BOSCH WEU Truvo Digital Detector Instruction Manual

: June 9, 2024
: Bosch

Table of Contents

Overview
Safety Notes
Product Description and Specifications
Assembly
Operation
Maintenance and Service
Troubleshooting – Causes and Corrective Measures
Disposal
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

BOSCH WEU Truvo Digital Detector Instruction Manual

Overview

Safety Notes

Read and observe all instructions. The integrated protections in the measuring tool may be compromised if the measuring tool is not used in accordance with the instructions provided. SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

Have the measuring tool repaired only through qualified specialists using original spare parts. This ensures that the safety of the measuring tool is maintained.
Do not operate the measuring tool in explosive environments, such as in the presence of flammable liquids, gases or dusts. Sparks can be created in the measuring tool which may ignite the dust or fumes.
The measuring tool may not be 100% accurate for technological reasons. For this reason and to eliminate hazards, familiarise yourself with the area using other sources of information, such as building plans and photographs taken during construction, etc. before carrying out any drilling, sawing or milling work on walls, ceilings or floors. The accuracy of the measuring tool may be affected by environmental influences, such the level of humidity or there being other electronic devices nearby. The structure and condition of the walls (e.g. damp, building materials containing metal, electrically conductive wallpaper, insulating materials, tiles) and the number, type, size and position of the objects may distort the measurement results. Inaccurate readings may be caused, for example, by the building materials (especially plaster and tiles) being made damp through high humidity. These influences may result in the indicator LED lighting up green despite there being an object within range of the sensor, or in the indicator LED lighting up red despite there not being an object within range of the sensor.
Make sure that you are properly earthed when taking measurements. If you are not properly earthed (e.g. by wearing insulating footwear or by standing on a ladder), it will not be possible to locate live cables.

Product Description and Specifications

Intended Use

The measuring tool is intended for the detection of ferrous metals (e.g. reinforced steel), non-ferrous metals (e.g. copper pipes) as well as “live” wires/conductors in walls, ceilings and floors.

Product Features

The numbering of the product features shown refers to the illustration of the measuring tool on the graphic page.

Marking aid
Signal LED
On/Off switch
Latch of battery lid
Battery lid
Serial number
Sensor area

Technical Data

Digital Detector: Truvo
Article number: 3 603 F68 2..
*Maximum scanning depth:
– Ferrous metals: 70 mm
– Non-ferrous metals(copper pipe): 60 mm
– Copper conductors (live): 50 mm
Calibration: automatic
Automatic switch-off after approx:. 10 min
Operating temperature: 0 °C…+40 °C
Storage temperature: –20 °C…+70 °C
Relative humidity: 30 … 80 %
Batteries: 3 x 1.5 V LR3 (AAA)
Operating lifetime (alkali-manganese batteries) approx.: 5 h
Weight according to EPTA-Procedure 01:2014 : 0.15 kg

In terms of accuracy and scanning depth, the measurement result can be inferior in case of unfavourable surface quality of the base material.

The measuring tool can be clearly identified with the serial number 6 on the type plate.

Assembly

Inserting/Replacing the Batteries
Alkali-manganese batteries are recommended for the operation of the measuring tool.

To open the battery lid 5, press on the latch 4 and fold the battery lid up. Insert the batteries. When inserting, pay attention to the correct polarity according to the representation on the inside of the battery compartment.

Remove the batteries from the measuring tool when not using it for extended periods. When storing for extended periods, the batteries can corrode and self-discharge

Operation

Initial Operation

Protect the measuring tool against moisture and direct sun light.
Do not subject the measuring tool to extreme temperatures or variations in temperature. As an example, do not leave it in vehicles for a long time. In case of large variations in temperature, allow the measuring tool to adjust to the ambient temperature before putting it into operation. In case of extreme temperatures or variations in temperature, the accuracy of the measuring tool can be impaired.
Avoid heavy impact to or falling down of the measuring tool.

Switching On and Off

Before switching the measuring tool on, make sure that the sensor area 7 is not moist. If required, dry the measuring tool using a soft cloth.
To switch on the measuring tool, slide the On/Off switch 3 downwards.

After a short self-test, the tool is ready for use. The readiness of use is indicated when the signal LED 2 illuminates. If the signal LED 2 fails to illuminate after switching on the tool, you must replace the batteries.

To switch off the measuring tool, slide the On/Off switch 3 upwards.

When no measurements are carried out for approx. 10 minutes, the measuring tool switches off automatically in order to extend the service life of the batteries.

