REFUSOL 20K-2T - Maintenance and repair; EMC;Noise Level; Symbols and signs

REFUsol 20K-2T (853P020.200)
User manual
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Maintenance and repair
Before any repair work, turn OFF the AC circuit breaker between
the inverter and electrical grid first, then turn OFF the DC switch.
After turning OFF the AC circuit breaker and DC switch wait for at
least 5 minutes before carrying any maintenance or repair work.
Danger
Inverter should not work again until removing all faults. If any
repair work is required, please contact local authorized service
center.
Should not open the inverter cover without authorized permit,
REFU ELEKTRONIK does not take any responsibility for that.
Attention
EMC/Noise Level
Electromagnetic compatibility (EMC) refers to that on electrical equipment
functions in a given electromagnetic environment without any trouble or error and
impose no unacceptable effect upon the environment. Therefore, EMC represents
the quality characters of an electrical equipment.
 The inherent noise-immune character: immunity to internal electrical noise
 External noise immunity: immunity to electromagnetic noise of external
system
 Noise emission level: influence of electromagnetic emission upon
environment
Electromagnetic radiation from inverter may be harmful to health!
Please do not continue to stay away from the inverter in less than
20cm when inverter is working
Danger
1.2. Symbols and signs
High voltage of inverter may be harmful to health!
Only certified engineer can operate the product.
Juveniles, Disable, should not use this product.
Keep this product out of the reach of children.
Danger
Caution of burn injuries due to hot enclosure!
Only touch the screen and pressing key of the inverter while it is
working
Caution