HT instruments М75 - Manual (Page 41)

M72 - M73 - M74 - M75
EN - 39
5. MAINTENANCE
5.1. GENERAL
This is a precision instrument. Strictly follow the instructions for use and storage reported
in this manual to avoid any possible damage or danger during use. Do not use this tester
under unfavorable conditions of high temperature or humidity. Do not expose to direct
sunlight. Be sure to turn off the tester after use. If the instrument is not to be used for a
long period you are recommended to remove batteries to avoid leakages of battery liquid
which may damage its internal circuits.
5.2. BATTERY
REPLACEMENT
When the low battery indication " " 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 the input terminals to avoid
electrical shocks.
1. Switch off the instrument
2. Remove test leads from the input terminals
3. Remove the battery compartment cover by using a screwdriver
4. Remove all batteries replacing them with new ones all of the same type (refer to § 6.2)
respecting the polarity signs
5. Re-allocate the battery pack taking care that the part from which the black and red
wires come out is positioned backwards
6. If the battery pack is re-allocated in a wrong way, the battery compartment can not be
closed. In this case do not force the plastic parts, but re-position the battery pack
correctly before closing
7. Replace the battery compartment cover making a pressure to close it
8. Use the appropriate battery disposal methods for your area
5.3. CLEANING
Use a soft dry cloth to clean the instrument. Never use wet cloths, solvents, water, etc.
5.4. END OF LIFE
Caution: this symbol indicates that equipment and its accessories shall be
subject to a separate collection and correct disposal