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ZIRCON® STUD FINDERS WORK BY SENSING DENSITY CHANGES BEHIND THE WALL. OTHER OBJECTS CAN BE DETECTED ESPECIALLY IF THEY ARE VERY CLOSE TO THE WALL. DO NOT ASSUME EVERYTHING DETECTED IS A STUD.
3 scanning modes:
WireWarning Detection automatically detects and alerts for live, unshielded AC (alternating current) wires up to 50 mm deep in all modes.
Always use a new 9V alkaline battery with an extended expiration date at least 3 years beyond the current date. Match battery direction to image inside of battery cavity.
Do not rely exclusively on the tool to locate items behind a surface. Use other information to help locate items before penetrating the surface, including construction plans, visible points of entry of pipes and wiring into walls such as in a basement, and standard stud-spacing practices.
Move Mode Selector Switch to desired mode: StudScan, DeepScan, or Metal Scan.
To activate scanner, press and hold Power Button.
If Power Button is not pressed & held, unit shuts off.
For best results, hold the scanner as shown (Figure A) and move slowly when scanning. Do not touch the surface during calibration or scan.
DeepScan Mode can detect studs up to 38 mm deep.
To scan for deeper studs, or for use with thicker walls:
Use Metal Scan Mode to determine if the stud found is wood, or a metal stud or pipe.
DO NOT ASSUME THERE ARE NO LIVE ELECTRICAL WIRES IN THE WALL. DO NOT TAKE ACTIONS THAT COULD BE DANGEROUS IF THE WALL CONTAINS A LIVE ELECTRICAL WIRE. ALWAYS TURN OFF THE ELECTRICAL, GAS, AND WATER SUPPLIES BEFORE PENETRATING A SURFACE. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN ELECTRIC SHOCK, FIRE, AND/OR SERIOUS INJURY OR PROPERTY DAMAGE.
The Zircon® WireWarning Detection feature works continuously in all modes. When live, unshielded AC voltage is detected, the WireWarning Detection Indicator shows. If scanning begins over a live AC wire, the Indicator will flash continuously.
Use extreme caution under these circumstances, or whenever live AC wiring is present.
THE SCANNER MAY NOT DETECT LIVE CURRENT IF WIRES ARE MORE THAN 50 mm BELOW THE SCANNED SURFACE, IN CONCRETE, ENCASED IN CONDUIT, BEHIND A PLYWOOD SHEAR WALL OR METALLIC WALL COVERING, OR IF MOISTURE IS PRESENT IN THE ENVIRONMENT OR SCANNED SURFACE.
Wallpaper This scanner functions normally on walls covered with wallpaper or fabric, unless the materials are metallic foil, contain metallic fibres, or are still wet after application. Wallpaper may need to dry for several weeks after application.
Freshly painted walls It may take a week or longer to dry after application. If it is difficult to locate a stud in StudScan Mode on dry or freshly-dried paint, switch to Metal Scan Mode to locate the nails or drywall screws holding drywall to the studs.
Lath and plaster Due to irregularities in plaster thickness, it is difficult for this scanner to locate studs in either stud-scanning mode. Switch mode to Metal Scan Mode to locate the nail heads holding wood lath to the studs. If the plaster has metal mesh reinforcement, the scanner will be unable to detect studs through that material.
Highly textured walls or acoustic ceilings When scanning a ceiling or wall with an uneven surface, place thin cardboard on the surface to be scanned and scan over the cardboard in DeepScan Mode. If irregular scanning results are received, switch to Metal Scan Mode to locate nails or drywall screws that line up vertically where a stud or joist is positioned.
Wood flooring, subflooring, or gypsum drywall over plywood sheathing Use DeepScan Mode and move the scanner slowly. The Signal Strength Indicator may only display one or two bars when the scanner locates a stud through a thick surface.
This scanner cannot scan for wood studs and joists through carpet and padding. In problematic situations, try using Metal Scan Mode to locate nails or screws that may line up vertically or horizontally where a stud or joist is respectively positioned.
NOTE: Sensing depth and accuracy can vary depending on scanning environment conditions such as mineral content, moisture, texture, and consistency of the wall materials.
Electrical wiring and pipes Depending on the proximity of electrical wiring or pipes to the wall surface, the scanner may detect them in the same manner as studs. Caution should always be used when nailing, cutting, or drilling in walls, floors, and ceilings that may contain these items.
Studs and joists are normally spaced 40 or 60 cm apart on centre and are 38 mm wide. Anything closer together, or of a different width, may not be a stud or joist.
SITUATION | LIKELY CAUSE | SOLUTION |
Scanner detects objects other than studs in StudScan Mode or finds more studs than should be there. | Electrical wiring and metal or plastic pipes may be near, or touching, the back of the wall surface. |
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Difficulty detecting metal. | Scanner was calibrated over metal object, or metal object is too deep or too small. |
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Metal object reading appears wider than actual size. | Metal has a greater density than wood. | To reduce sensitivity in Metal Mode, recalibrate scanner over either of first two marks (see steps under SCAN FOR METAL). |
Constant readings of studs near windows and doors. | Multiple studs are in use. | Double and triple studs are sometimes used around doors and windows. Headers are used above them. Detect outer edges so you know where to begin. |
Electrical wires suspected but not detected. | Wires are shielded by a metal conduit, braided wire or metallic wall covering. | Use Metal Scan Mode to scan for metal, wire, or metal conduit. |
Wires deeper than 50 mm from the surface might not be detected. | If there is an outlet switch, turn it to ON position while scanning, but turn OFF when working near the wires. Use extra caution if the area has plywood, thick wood backing behind drywall, or walls that are thicker than normal. | |
Wires may not be live. | Plug a lamp into the outlet and turn it on to test whether wires are live. | |
Low Battery Indicator flashes and scanner does not operate. | Low battery. | Install a new 9V alkaline battery with an extended expiration date. |
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Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
Download Zircon MultiScanner L350 - Multifunction Wall Scanner Manual
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