Checking The Connections; Checking And Maintaining The Battery - SMA SUNNY ISLAND 3.0M Operating Manual

11 Cleaning and Maintenance
11.5

Checking the Connections

Danger to life from electric shock due to high voltages
High voltages are present inside the Sunny Island. When the enclosure lid is removed, live components can be
touched that can result in death or serious injury due to electric shock.
• Disconnect the Sunny Island from voltage sources (see Section 9, page 45).
1. Make sure the Sunny Island is dead. (see Section 9, page 45).
2. Ensure that the cables on the DC+ and DC‒ connections are securely fastened (torque: 12 Nm).
3. Ensure that the connections are free of corrosion.
4. Ensure that the cables in the AC1 and AC2 connections are securely fastened.
5. Close the Sunny Island (see the Sunny Island inverter installation manual).
6. Switch on all load-break switches and circuit breakers.
11.6

Checking and Maintaining the Battery

Chemical burns and poisoning due to battery electrolyte
If handled inappropriately, battery electrolyte can cause irritation to the eyes, respiratory system and skin, and it can
be toxic. This may result in blindness or serious chemical burns.
• Protect the battery enclosure against destruction.
• Do not open or deform the battery.
• Do not throw batteries into fire. Batteries may explode in fire.
• Whenever working on the battery, wear suitable personal protective equipment such as rubber gloves, an
apron, rubber boots and goggles.
• Rinse acid splashes thoroughly for a long time with clear water, and consult a doctor.
• Install, operate, maintain and dispose of the battery according to the manufacturer's specifications.
Risk of injury due to short-circuit currents
Short-circuit currents in the battery can cause heat build-up and electric arcs. Burns or eye injuries due to flashes may
result.
• Remove watches, rings and other metal objects.
• Use insulated tools.
• Do not place tools or metal parts on the battery.
Requirement:
☐ The Sunny Remote Control is in user mode.
Procedure:
1. Check whether the current state of the battery corresponds to the expected state:
• Select the Battery display page on the Sunny Remote Control.
• Select the parameter Cycle and compare the value with the expected nominal energy throughputs.
94 SI30M-44M-60H-80H-BE-en-33
SMA Solar Technology AG
Operating Manual