Page 12 CWT Compact Touch Installation and Maintenanace Manual Issue 13
Some parts inside the terminal’s 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
In this Chapter:
•
Back-Up battery holder on CPU board
• Short-circuit risk
• Caustic acid
• Risk of explosion
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 Batteries for a
description how best to replace the battery.
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