HT instruments PQA824 - Manual (Page 125)

PQA400 - PQA823 - PQA824
EN - 124
8. MAINTENANCE
8.1. GENERAL
The PQA400 and PQA82x are precision meters. For their use and storage, follow the
recommendations and instructions of this manual in order to avoid possible damages or
dangers.
Never use the instrument in environments with a high humidity or temperature. Do not
expose the meter to direct sunlight. Always turn off the instrument after use.
8.2. SITUATIONS RELATIVE TO INTERNAL BATTERY
The meter is powered by a rechargeable Li-ION battery with 3.7VDC output voltage which
can be charged by using supplied external adapter under any function mode. The battery-
adapter packet defines several combinations which are shown through different icon in the
top right display as follows:
Icon at display Description
Too low battery level. Perform a battery charging
Residual battery charging at 25%
Residual battery charging at 50%
Residual battery charging at 75%
Battery fully charged
Only adapter connected. Battery disconnected
Battery and adapter connected. Recharging battery
Battery fully charged with adapter connected
Battery charge unknown. Connect adapter
Problem with battery. Contact HT ITALIA Technical Service
Table 14: List of battery icons at display
8.2.1. Replacement internal battery
CAUTION
Only qualified technicians should operate the instrument. Before replacing
the batteries disconnect the test leads from circuit under voltage in order to
avoid electrical shocks.
1. Disconnect voltage test leads and transducer clamps from any circuit on test.
2. Turn off the meter and disconnect all test cables from it.
3. Unscrew the screw of battery cover and remove it.
4. Disconnect the old battery from internal connector and insert the new in the same side.
5. Reposition the cover and fasten it with the proper screw.
8.3. CLEANING
Use a soft dry cloth to clean the meter. Do not use never wet clothes, solvents, water etc..
and take particular care at TFT display.
8.4. END OF LIFE
CAUTION: This symbol indicates that equipment and its accessories shall be
subject to a separate collection and correct disposal.