Cleaning The Interior; Checking The Seals - SMA MEDIUM VOLTAGE POWER STATION 500SC-JP System Manual

SMA Solar Technology AG
4. Check whether no visual defects are present on the walls, the roof and the support feet of the devices and station
container (e.g. discoloration, dirt, damage, scratches or cracks).
If visual defects are present, repair these immediately.
5. Check the welded joints on the devices for damage.
Contact the SMA Service Line if any welded joints are damaged.
6. Check whether the type label of the MV Power Station is present, complete and legible.

10.4.2 Cleaning the Interior

Danger to life due to electric shock or electric arc if live components are touched
If the MV Power Station and its devices are not correctly disconnected, dangerous voltages may be present in the
components which, if touched, will result in death or serious injury.
• Disconnect the MV Power Station (see Section 7.6, page 101).
• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to discharge
completely.
• Ensure that the MV Power Station and its devices are voltage-free.
Procedure:
1. Remove dirt and dust from the inverter interior and from all devices.
2. Check the interior for leaks.
If leaks are present, fix them.
3. Remove moisture.

10.4.3 Checking the Seals

Figure 40: Section drawing with top view of a door seal in the inverter (example)
Position Designation
A Seal
B Side panel
C Sealing area
D Hinge
System Manual
10 Maintenance
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