Working Advice - Bosch PMD 7 Original Instructions Manual

OBJ_BUCH-1913-002.book Page 20 Monday, September 23, 2013 12:33 PM

20 | 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 relia-

bly, 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.

"Live" wires/conductors can be detected more easily when power con-

sumers (e.g. lamps, appliances) are connected to the wire being sought

and switched on.

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 plas-

tic caps underneath them. Do not wear insulating footwear.

Under certain conditions (e.g. below metal surfaces or behind surfaces

with high water content), "live" wires/conductors cannot be securely de-

tected. When the signal LED 2 illuminates yellow or red over a larger area,

then the material is screening-off electrically and the detection for "live"

wires/conductors is not reliable.

 Measuring values can be impaired through certain ambient condi-

tions. These include, e.g., the proximity of other equipment that

produce strong magnetic or electromagnetic fields, moisture, me-

tallic building materials, foil-laminated insulation materials or

conductive wallpaper or tiles. Therefore, please also observe other

information sources (e.g. construction plans) before drilling, sawing

or routing into walls, ceilings or floors.

Note: Do not hold the device in the area of the sensor, so as not to affect

the measurement. This achieves more accurate measurement results.

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Bosch Power Tools