SMA SUNNY ISLAND 4.4M Operating Manual page 144

14 Cleaning and Maintenance
☐ All Sunny Island inverters must be connected correctly (see Section 6.7, page 68).
☐ All Sunny Island inverters must be closed (see Section 6.8, page 72).
☐ All Sunny Island inverters must be switched off.
☐ The fuse switch-disconnector of the battery fuse must be closed (see Section 6.9, page 73).
Procedure:
1. Switching on the Sunny Island:
• For systems with one Sunny Island, press the "On" button.
• For systems with three Sunny Island inverters, press and hold the "On" button on the master until an acoustic
signal sounds.
• For multicluster systems, press and hold the "On" button on each master until an acoustic signal sounds.
2. Establish a connection to the user interface of the inverter (see Section 8.1, page 110).
144 SI44M-80H-12-BE-en-10
SMA Solar Technology AG
Operating Manual