MARK
1. INSTALLING THE BATTERY
Press battery door release in with your finger or a coin and lift up
to remove door.
Place brand new 9V alkaline battery into the compartment and
press into place.
Replace battery door and snap shut.
2. SELECTING THE MODE
Move selector switch to the desired mode: STUD SCAN for finding wood
or metal studs; METAL SCAN for locating metal; or AC SCAN for locating
hot AC wiring.
Move selector switch to the OFF position when not in use to prevent the
tool from accidentally powering on and wearing down the battery.
3. FINDING A STUD
Always scan for studs with the tool placed flat against the
wall. Move the mode switch to STUD SCAN, place the tool
against the wall, then press and hold the handle down.
Wait for beep to confirm calibration has completed
before moving tool.
Slowly slide tool across
surface. EDGE display will
illuminate, indicating
location of the stud edge.
Continue sliding tool.
When the center of stud
is located with three bars
on the Signal Strength
Indicator, the buzzer will
sound, and the four middle
bars, CENTER display, and
SpotLite
®
Pointing System
will illuminate.
In cases of deeper studs
(or thicker walls), two bars
will show on the Signal
Strength Indicator and only
the SpotLite
®
Pointing
System and four middle
bars will illuminate. If you
still can’t locate a stud, try
the next step.
Quickly (within one second)
release and re-press the
handle down. The scanner
will enter the High
Sensitivity Mode and the
STUD SCAN Mode Indication
will flash continuously. The center of a very deep stud
will be indicated by the four middle bars illuminating.
4. OPERATING TIPS
For optimum scanning results, it is important to properly hold MultiScanner
®
740 and move
slowly when scanning. The following tips will ensure accurate scanning results:
• Grasp the handle with your thumb on one side and your fingers on
the other side. Make sure your fingertips are resting on or above the
running board and not touching the surface being scanned or the
scanning head of the tool.
• Hold the tool straight up and down, parallel to the studs, and do not
rotate the tool.
• Keep tool flat against the wall and do not rock or tilt the tool when
slowly sliding across the surface being scanned.
• Make sure your other hand (or any other part of your body) is not
touching the surface being scanned. This will interfere with the
tool’s performance.
5. CALIBRATING THE TOOL
MultiScanner
®
740 constantly monitors the subsurface environment 10 times per second
and automatically recalibrates, when needed, to successfully find the center of studs in
one step!
• Place MultiScanner
®
740 against the wall and press the handle until it lays flat against
the wall. Pressing the tool to lay flat against the wall will automatically power on the tool
via the internal On/Off switch.
• Once powered on, tool will automatically perform all calibrations. The LCD will display all
icons until calibration is complete. Upon completion of calibration, the SpotLite
®
and buzzer
will momentarily activate and the tool will begin continuous measurements. Continue to
press the tool flat against the wall and begin scanning.
Note: It is important to wait for calibration to complete (1–2 seconds) before moving
the tool.
• ACT
™
(Auto Correcting Technology)—During scanning, the tool will automatically recalibrate
itself when needed. This recalibration is
usually transparent and no indication is
made. If the tool is initially calibrated
near a stud and then moved away
(it will detect the density of the wall
decreasing), an arrow icon will be
illuminated, indicating the direction of
the missed stud.
Dual SpotLite
®
Pointing System
Stud Edge Groove
Backlit LCD
Mode Selector
Switch
Battery
(back of tool)
Stud Scan Mode
Indication
Stud Edge or
Center Indication
AC Mode &
WireWarning
®
Indication
Metal Mode
Indication
Auto Recalibration
Indication
Signal Strength
Indicator
Dual SpotLite
®
Erasable Marker
Button
Running Board
Metal Sensor
(back of unit)
The MultiScanner
®
740 features three scan modes:
• STUD SCAN: Locates the center and edges of
wood and metal studs up to 1½ in. (38 mm) deep
• METAL SCAN: Detects and locates ferrous
(magnetic) metal up to 3 in. (76 mm) deep and
non-ferrous (non-magnetic) metal up to 1½ in.
(38 mm) deep
• AC SCAN: Detects and locates live unshielded AC
wires up to 2 in. (51 mm) deep
WireWarning
®
Detection automatically detects and
alerts the user to live AC wires in STUD SCAN
and METAL SCAN modes.
arnoldingallsmoranvilleadvertising
Figure A
Figure B
Figure C
Visit www.zircon.com/support for the most current instructions.
ACT, CenterVision, MultiScanner, OneStep, SpotLite, StudSensor, WireWarning, and Zircon are registered trademarks or trademarks of Zircon Corporation.
Detects objects
besides studs in
STUD SCAN Mode.
Finds more targets
than there should be.
Area of voltage appears
much larger than actual
wire (AC only).
Difficulty detecting
metal.
Image of metal object
appears wider than
actual size.
Constant readings of
studs near windows
and doors.
You suspect electrical
wires, but do not
detect any.
• Electrical wiring and metal/plastic pipes may
be near or touching back surface of wall.
• Static charge may develop on drywall, spreading
voltage detection as much as 12 in. (305 mm)
laterally from each side of an actual electrical wire.
