SMA SC 500HE-20 Maintenance Manua - Manual (Page 12)

3 Maintenance Intervals SMA Solar Technology AG
12 SC500-800HE20-WH-en-10 Maintenance Manual
3 Maintenance Intervals
Observing maintenance intervals ensures trouble-free operation of the Sunny Central. Maintenance
intervals depend on ambient and operating conditions. Under especially harsh ambient conditions,
certain maintenance tasks must be performed more frequently. These maintenance tasks are listed in
the maintenance report. SMA Solar Technology AG recommends an optical inspection every month
to determine maintenance needs. Under normal ambient and operating conditions, the Sunny Central
must be fully serviced at the following intervals:
Maintenance under normal ambient and operating conditions:
Preventative replacement intervals:
Spare parts
Spare parts can be identified by their reference designation (ref. des.) and the circuit diagram. The
spare parts list includes the item number of each spare part. For information on a specific item number,
please contact the SMA Service Line.
Description Interval
Routine maintenance Every 24 months
Description Interval
Replacing the 24 V power supply units*
* Contact the SMA Service Line.
Every 10 years
Replacing the fans of the inverter bridge* Every 13 years
Ventilation grid mats Every 24 months
GFDI/soft grounding relay 100 trippings due to short circuit
Surge arrester If tripped
Maintenance intervals
Plant size, location and ambient conditions influence the maintenance intervals.
• If the inverter is subject to adverse ambient conditions, SMA Solar Technology AG
recommends shortening the maintenance intervals.