Performing A Manual Equalization Charge In The Off-Grid System; Checking And Maintaining The Battery - SMA SUNNY ISLAND 4.4M Operating Manual

14 Cleaning and Maintenance
5.
Damage to the fan due to compressed air
• Clean the fan with a soft brush, a paint brush, or a damp cloth.
6. Insert the plug of the fan in the pin connector until it snaps into place.
7. Insert the fan into the Sunny Island until the fan audibly snaps into place.
8. Press the fan guard into the bracket until it audibly snaps into place.
14.5

Performing a Manual Equalization Charge in the Off-Grid System

After extended periods without charging (e.g., systems operated seasonally), perform a manual equalization charge at
the end or start of the season.
The basic procedure for changing operating parameters is explained in another section (see Section 9.2 "Changing
Operating Parameters", page 119).
Procedure:
1. Select Battery > Battery > Operation.
2. Set the parameter Manual equalization charge to Start.
14.6

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 burns due to flashes
Short-circuit currents in the battery can cause heat build-up and flashes.
• Remove watches, rings and other metal objects prior to carrying out any work on the battery.
• Use insulated tools for all work on the battery.
• Do not place tools or metal parts on the battery.
Check and log the status of the battery before performing maintenance work.
Transition resistances can impair the performance of the batteries.
• Ensure that the torques at the battery connections are correct each time that maintenance is performed.
136 SI44M-80H-12-BE-en-10
SMA Solar Technology AG
Operating Manual