Quick start manual

STER PMU Quick Start Manual Instrument maintenance
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5.3 BATTERIES
Instrument contains rechargeable NiMh batteries. These batteries should only be replaced with the same type as
defined on the battery placement label or in this manual.
If it is necessary to replace batteries, all six have to be replaced. Ensure that the batteries are inserted with the
correct polarity; incorrect polarity can damage the batteries and/or the instrument.
PRECAUTIONS ON CHARGING NEW BATTERIES OR BATTERIES UNUSED FOR A LONGER PERIOD
Unpredictable chemical processes can occur when charging new batteries or batteries that were unused for a
longer period of time (more than 3 months). This effect, sometimes referred to as memory effect, can affect both
NiMH and NiCd batteries. As a result, device operation time can be significantly reduced.
Therefore it is recommended:
1. To completely charge the batteries.
2. To completely discharge the batteries (can be performed with normal working with the instrument).
3. Repeating the charge/discharge cycle for at least two times (four cycles are recommended).
4. When using external intelligent battery chargers one complete discharging /charging cycle is performed
automatically.
After performing this procedure a normal battery capacity should be restored, and operation time of the device
should meet the data in the technical specifications.
NOTES
The charger in the instrument is a pack cell charger. This means that the batteries are connected in series during
the charging so all batteries have to be in similar state (similarly charged, same type and age). Even one
deteriorated battery (or just of another type) can cause an improper charging of the entire battery pack (heating of
the battery pack, significantly decreased operation time).
If no improvement is achieved after performing several charging/discharging cycles the state of individual batteries
should be determined (by comparing battery voltages, checking them in a cell charger etc). It is very likely that only
some of the batteries are deteriorated.
The effects described above should not be mixed with normal battery capacity decrease over time. All charging
batteries lose some of their capacity when repeatedly charged/discharged. The actual decrease of capacity versus
number of charging cycles depends on battery type and is provided in the technical specification of batteries
provided by battery manufacturer.
5.4 POWER SUPPLY CONSIDERATIONS
Warning!
 Use only charger supplied by manufacturer.
 Disconnect power supply adapter if you use standard (non-rechargeable) batteries.
 When using the original power supply adapter/charger the instrument is fully operational immediately after
switching it on. The batteries are charged at the same time, nominal charging time is 4 hours.
 The batteries are charged whenever the power supply adapter/charger is connected to the instrument. Inbuilt
protection circuit controls the charging procedure and assure maximal battery lifetime.
 If the instrument is left without batteries and charger for more than 2 minutes, time and date settings are
reset.
5.5 CLEANING
To clean the surface of the instrument use a soft cloth slightly moistened with soapy water or alcohol. Then leave
the instrument to dry totally before use.
Warning!
 Do not use liquids based on petrol or hydrocarbons!
 Do not spill cleaning liquid over the instrument!