Cleaning And Maintaining The Battery Modules; Documenting The System Status; Cleaning The Fans Of The Inverter - SMA COMMERCIAL STORAGE SOLUTION 30 System Manual

13 Cleaning and Maintenance

13.10 Cleaning and Maintaining the Battery Modules

1. Disconnect the battery and inverter from voltage sources (see Section 11, page 119).
2. Check the battery modules for any damage such as scratches, dents, or corrosion damage.
3. Ensure that the connectors of all DC cables and all communication cables on the battery modules are tight.
4. Remove all dirt (e.g., foreign objects) between the battery modules.
5. Clean the battery modules with a dry cloth.
6. Clean the battery module fan with a soft brush, a paint brush, or a dry cloth.
7. Document all inspection results.
Also see:
• Safety Information for Cleaning and Maintenance ⇒ page 126

13.11 Documenting the System Status

Documenting the system status helps Service and may be requested if an error diagnosis is required.
Requirements:
• A mobile end device (e.g., laptop) must be available.
• The BatMon battery monitoring software must be open and you must be logged in.
Procedure:
1. Read the current measured values on the energy meters.
2. Document the charging capacity (Charge) and discharging capacity (Discharge).
3. Using the BatMon battery monitoring software, read the current values of the parameters A_EOL_COUNT /
A_Contactor_Count / A_Contactor_Count_OC and document them.
4. Using the BatMon battery monitoring software, read the status of the battery modules at module level.
5. Document the status of the battery modules at module level with screenshots.
6. Using the BatMon battery monitoring software, document the current state of charge, state of health, cell voltage,
and temperature.
7. If the current state of charge, state of health, cell voltage, or temperature are not as expected, decommission the
system and contact Service.
8. Using the BatMon battery monitoring software, save the event messages displayed by the battery.

13.12 Cleaning the fans of the inverter

If the performance of the fans is decreasing, it can be restored by cleaning the fans. Indications of a reduction in fan
performance are e.g. unusual fan noise or unusual derating behavior.
Procedure:
1. Disconnect the inverter from all voltage sources (see Section 11.1, page 119).
130 ESSX-20-SH-en-10
SMA Solar Technology AG
System Manual