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Safety
3
Safety
This manual uses the labels listed below to indicate specific type of risks that you
will encounter during certain procedures:
Danger:
Danger means that an accident may occur if the safety precautions are not
followed. This type of accident is likely to be fatal to human beings.
Warning:
Warning means that an accident may occur if the safety precautions are not
followed. This type of accident may be fatal or cause severe injuries to human
beings or may create essential damage to the product.
Caution:
an accident could occur if safety instructions are not followed. This type of
accident may cause injury to people or may create damage to the product.
ESD-sensitive component. Follow procedures for ESD protection. See section
ESD protection
3.1
High voltage
Danger:
Contact with live components of equipment powered by high-voltage current can
be life-threatening. Also, bear in mind that moist components may conduct
electricity although they possess insulating properties when dry.
Some parts inside the pedestal and in the heating system inside the cabinet are
live with hazardous voltage even when the terminal is switched OFF.
Before working on components that conduct high-voltage electricity:
Turn OFF the power supply. Unscrew or switch OFF the fuse if there is one.
Make sure that the equipment is not exposed to moisture while you are working.
Follow all applicable local worker safety regulations.
3.2
Batteries
3.2.1
Back-Up battery holder on CPU board
The CPU board contains a lithium battery (button cell CR2032, 3 V, 210 mAh, 20
mm diameter) to keep the terminal's memory alive on power down.
Caution:
It is very important that the battery is of an approved brand (Duracell, Eveready,
Panasonic, Ray-O-Vac, Sanyo, Varta, Toshiba, Seiko, or another major battery
manufacturer).
The battery must be replaced at least every 5 years. See
description how best to replace the battery.
Issue 5
.
11
CWT S5 Installation & Maintenance Manual
Batteries
for a
62
Page 9
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