SMA SC 500CP-US Maintenance Manual - Manual (Page 20)

4 Information on Maintenance SMA America, LLC
20 SCCP-US-WH-US_en-30 Maintenance Manual
4 Information on Maintenance
4.1 Maintenance Intervals
Maintenance under normal ambient conditions:
Preventive replacement intervals:
4.2 Spare Parts
Spare parts can be identified via their reference designation and the circuit diagram. The spare-parts list includes the
article number of each spare part. For information on a specific article number, contact the SMA Service Line.
Shorter maintenance intervals in the event of adverse ambient conditions
The plant location and ambient conditions influence the maintenance intervals.
• If the inverter is installed in adverse ambient conditions, SMA recommends a monthly inspection in order to
determine the need for maintenance. The maintenance intervals are to be shortened depending on the
determined maintenance requirements. In particular, cleaning work and corrosion protection may be necessary
more frequently.
• Adherence to the maintenance intervals ensures trouble-free operation of the inverter (see the maintenance
report of the inverter).
Description Interval
Maintenance Every 24 months
AC circuit breaker
• Functional test*
• Cleaning*
• Checking the contact elements*
* See the manufacturer's maintenance manual of the AC circuit breaker
Every 24 months
Description Interval
24 V Power Supply Units*
* Contact the SMA Service Line.
Every 10 years
Inverter Bridge Fan* Every 13 years
Interior Fan* Every 13 years
Integrated DC Switch motor actuated DC load-break
switches*
Every 15 years or 10,000 switching cycles,
whichever is sooner**
Integrated AC Disconnect GFDI / ABB High-Performance
Circuit Breaker*
After 100 trippings due to short circuit or after
7,000 switching cycles**
** The trippings and switching cycles are recorded as instantaneous values (see Section 5.1 "Reading the Replacement Interval Meter",
page 21).
Remote Switch Unit of the GFDI* After 7,000 switching cycles**
GFDI auxiliary signal contact* Every 6 years
Surge arrester If tripped
Key switch In case of severe signs of wear
Label on the enclosure If illegible, defective or not available