Amprobe DM-4 Power-Quality-Recorder - Manual (Page 41)

12. MAINTENANCE
12.1 GENERAL
The DM-4 is a precision instrument. For its’use and storage, follow the recommendations
and instructions contained in this manual in order to avoid possible damages. Never use
the instrument in environments with a high humidity or temperature. Always turn off the
instrument if it is not in use.
12.2 BATTERY REPLACEMENT
When the battery indicator indicates less than 50% ( q ), the batteries must
be replaced.
m
1) Disconnect cables and clamps from the circuit under test.
2) Turn the instrument off by pressing ON/OFF push button.
3) Remove the cables from the input terminals.
4) Unscrew the screw of the battery cover and remove the cover.
5) Replace the batteries with 8 new 1.5 V - AA. (Alkaline LR6 is strongly recommended.)
6) Reposition the cover and fasten it with the proper screw.
12.3 CLEANING
Use a soft dry cloth to clean the instrument. Do not use wet clothes, solvents,
water and so on.
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DM-4 Power Quality Recorder
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.