• Tool calibrated over metal object.
• Metal targets too deep or small.
• Metal has greater density than wood.
• Double and triple studs are usually found
around doors and windows. Solid headers are
above them.
• Wires are shielded by metal conduit, a braided
wire layer, or metallic wall covering.
• Wires deeper than 2 in. (51 mm) from surface
might not be detected.
• Wires may not be live.
• Scan the area in METAL and AC SCAN modes to determine if metal or
hot AC is present.
• Check for other studs equally spaced to either side 12, 16, or 24 in. (305, 406, or
610 mm) apart or the same stud at several places directly above or below the first.
Use CAUTION when nailing, sawing, or drilling in walls, floors, and ceilings
where these items may exist.
• To narrow detection, turn unit off and on again at the edge of where wire was first
detected and scan again.
• Place your free hand flat against wall near tool during the entire scan to drain static.
• The scanner may have been calibrated over a metal object, reducing sensitivity.
Try calibrating in another location.
• Scan in both horizontal and vertical directions. Metal sensitivity is increased when
metal object is parallel to sensor, located under Zircon logo.
• To reduce sensitivity, follow Step 7 and recalibrate MultiScanner
®
740 over either of
first two marks. (Metal mode only.)
• Detect outer edges so you know where to begin.
• Try METAL SCAN to see if you can find metal, wire, or metal conduit.
• Always turn off the power when working near electrical wires.
• Try turning on switches to outlet.
• Try plugging a lamp into outlet and turning on switch.
12. HELPFUL HINTS (See also number 4, OPERATING TIPS)
Situation Probable Cause Solution
EN
ZirconCorporation ZirconTV
ZirconTools
|
ZirconToolPro
ZirconTools
LIMITED 1 YEAR WARRANTY
Zircon Corporation, (“Zircon”) warrants this product to be free from defects in materials and workman-
ship for one year from the date of purchase. Any in-warranty defective product returned to Zircon*,
freight prepaid with proof of purchase date and $5.00 to cover postage and handling, will be repaired
or replaced at Zircon’s option. This warranty is limited to the electronic circuitry and original case of the
product and specifically excludes damage caused by abuse, unreasonable use or neglect. This warranty
is in lieu of all other warranties, express or implied, and no other representations or claims of any nature
shall bind or obligate Zircon. Any implied warranties applicable to this product are limited to the one year
period following its purchase. IN NO EVENT WILL ZIRCON BE LIABLE FOR ANY SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM POSSESSION, USE OR MALFUNCTION OF THIS PRODUCT.
In accordance with government regulations, you are advised that: (i) some states do not allow limitations
on how long an implied warranty lasts and/or the exclusion or limitation of incidental or consequential
damages, so the above limitations and/or exclusions may not apply to you, and further (ii) this warranty
gives you specific legal rights and you may also have other rights which vary from state to state.
Return product freight prepaid with proof of purchase date (dated sales receipt) and $5.00 to cover
postage and handling, to:
Zircon Corporation
*Attn: Returns Department
1580 Dell Avenue
Campbell, CA 95008-6992 USA
Be sure to include your name and return address. Out of warranty service and repair, where proof of
purchase is not provided, shall be returned with repairs charged C.O.D. Allow 4 to 6 weeks for delivery.
Customer Service, 1-800-245-9265 or 1-408-963-4550
Monday–Friday, 8:00 a.m. to 5:00 p.m. PST
www.zircon.com
© 2015 Zircon Corporation • P/N 67395 • Rev A 10/15
6. WORKING WITH DIFFERENT MATERIALS
Wallpaper: The MultiScanner
®
740 functions normally on walls covered with wallpaper or fabric,
unless the materials are metallic foil, contain metallic fibers, or are still wet after application.
Wallpaper may need to dry for several weeks after application.
Lath & plaster: Due to irregularities in plaster thickness, it is difficult for the MultiScanner
®
740
to locate studs in STUD SCAN mode. Change to METAL SCAN mode to locate nail heads holding
laths to stud. If plaster has metal mesh reinforcement, MultiScanner
®
740 will be unable to detect
through that material.
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. Calibrate with
cardboard in place.
Wood flooring, subflooring, or gypsum drywall over plywood sheathing: Use STUD SCAN mode
and move the tool slowly. The signal strength indicator may only display 1 or 2 bars when the tool
locates a stud through thick surfaces.
MultiScanner
®
740 cannot scan for wood studs and joists through concrete or carpeting and pad. In
problematic situations, try using METAL SCAN to locate nails or drywall screws that line up vertically
where a stud is positioned.
Note: Sensing depth and accuracy can vary due to moisture, content of materials, wall texture,
and paint. Indoor use only.
Do not rely exclusively on the detector to locate items behind the scanned
surface. Use other information sources to help locate items before
penetrating the surface. Such additional sources include construction plans, visible points
of entry of pipes and wiring into walls, such as in a basement, and in standard 16 and 24 in.
(41 and 61 cm) stud spacing practices.
