10. Maintenance
10.3
Battery Maintenance
CAUTION
All work or service on the ESS and electrical connections must be supervised
by personnel knowledgeable about batteries and the required precautions.
When replacing battery trays, replace old ones with the same type and
number of batteries or battery packs (Check the type label or serial
numbers/model numbers on battery trays).
40-minute standby period of time to complete discharging in the system
before testing electrical parts inside the system!
Do not dispose of batteries in a fire. The batteries may explode.
Do not open or damage batteries. Released electrolyte is harmful to the skin
and eyes. It may be toxic.
A battery can present a risk of electrical shock and high short-circuit current.
The following precautions should be observed when handling batteries.
Remove watches, rings, or other metallic objects.
Use tools with insulated handles.
Wear rubber gloves, eye protection glasses and boots when working with the
battery systems.
Do not lay tools or metal parts on top of batteries.
Disconnect charging source prior to connecting or disconnecting battery
terminals.
Determine if the battery is inadvertently grounded. If that is the case,
separate battery from ground Contact with any part of a grounded battery
can result in electrical shock. The likelihood of such shock can be reduced if
such grounds are removed during installation and maintenance (applicable
to equipment and remote battery supplies not having a grounded supply
circuit).
10.3.1
Checking Battery Problem
When you check the event message (as noted in Chapter 9), check whether it is a significant
event that informs the battery system (Chapter 9.2: significant event E901~E910).
If it is a significant event, contact the installer or the maintenance personnel.
If it is a significant event message related to the failure, exchange the battery. However,
battery exchange is permitted only to the qualified personnel.
The battery exchange procedure is as described in Chapter 10.3.2.
10.3.2
Battery Exchange Procedure
Separate the e electrical / communication connection line as guided below before the
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Australia (Eng.) 05/2015. Rev1.1
