HT instruments HT309 - Manual (Page 9)

HT309
EN - 8
5. MAINTENANCE
CAUTION
• Only expert and trained technicians should perform maintenance
operations. Before carrying out maintenance operations, disconnect all
cables from the input terminals.
• Do not use the instrument in environments with high humidity levels or
high temperatures. Do not expose to direct sunlight.
• Always switch off the instrument after use. In case the instrument is not to
be used for a long time, remove the battery to avoid liquid leaks that could
damage the instrument’s internal circuits.
5.1. BATTERY REPLACEMENT
When the display shows the “
” symbol, replace the battery.
1. Switch off the instrument using the ON/OFF key.
2. Press the battery compartment cover and slide it in the direction of the arrow.
3. Remove the old battery and replace it with a new battery of the same type (see § 6.1.3)
4. Restore the battery compartment cover to its position.
5. Do not dispose of the batteries together with household waste. According to European
Directives, old batteries must be disposed of separately and recycled.
5.2. CLEANING THE INSTRUMENT
Use a soft and dry cloth to clean the instrument. Never use wet cloths, solvents, water, etc.
The white plastic lens of the sensor may be cleaned, if necessary, with a wet cloth.
5.3. END OF LIFE
CAUTION: the symbol on the instrument indicates that the appliance, the battery
and its accessories must be collected separately and correctly disposed of.