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Maintenance
Important:
Before executing any maintenance always turn of the terminal
7.1
Batteries
7.1.1
Battery levels
The CWT S5 can send battery measurements of the battery voltage to
WebOffice for monitoring.
The CWT S5 will send the battery voltage measured during regular intervals to
WebOffice
The warning and error levels can be set but are default set to:
·
Warning = 11.9 V
·
Error = 11.5 V
When the CWT S5 has sent a warning, e.g. due to a power down, the terminal
will send a recovery event to WebOffice when the battery is charged to its
normal level again.
If a Warning is sent and no recovery event is sent within a day, it may be time to
change the battery
Note:
The gel type, lead-acid battery supplied by Flowbird is maintenance free but will
wear out over time.
Verify on a regular base if the contacts are not corroded. If so the battery and the
cable should be replaced as soon as possible.
Mains-powered terminal
The lead -acid battery needs replacement if the yellow light on the charger on a
mains-powered terminal remains lit even after a longer charging time.
7.1.2
Battery on CPU board
In some cases, the back-up batteries on the CPU boards are causing
malfunctions (real-time clock reset). This is caused by bad contact between the
contact springs of the battery holder and the coin cell battery.
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) and that it is kept clean. Oils from fingers (i.e. fingerprints) may
together with humidity and time cause problems. Such dirt may just as well be
deposited on the underside of the positive contact spring, if a dirty battery has
been mounted in the holder.
As the holder is made from a material impervious to most industrial solvents, you
may use almost any cleaning solvent at hand (isopropyl alcohol is
recommended). Flowbird recommends wearing cotton or latex gloves when
replacing batteries in order to prevent fingerprints on the battery surfaces. It is
Issue 5
CWT S5 Installation & Maintenance Manual
Page 62
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