9 Cleaning and Maintenance
SMA Solar Technology AG
50
SI80H-BE-BEN120810
Operating Manual
9.6 Checking and Maintaining the Battery
1. Stop the off-grid system and switch off the off-grid inverter (see Section 5).
2. Open the switch-disconnector of the BatFuse and secure against reconnection.
3. Check and maintain the battery (see the instructions of the battery manufacturer).
4. Quickly connect the switch-disconnector of the BatFuse and close the BatFuse
(see the installation manual of the BatFuse).
5. Start the off-grid system.
9.7 Cleaning the Fans
If the Sunny Remote Control shows warning
W137
,
W138
or
W139
, one of the fans is probably
defective or blocked. Always use the following procedure to check and clean each fan on the affected
off-grid inverter.
1. Disconnect the off-grid inverter from voltage sources (see Section 8).
2. Wait for the fans to stop rotating.
Risk of injury by corrosive and/or toxic electrolyte from the battery
If handled inappropriately, electrolyte from the battery can burn the skin or eyes or be toxic.
• Protect the battery enclosure against destruction.
• Do not open or deform the battery.
• Whenever working on the battery, wear rubber gloves, rubber boots and goggles.
• Rinse acid splashes with clear water and consult a doctor.
Risk of burns from short-circuit currents
Short-circuit currents in the battery can cause heat build-up and electric arcs.
• Remove watches, rings and other metal objects.
• Use insulated tools to mount and install the battery.
• Do not place tools or metal parts on the battery.
Battery Checks and Maintenance
Only skilled persons are suitably qualified to check and maintain the batteries.
• If you are not a skilled person, have a skilled person perform the work.