Note: The on/off switch 3 will remain in the “on” position when the measuring tool switches itself off automatically. To switch the measuring tool back on, switch it off first before switching it on again.

Operating Modes

The measuring tool detects objects below the sensor area 7.

Signal LED	Explanation
green	no object detected
yellow

metal object in the vicinity of the sensor
small or low-lying metal object within the sensor area or
impairment of the sensor due to unfavourable wall material

red and continuous tone| metal object detected in the sensor area
red flashing (fast) and intermittent sound| “live” wire/conductor detected

Detecting Metal Objects

After switching on, the signal LED 2 lights up green. Position the measuring tool on/against the surface being detected and move it sideways.

If no metal object is visible in the base material, then the signal LED 2 continues to illuminate green and no signal tone sounds.
When the measuring tool comes closer to a metal object, the signal LED 2 first lights up yellow and changes to red the closer it comes to the metal object. As soon as the signal LED lights up red, a signal tone is also emitted, the pitch of which rises the closer it comes to the metal object.
Over a metal object, the signal LED 2 illuminates red and a signal tone is emitted at maximum pitch.
Even with a yellow signal LED 2, a metal object may be located below the sensor area. Small or low-lying metal objects are located in the vicinity of the sensor or the wall material impairs the measurement results

After moving over the surface the first time, the position of the metal object is only roughly indicated. If you move the measuring tool over the metal object several times, the object detection will become increasingly precise. After moving over the metal object several times (without lifting the measuring tool from the base material), its position can be indicated very accurately: if the signal LED 2 illuminates red and the signal tone sounds, the metal object is below the sensor area. When the pitch of the signal tone is highest, the metal object is located below the centre of the sensor.

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 reliably, 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 off 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 indicator LED 2 lights up yellow or red over a large area, the material is electrically 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 within 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.

Continuous Flashing Green/Yellow/Red

If the signal LED 2 flashes alternately green, yellow and red, even when no metal object or no “live” cable is in the vicinity, the measuring device must be sent in for service

Maintenance and Service

Manual Calibration

If the signal LED 2 illuminates red or yellow, even when no metal is in the vicinity of the measuring tool, the tool must be recalibrated.

To do this, switch the measuring device on using the On/Off switch 3.
Remove a battery from the switched on measuring device.
While the battery is removed, switch the measuring device off using the On/Off switch 3.
Reinsert the batteries into the measuring device (pay attention to the polarity!).
Now remove all objects in the vicinity of the measuring device (including wrist watches or rings of metal) and hold the measuring tool up in the air.
Switch the measuring device on using the On/Off switch 3 and off again within 3 seconds. The signal LED 2 of the measuring device will flash red in slow succession during the 3 seconds to indicate that it is ready to calibrate.
Switch the measuring device back on within 0.5 seconds. The calibration is initiated and takes about 6 seconds. The signal LED 2 will flash green for 6 seconds in quick succession, the calibration is being performed. Now the device is once more ready for operation and the signal LED 2 illuminates solid green.

Note: If the sequence of switching off then on again is not followed, no calibration is performed. The signal LED 2 remains either yellow or red, even though no metal is located within the vicinity. In this case, repeat the calibration.

