2DI ThermaViewer, Manual

Page: 11 / 36

Battery Installation
11
Battery backup
The ThermaViewer has two types of batteries. One is a small “button” type battery that is not user
accessible. Its purpose is to ensure an accurate date and time. It has an estimated ten-year life
span. The second battery is a nine-volt, user-accessible battery requiring periodic replacement. Its
purpose is to supply temporary backup power during a power outage. Frequent power outages will
shorten battery life. After the battery has accumulated four hours of run time, it should be replaced.
1. Access may be gained through a small door on the top of the ThermaViewer (see illustration
one at left). The door may be opened by pressing gently and pushing it forward (see illustration
two at left). The door will separate from the ThermaViewer and the battery can be changed.
2. Gently remove the old battery by pulling out the two wires (red & black) and unsnapping the
connector from the battery. Snap the connector onto a new battery and insert it into the
compartment.
3. Replace the battery door by sliding it back into position.
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Operational Tip:
Battery life may be increased if Sleep Mode option is selected (see page 23). Due to the
potential for losing data, never replace the battery with the power supply disconnected.