HT instruments HT712 - Manual (Page 14)

HT712
EN - 13
5. MAINTENANCE
5.1. GENERAL INFORMATION
This is a precision instrument. To guarantee its performances be sure to use it or keep it stored
on suitable environmental conditions. Do not expose it to high temperatures or humidity or
direct sunlight. Be sure to turn it off after use. If you expect not to use the instrument for a
long period remove batteries to avoid leakages of battery liquid which could damage the its
inner components.
5.2. BATTERY
REPLACEMENT
The low battery indication (refer to paragraph 6.1.3) is displayed the batteries are to be
replaced.
CAUTION
Only skilled technicians can open the instrument and replace batteries.
Before removing batteries disconnect the test leads from any energized
circuits to avoid electrical shocks.
1. Turn off the instrument.
2. Disconnect the test leads from the input terminal.
3. Take off the battery cover by unscrewing it. – Make a light pressure on the cover
screws and unscrew them one third counterclockwise. Remove the battery cover.
4. Remove all batteries from the battery holder.
5. Insert two new batteries of the same type (refer to paragraph 6.1.3) respecting the
polarity signs.
6. Reposition the battery cover, make a slight pressure on the cover screws and screw
them one third clockwise. The cover is properly fixed when the two points present on
the mobile cover correspond to the two points present on the fixed part of the battery
holder.
7. Do not throw flat batteries in the environment after use.
Opening Closing
Fig. 8: Opening and closing of battery cover
5.3. CLEANING
To clean the instrument use a soft dry cloth. Never use a wet cloth, solvents or water.
5.4. END OF LIFE
Caution: this symbol indicates that equipment and its accessories shall be
subject to a separate collection and correct disposal