DL9110 / DL9118
Operating Instructions
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8 Maintenance
Before opening the DL9110 / DL9118 ensure that it is
disconnected from all voltage! Electric shock danger!
8.1 Preparing to work on the DL9110 / DL9118.
Make the DL9110 / DL9118 is voltage free as follows, before opening
the instrument;
Power the unit off using the rotary switch by selecting the Off position
on the rotary switch.
Disconnect all of the test leads from the unit
8.2 Securing the DL9110 / DL9118
Under certain conditions safe operation of the DL9110 / DL9118 can no
longer be assumed:
Visible damage of the instrument case.
Incorrect measurement results.
Recognisable abuse to the instrument due to prolonged storage under
improper conditions.
Recognisable abuse to the instrument due to extraordinary
transportation stress.
Check the battery compartment for signs of battery electrolyte leakage.
In these cases, the DL9110 / DL9118 should be immediately switched
off, disconnected from any test or measurement function and secured
to prevent any further use.
8.3 Cleaning
Clean the external case of the DL9118 with a clean dry cloth.