7. SCANNING IN METAL MODE
Note: When scanning for metal studs, use STUD SCAN mode to quickly locate the center and edges of
wood or metal studs. Use METAL SCAN mode only to determine if studs are wood or metal. In METAL
SCAN mode, only metal drywall screws will be found in wood studs, while metal will be indicated
everywhere on a metal stud.
METAL SCAN mode has interactive calibration to adjust its sensitivity to metal which can be used
to find the precise location of metal objects in walls, floors, and ceilings. Maximum sensitivity is
ideal for quickly finding the approximate location of metal. However, the user can reduce sensitivity
by turning on the tool closer to metal. The reason for reducing sensitivity is because with less
sensitivity, the area where metal is indicated will be smaller. But in both cases, the metal target is
in the center of the area where the tool indicates metal is present.
WARNING
7. SCANNING IN METAL MODE (continued)
1. (Figure A) Press the tool flat against the wall and slowly slide the tool across the surface.
Mark the spot where the display bars peak. If it is a strong target, the SpotLite
®
Pointing
System will also shine a beam of light and a steady beep will sound. Continue in same
direction until display bars reduce. Reverse direction and mark the spot where the display
bars peak from the reversed direction. The midpoint of the two marks is the location of the
center of the metal object.
If the tool indicates metal over a large area, you can refine the scanning area to more
accurately locate the metal target.
2. (Figure B) To further pinpoint the location of the metal target, scan the area again.
Release the handle and then turn the tool back on, this time starting on the wall over
one of the previous marks. This will reset the tool to a lower sensitivity and make the
scan more precise.
3. (Figure C) Scan in both directions as in Step 1. The area indicated should
become smaller so you can more precisely identify the metal location.
This procedure can be repeated to narrow the field even further.
Note: Small targets or targets deep within the surface may only illuminate some
of the bars and not the center line or audio tone. In this case, use the highest
indication to determine the metal position.
8. SCANNING IN AC MODE
As with METAL SCAN Mode, AC SCAN Mode has interactive calibration and works in the
same manner.
1. (Figure A) Press the tool flat against the wall and slowly slide the tool across the surface.
Mark the point where you get the highest AC indication (the most bars on the screen). If it
is a strong target, the SpotLite
®
Pointing System will also shine a beam of light and a steady
beep will sound. Continue in same direction until display bars reduce. Reverse direction and
mark the spot where the display bars peak from the reversed direction. The midpoint of the
two marks is the location of the center of the live AC wiring.
If the tool indicates live electricity over a large area, you can refine the scanning area to
more accurately locate the live AC wiring by following steps 2 and 3 below.
2. (Figure B) To further pinpoint the location of the live AC wiring, scan the area again.
Release the handle and then turn the tool back on, this time starting on the wall over
one of the previous marks. This will reset the tool to a lower sensitivity and narrow the scan
area.
3. (Figure C) Scan in both directions as in Step 1. The area indicated should become
smaller so you can more precisely identify the location of live AC wires. This procedure
can be repeated to narrow the field even further.
Note: AC SCAN mode will only detect live (energized) AC wiring.
WireWarning
®
Detection
Zircon’s WireWarning
®
Detection feature works continuously in STUD, High Sensitivity, and METAL modes. When live
AC voltage is detected, the AC Alert warning icon will appear in the display. If scanning begins over a live AC wire,
the AC indicator will flash continuously.
Electrical field locators may not detect live AC wires if wires are more than 2 in. (51 mm)
from the scanned surface, in concrete, encased in conduit, present behind a plywood shear
wall or metallic wall covering, or if moisture is present in the environment or scanned surface.
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 POWER, 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.
Always turn off power when working near electrical wires.
9. MARKING THE LOCATION
Once an object is located, you can mark the location by gently pulling down the MARK button with the tip of your
finger. Pulling back the MARK button will cause a pencil point to extend from the front of the handle, placing a short
erasable line on the wall.
10. CHANGING THE MARKER TIP
Pull and hold the MARK button to fully extend the marker tip. Grasp the marker and pull it off the marker post.
To install a new marker tip, pull and hold the MARK button to fully extend the marker post. Push the new marker
onto the marker post.
Note: MultiScanner
®
740 comes with three spare marker tips. These tips are stored in a compartment located behind
the battery. Additional marker tips can be ordered from Customer Service at 1-800-245-9265.
11. REMOVING OR REPLACING THE SCANNING HEAD
MultiScanner
®
740’s scanner head may be removed from the handle to facilitate cleaning or repair. Or the scanning
head may also become separated from the handle if accidentally dropped or twisted. Follow the directions below to
replace the scanning head:
To remove the head: Place the back of the head in the palm of one hand, and grasp the body of the unit in the
other hand. Slowly and gently lift and turn the body, removing one arm from the socket at a time.
To replace the head: Align the end of the arms over the sockets and gently snap them back into their
sockets, one arm at a time.
FCC Part 15 Class B Registration Warning
This device complies with Part 15 of FCC Rules. Operation is subject to the following two conditions: (1) this device may not
cause harmful interference, and (2) this device must accept any interference received, including interference that may cause
undesired operation.
WARNING
WARNING
MultiScanner
®
740
Multifunction
Wall Scanner
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