Issue 13 CWT Compact Touch Installation and Maintenanace Manual Page 47
4.8.6 Heating system
The CWT Compact can be provided with heating in both the cabinet and the
pedestal by means of 100 W heating fans and thermostats adjustable between 0
and 60 °C.
Both the fan and the thermostat are mounted on existing DIN rails. The heating
fan is connected to one of the two 230 V (115 V UK) outlets (for the heating
radiator) and one 12 V outlet (for the fan itself) in the battery charger module
located in the pedestal.
4.9 Power supply
CWT Compact terminals are powered by a gel type, maintenance free lead-acid
battery placed in the pedestal of the terminal. The battery is charged by mains
power or solar power. In the latter case the terminal has a solar cell panel
mounted at the top.
Alternatively, the terminal can be powered from the battery only which requires
regular battery replacement. An alternative is to have the battery charged from a
power source that is regularly available, such as a street light post.
Danger:
Always ensure that the external power supply to the terminal is disconnected or
switched OFF before carrying out any work on parts that ordinarily conduct
dangerous current.
4.9.1 Power control
The battery voltage can be measured automatically on a regular basis and a
report can be sent to CWO periodically. See the CWT Software Configuration
Handbook.
Figure 37, Door-open sensor in the pedestal.
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