Troubleshooting – Causes and Corrective Measures

Cause

|

Corrective Measure

---|---
Signal LED 2 does not illuminate.
Measuring tool is not switched on| Switch the measuring tool on.
Measuring tool has switched itself off| Switch the measuring tool off and then on again.
Batteries have not been inserted or been inserted incorrectly| Insert batteries. Pay attention to the polarity
Flat or rechargeable batteries inserted| Replace batteries. Do not use rechargeable batteries.
Signal LED 2 illuminates yellow or red, even though no metal is located within the vicinity (warning of metal objects).
Ambient temperature is too high/too low| Only use the measuring tool within the specific temperature range of 0 °C–40 °C.
Severe temperature change| Wait until the measuring tool acclimates to the ambient temperature.
Auto calibration not successful| Perform a manual calibration.
Signal LED 2 lights yellow or red over large measuring area on the wall (warning of metal objects).
Many, closely spaced metal objects| Pay attention to the pitch of the signal sound to differentiate between individual metal objects. Metal objects that are too closely spaced, cannot be detected separately.
Building materials containing metal or reinforcing steel in the concrete| A reliable detection is not possible with metallic building materials (e.g. foil-laminated insulation materials, heat sinks).
Solid metal objects on the back of the wall| Detection will not be accurate in the presence of solid metal objects (e.g. radiators).
Auto calibration not successful| Perform a manual calibration
Signal LED 2 flashes red over a large measuring area on the wall (warning of “live” cables)
Improper grounding of the wall| With your free hand, touch the wall at a distance of 20–30 cm from the measuring tool to ground the wall
“Live” cable is not found.
No/atypical voltage on the cable| Add voltage to the cable, for example by turning on light switches assigned to it. The detection of cables with AC voltages outside of the range 110–240 V, 50–60 Hz is not reliably possible.
Cable is located too deep.| The scanning depth is dependent on the building material and may be less than the maximum scanning depth.
Cable runs in grounded metal pipe.| Use the measuring tool to locate the metal pipe.
Measuring tool is not grounded| Hold the measuring tool firmly without gloves. Do not stand on insulating ladders or scaffolding. Do not wear insulating footwear.
Shielding building material or humidity too low/too high| Detection will not be accurate in the presence of metallic building materials or building materials that are too dry or too damp (e.g. if the humidity is too low or too high).
Metal object is not located.
Metal object is located too deep.| The scanning depth is dependent on the building material and may be less than the maximum scanning depth.
Metal object is too small| The scanning depth is dependent on the building material and may be less than the maximum scanning depth.
Uncoordinated flashing in colours green, yellow, red
Interference caused by electric or magnetic fields| Keep your distance from devices emitting strong electric or magnetic fields (e.g. computers, switch mode power supplies).
Measurement results inaccurate/implausible
Interfering metal objects in the area of the sensor| Remove all interfering metal objects (e.g. watches, bracelets, rings, etc.) from within range of the sensor. Do not hold the measuring tool close to the sensor
Auto calibration not successful| Perform a manual calibration
Continuous flashing green/yellow/red, even when no metal or “live” cable is in the vicinity
Measuring tool is defective.| Send the measuring tool in for service.

Therefore, please also observe other information sources (e.g. construction plans) before drilling, sawing or routing into walls, ceilings or floors.

Maintenance and Cleaning

Wipe away debris or contamination with a dry, soft cloth. Do not use cleaning agents or solvents.

In order not to affect the measuring function, decals/stickers or name plates, especially metal ones, may not be attached in the sensor area 7 on the front or back side of the measuring tool.

After-sales Service and Application Service

Our after-sales service responds to your questions concerning maintenance and repair of your product as well as spare parts. Exploded views and information on spare parts can also be found under: www.bosch-pt.com
Bosch’s application service team will gladly answer questions concerning our products and their accessories.

In all correspondence and spare parts orders, please always include the 10-digit article number given on the nameplate of the product

Great Britain

Great Britain
Robert Bosch Ltd. (B.S.C.)
P.O. Box 98
Broadwater Park
North Orbital Road
Denham
Uxbridge
UB 9 5HJ
At www.bosch-pt.co.uk you can order spare parts or arrange the collection of a product in need of servicing or repair.
Tel. Service: (0344) 7360109
E-Mail: boschservicecentre@bosch.com

Ireland
Origo Ltd.
Unit 23 Magna Drive
Magna Business Park
City West
Dublin 24
Tel. Service: (01) 4666700
Fax: (01) 4666888

Australia, New Zealand and Pacific Islands

Robert Bosch Australia Pty. Ltd.
Power Tools
Locked Bag 66
Clayton South VIC 3169
Customer Contact Center
Inside Australia:
Phone: (01300) 307044
Fax: (01300) 307045
Inside New Zealand:
Phone: (0800) 543353
Fax: (0800) 428570
Outside AU and NZ:
Phone: +61 3 95415555
www.bosch.com.au

Republic of South Africa

Customer service
Hotline: (011) 6519600

Gauteng – BSC Service Centre
35 Roper Street, New Centre
Johannesburg
Tel.: (011) 4939375
Fax: (011) 4930126
E-Mail:bsctools@icon.co.za

KZN – BSC Service Centre
Unit E, Almar Centre
143 Crompton Street
Pinetown
Tel.: (031) 7012120
Fax: (031) 7012446
E-Mail:bsc.dur@za.bosch.com

Western Cape – BSC Service Centre
Democracy Way, Prosperity Park
Milnerton
Tel.: (021) 5512577
Fax: (021) 5513223
E-Mail:bsc@zsd.co.za

Bosch Headquarters
Midrand, Gauteng
Tel.: (011) 6519600
Fax: (011) 6519880
E-Mail:rbsa-hq.pts@za.bosch.com