Scanning For “Live” Wires; Working Advice; Marking Objects - Bosch PMD 7 Original Instructions Manual

22 | English
Scanning for "Live" Wires
The measuring tool indicates wires, which carry voltage between 110 V
and 240 V and a frequency corresponding to the widely used standard
(AC with 50 or 60 Hz). Other wires (carrying DC, higher/lower frequency
or voltage) as well as non-"live" wires/conductors cannot be found re-
liably, but are possibly indicated as metal objects.
The detection for "live" wires/conductors takes place automatically with
every measurement. When a "live" wire/conductor is detected, the signal
LED 2 flashes red and an intermittent signal tone sounds with rapid tone
sequence. Move the measuring tool repeatedly over the surface to locate
the "live" wire/conductor more precisely. After moving over the surface
several times, the position of the "live" wire/conductor can be indicated
very accurately.
It is easier to find live cables if electricity consumers (e.g. lights,
appliances) are connected to the cable being searched for and are
switched on. Switch on electricity consumers before drilling, sawing or
milling into the wall.
Note: Always ensure that you hold the measuring tool firmly without
gloves to enable a good grounding. Also ensure that ladders/scaffolding
must be grounded. Avoid ladders/scaffolding whose supports have
plastic caps underneath them. Do not wear insulating footwear.
It may not be possible to find live cables in certain conditions (e.g. behind
metal surfaces, behind surfaces that are very dry or very damp). If the in-
dicator LED 2 lights up yellow or red over a large area, the material is elec-
trically shielded and you will not be able to find live cables accurately.

Working Advice

To avoid affecting the measurement, do not hold the measuring tool with-
in range of the sensor. This will enable you to obtain more accurate
measurement results.

Marking Objects

Detected objects can be marked as required. The outer edges of an object
are indicated by the colour change of the signal LED 2 from yellow to red.
The centre of the metal object can be determined by the pitch. Using a
pen, mark the sought after location at the top and the side marker aids 1.
2 609 141 285 | (7.7.15) Bosch Power Tools