WARNING
The compressor is under pressure!
Serious injuries are possible.
Depressurize the compressor!
Wear safety goggles!