Laserliner AC-Check Non-Contact Voltage Tester

Introduction

Please read this operating manual, the enclosed "Warranty and Additional Information" booklet, and the latest information available via the internet link at the end of this manual completely. Follow the instructions provided. This document should be kept safe and passed on with the device.

Function / Application

The AC-Check is a non-contact voltage tester with adjustable sensitivity designed for locating electrical voltages in cables, sockets, lampholders, and fuses. Visual and acoustic signals indicate the presence of voltage.

Safety Instructions

• Use the device strictly according to its intended purpose and within the specified limits.
• Measuring tools and accessories are not toys. Keep them out of reach of children.
• Modifications or alterations to the device are not permitted and will invalidate the approval and safety specifications.
• Do not expose the device to mechanical stress, extreme temperatures, or significant vibration.
• Exercise extreme caution when working with voltages higher than 24 V/AC rms or 60 V/DC. Touching electrical conductors at these voltages poses a risk of life-threatening electric shocks.
• If the device comes into contact with moisture or other conductive residue, do not work under voltage. At and above voltages of 24 V/AC rms / 60 V/DC, moisture increases the risk of life-threatening electric shocks.
• Clean and dry the device before use.
• When using the device outdoors, ensure appropriate weather conditions and/or suitable protective measures are in place.
• In overvoltage category III (CAT III - 1000V), the voltage between the test device and earth must not exceed 1000V.
• Before taking any measurements, verify that the area to be tested (e.g., a line), the test device, and any accessories used are in proper working order. Test the device by connecting it to known voltage sources (e.g., a 230 V socket for AC testing).
• The device must no longer be used if one or more of its functions fail or the battery charge is weak.
• Observe safety precautions from local and national authorities regarding the correct use of the device and any prescribed safety equipment (e.g., electrician's safety gloves).
• Do not work alone in the vicinity of hazardous electrical installations; always work under the guidance of a qualified electrician.
• This measuring device is not a substitute for a two-pole zero potential test.

Optical Emission (OStrV) Safety Instructions

The device uses LEDs of risk group RG 0 (exempt, no risk) in accordance with current standards for photobiological safety (EN 62471:2008-09ff / IEC/TR 62471:2006-07ff).

• Radiation power: Peak wavelength is 456 nm. Mean radiance is below the limit values for risk group RG0.
• When used as intended and under reasonably foreseeable conditions, the accessible LED radiation is safe for the human eye and skin.
• Temporary, irritating optical effects (e.g., dazzling, flash blindness, afterimages, colour vision impairment) cannot be entirely ruled out, especially in low ambient light.
• Do not intentionally look directly into the radiation source for extended periods.
• No specific measures are required to ensure the limit values of risk group RG 0 are maintained.

Electromagnetic Radiation Safety Instructions

• The measuring device complies with electromagnetic compatibility regulations and limit values according to EMC Directive 2014/30/EU.
• Be aware of local operating restrictions, such as in hospitals, aircraft, petrol stations, or near individuals with pacemakers. Electronic devices can potentially cause or be subject to hazards or interference.

Symbols

⚠️ [Warning: Hazardous Electrical Voltage]: Unprotected live components inside the device housing can pose a risk of electric shock.

[Protection Class II]: The test device features reinforced or double insulation.

[Overvoltage Category III]: Equipment in fixed installations and for applications requiring high reliability and availability, such as circuit-breakers in fixed installations and devices permanently connected to the fixed installation for industrial use.

Device Overview

The AC-Check features the following components:

• 1. Detector tip: The sensing tip for voltage detection.
• 2. ON/OFF / Adjustment Wheel: Controls power and adjusts sensitivity.
• 3. Pocket clip: For convenient attachment.
• 4. Flashlight button/lamp: Activates the integrated flashlight.
• 5. Battery lamp: Indicates battery status.
• 6. Battery compartment: Located on the rear of the device.

Inserting Batteries

Open the battery compartment on the rear of the device. Insert two 1.5V AAA alkaline batteries, paying close attention to the correct polarity ([+] and [-] symbols).

Important: Before using the device, always test it on a known operational circuit within its specified voltage range. To avoid inaccurate measurements, check the device batteries prior to use by switching on the integrated flashlight (see section 5).

Operation

Localizing Electrical Voltages

1. Position the detector tip in the area to be tested (e.g., cable, socket, fuse holder).
2. If voltage is present, the detector tip will light up, and an acoustic signal will sound.

The presence of live lines can be determined by adjusting the sensitivity.

⚠️ For safety, check all three phase conductors (L1, L2, L3) for the presence of voltage.

⚠️ If the acoustic signal is weak or the battery lamp is not as bright as it should be, replace the batteries.

Note: Be aware that voltage may still be present even if no visual signal is displayed. Differences in connection socket design or insulation type (thickness and type) can affect functionality. Voltage cannot be detected behind panels and metal covers.

Adjustment of Sensitivity

By turning the adjustment wheel (2), the sensitivity of the device (5 ... 1000 VAC) can be adjusted. This allows voltage fields to be located at a significant distance by moving the device over the area to be tested.

When voltage is present, the detector tip lights up and a signal sounds.

Battery Lamp

To switch on the integrated flashlight, press and hold button 4. The light switches off automatically when the button is released. ?

Maintenance and Care

• Clean all components with a slightly damp cloth. Avoid using cleaning agents, scouring agents, or solvents.
• Remove the batteries before storing the device for extended periods.
• Store the device in a clean and dry place.

Technical Data

Subject to technical alterations. 11.17

EU Directives and Disposal

This device complies with all necessary standards for the free movement of goods within the EU. CE

This product is an electrical device and must be collected separately for disposal according to the European Directive on waste electrical and electronic equipment. [WEEE disposal symbol]

Further safety and supplementary notices are available at: http://laserliner.com/info?an=acchk

Service and Contact

Laserliner

Manufactured by Umarex GmbH & Co. KG

Laserliner Division
Möhnestraße 149
59755 Arnsberg, Germany

Tel.: +49 2932 638-300
Fax: +49 2932 638-333
Email: info@laserliner.com

Umarex GmbH & Co. KG
Donnerfeld 2
59757 Arnsberg, Germany

Tel.: +49 2932 638-300
Fax: -333
Website: www.laserliner.com