Functional Description - Ecom Ex-DT 12 Operating Instructions Manual

7. Functional description /

operating information
Please take the time to carefully read through this
Owner's Manual to ensure that you are familiar
with all of the functions of your Ex-DT 12 and know
how to use all of the functions.
For your own safety and information please read
through the information on the following pages.
7.1 Getting started
Run a function test each time you use the device in
the ex-area. To do this, short circuit both test probes.
You will hear the so-called short circuit signal and the
LEDs in the test head illuminate.
If the short circuit signal is loud and clear, the battery
power is adequate. If this is not the case when new
batteries are fitted, send the device back to the facto-
ry for checking.
Batteries are factory-fitted.
7. 2 Replacing the batteries
Run a function test each time you use the device. To
do this, short circuit both test probes. You will hear
the so-called short circuit signal and the LEDs in the
test head illuminate.
If the short circuit signal is loud and clear, the battery
power is adequate. If this is not the case, the batteries
need replacing. It is advisable to replace both batte-
ries at the same time.
Only approved batteries may be used (see Table
listing type-approved batteries under Item 6. Technical
Data).