SMA SC 500CP-10-JP Maintenance Manual - Manual (Page 33)

SMA Solar Technology AG 7 Maintenance of Accessories
Maintenance Manual SCCP-JP-WA-A4-en-12 33
7 Maintenance of Accessories
7.1 Maintenance of Sunny String-Monitor SSM
7.1.1 Maintenance Interval
• Service the Sunny String-Monitor every 24 months.
7.1.2 Disconnecting the Sunny String-Monitor
Procedure:
1. If there is a DC circuit breaker on the Sunny String-Monitor, disconnect it. This ensures that there is no current flowing
through the Sunny String-Monitor.
2. If there is no DC circuit breaker, disconnect the Sunny Central (see the installation manual for the Sunny Central).
3. If there are fuses in the Sunny Central, remove them.
4. If there are no fuses in the Sunny Central, remove the fuses in the DC main distributor.
5. Only open the isolation terminals in no-load condition.
'$1*(5
Danger to life due to electric shock when live components of the Sunny String-Monitor are touched.
• Observe the safety rules:
– Disconnect the device from voltage sources.
– Ensure that the device cannot be reconnected.
– Make sure that no voltage or current is present on the components.
– Cover or isolate any adjacent live components.
• Only carry out maintenance work if the device is voltage-free.
• Open the isolation terminals only when the device is voltage-free.
• Plug in or remove the DC connector only when the device is voltage-free.
6. '$1*(5
Danger to life from electric arcs when removing the DC connectors
• Remove any DC connectors only when the Sunny String-Monitor is switched off.