6 Maintenance
SMA Solar Technology AG
Maintenance Manual
45
SCCPXT-E7-WA-en-37
6.3.2
Demand-Based Annual Repairs
Task
Interval
Replace key switch
In case of severe signs of wear
Replace surge arrester
If tripped
Replace labels on the enclosure
If illegible, defective or missing
Replace GFDI / ABB circuit breaker
After 100 trippings due to short circuit
or
after number of switching cycles: 7000
• Contact Service.
Replace Remote Switch Unit of the GFDI
Number of switching cycles: 7000
• Contact Service.
6.3.3
Repairs every 10 Years
Task
Comment
Replace 24 V power supply units
• Contact the Service (see Section 9, page 68).
Replace 24 V buffer modules
• Contact the Service (see Section 9, page 68).
Replace the fans of the AC disconnection unit
• Contact the Service (see Section 9, page 68).
Replace exterior key switch, front element and label
• Contact the Service (see Section 9, page 68).
6.3.4
Repairs every 12 Years
Replacement intervals for order option "Q at Night"
The replacement intervals are halved for order option "Q at Night".
Task
Comment
Replace interior fan in the inverter cabinet
• Contact Service.
Replace the inverter bridge fan
• Contact Service.
6.4
Maintenance Work
6.4.1
Maintenance work with supply voltage present
6.4.1.1
Checking the Fans
DANGER
Danger to life due to electric shock or electric arc if live components are touched
• Switch off the inverter and wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Disconnect the inverter (see Section 4, page 26).
Summary of Contents for SUNNY CENTRAL 1000CP XT
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