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Maintenance
also recommended to inspect the positive spring contact to establish that it has
not been bent upwards to such an extent that the pushing force has been
affected, even as it is made of spring steel.
To prevent excessive bending of the positive contact spring, Flowbird
recommends using of a pair of plastic (or otherwise insulated) pliers when
mounting new batteries. The coin cell should be pushed in such that the cell is in
contact with the plastic housing of the battery holder, not bending the positive
contact spring upwards more than necessary.
The CPU board contains a lithium battery (button cell) that should be returned for
recycling if required according to local laws and regulations. The battery
(CR2032, 3 V, 210 mAh, 20 mm diameter) supplies backup voltage to the real-
time clock in case of interrupted power supply from the 12 V batteries.
Important:
To ensure uninterrupted terminal operation; replace the battery every 5 years.
Warning:
Lithium batteries can be dangerous because they can explode if short-circuited.
Handle batteries in accordance with local laws and regulations.
7.1.3
Lead-acid batteries
Follow normal procedures for the handling of lead-acid batteries. Instructions are
usually available from the battery supplier.
Follow local regulations for the disposal of replaced batteries. Used batteries
should be returned for recycling if required according to local laws and
regulations.
Note:
The gel type, lead-acid battery supplied by Flowbird is maintenance free.
Verify on a regular base that the contacts are not corroded. If so the battery and
the cable should be replaced as soon as possible.
7.1.4
Battery replacement
7.1.4.1 CPU board lithium cell replacement
Warning:
Lithium batteries can be dangerous because they can explode if short-circuited.
Handle batteries according to local laws and regulations.
Removal
Carefully lift the battery holder tongue a little when you remove the battery cell.
Warning:
Avoid using conductive objects due to the risk of short circuiting the battery.
Issue 5
CWT S5 Installation & Maintenance Manual
Page 63
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