ALZA MD-5090 User manual

MD-5090
User Manual • Uživatelský manuál •
Užívateľský manuál • Használati utasítás •
Benutzerhandbuch

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Dear customer,
Thank you for purchasing our product. Please read the following instructions carefully
before first use and keep this user manual for future reference. Pay particular attention
to the safety instructions. If you have any questions or comments about the device,
please contact the customer line.
✉www.alza.co.uk/kontakt
✆[phone]
Importer Alza.cz a.s., Jankovcova 1522/53, Holešovice, 170 00 Praha 7, www.alza.cz

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Features
With your metal detector, you can hunt for coins, relics, jewellery, gold, and silver just
about anywhere. This metal detector is versatile and easy to use.
Features include:
Two operation Modes: All metal, Disc.
ALL METAL – Lets you search for all different types of metal with audio ground balance
and high sensitivity. It is the best operation mode.
DISC – discriminates what kind of metal is being detected.
Volume – To adjust the volume level of speaker and headphone.
Earphone Jack – lets you connect headphones (not supplied) to the detector.
View Meter and Pointer – The meter pointer swings to the right if metal is found.
Waterproof Search Coil – lets you use the detector even if you must put it under water.
NOTE: The search coil is waterproof, but the control housing is not.
Adjustable Shaft – Lets you adjust the detector’s length.
Operates on two 9V alkaline batteries (not supplied).
Parts of the detector
Control Box
Arm Rest
Adjustable
Stem with
Cable
Search Coil

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Preparation
Assembling the detector
Assembling your detector is easy and requires no special tools. Just follow these steps.
1) Unscrew the fixing knob on the search coil and remove the knobs and the connector.
Insert the smaller stem and align the holes on the search coil bracket and the stem.
Push the connector through the holes and tighten the knob.
2) Loosen the stem’s lock nut (connected with the handle) in the direction of the arrow.
Then insert the smaller stem into the big stem connected with the handle. Turn the
stem’s lock nut in the reserve direction of the arrow to lock it in place.
3) Insert the latch on the top of the handle into the assembly hole on the bottom of the
control box. Then slightly push the control box in the direction of IN marked on the
handle to fix the latch in place.
4) Tighten the fixing screw.
5) Insert the search coil cable plug into the five-pin jack on the front control box’s
housing.
Fixing Screw
Latch
Control Box
Assembly Hole
Lock nut

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6) Lengthen or shorten the stem, so when you stand upright with the detector in your
hand, the search coil is level with and about 5-2 inches / 1-5 cm above the ground. After
that tighten the lock nut.
CAUTION:
•The search coil’s plug fits into the connector only one way. Do not force the plug
or you could damage it.
•Do not disassemble the stem lock nut. In case you disassemble it, place the
washer on the top of the stem connected with the handle with the small head of
the washer upwards. Then hitch the stem lock nut on the washer then tighten it
to lock it in place.
Adjusting the search coil
Loosen the knobs at the search coil’s end, adjust the search coil to the desired angle.
(The search coil should be parallel with the ground.) Tighten the knobs just enough to
keep the search coil from rotating or wobbling.
Installing batteries
1) Turn off the power before installing the batteries.
2) Press on the battery compartment cover and slide the cover off in the direction of the
arrow.
3) Connect the battery with the battery connector taking care of the polarity. Then put
the battery into the compartment.
4) Replace the cover.

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CAUTIONS:
•Use only fresh alkaline batteries of required size.
•Do not mix the old and new batteries of different types of batteries.
•Do not mix alkaline, standard (carbon-zinc), or rechargeable (nickel-cadmium)
batteries.
•If you do not plan to use the unit for a long time, remove the batteries. Batteries
can leak chemicals that can destroy electronic parts.
You can extend battery life by using earphones, which require less power than the built-
in speakers.
Using Headphones
You can connect a pair of headphones (not supplied) to the detector so you can listen
privately. Using earphones also saves battery power and makes it easier to identify
subtle changes in sound you hear, for better detection results.
To connect earphones to the detector, insert the earphone’s 3.5mm plug into the EAR
jack on the control panel.
NOTE: The detector’s internal speaker disconnects when you connect earphones.
LISTENING SAFETY:
•To protect your hearing, set the volume to the lowest setting before you begin
listening, adjust the volume to a comfortable level.
•Do not listen at extremely high volume levels. Extended high volume listening can
lead to permanent hearing loss.
•Once you set the volume, do not increase it. Over time, your ears adapt to the
volume level, so a volume level that does not cause discomfort might still damage
your hearing.
•Do not wear headphones while operating your detector near high-traffic areas.
Pay attention to traffic safety.
EAR

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Functions and indicators
•DISC – Rotate the control clockwise away from ALL METAL to get DISC mode. The
DISC mode comes with auto ground balance. Rotate the control slowly and
clockwise t eliminate different trash objects. Rotate the control counter-clockwise
to the end to get ALL METAL mode. ALL METAL also comes with auto ground
balance. It is used to find only ferrous metal, but also non-ferrous one (see more
details below).
•SENS – Rotate the control counter-clockwise to the end to power off the unit.
Rotate the control clockwise to power on the unit. Continue rotating it clockwise
to get higher sensitivity.
•VOLUME – Rotate the control clockwise to get higher level or to get lower volume
level by rotating it counter-clockwise.
•LOW BATT – Low battery indicator. When LOW BATT indicator lights, user should
replace the batteries at once.
•EAR – 3.5mm headphone jack for connecting headphones.
•VIEW METER – When unit finds any metal target, the meter pointer swings to the
right.
Sens
Volume
Disc
Low BATT
Ear
View Meter

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Testing and using the detector
This metal detector has two operation modes: ALL METAL & DISC.
ALL METAL – is used to find all kinds of metal targets.
DISC – is used to discriminate the metal type.
Set the operation mode to ALL METAL, DISC to counter-clockwise end, SENS to high
position. Then hold the search coil parallel with the ground about 5-2 inches / 1-5cm
above the surface. Sweep the search coil from side to side in an arc line of 2.75 inches /
7cm motion.
When the detector detects a buried target, it sound a tone. Make a visual note of exact
spot on the ground where the detector beeps. Then stop the search coil directly over
this point on the ground. Move the search coil straight forward away from you and
straight back towards you a couple of times.
Meantime slowly rotate the DISC control clockwise away from ALL METAL until the unit
does not sound or sounds short tone. You can identify what kind of metal is detected
according to the setting position of DISC.
A reference for you to know what kind of metal is rejected depending on the DISC
setting.
Setting of DISC
Metal Rejected
Near 11:00
Iron
Near 12:00
Nickel coin (5 ), pull tab
Near 13:00
Zinc coin (1 87 version)
Near 15:00
Copper coin (1 76 version)
When the DISC control is set the clockwise end most of metal is rejected except silver (25
, 50 , $1.

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Search coil Sweeping Hints:
•Never sweep the search coil as if were a pendulum. Raising the search coil while
sweeping or at the end of a sweep will cause false readings.
CORRECT WRONG
•Sweep slowly, hurrying will cause you to miss targets.
•It is better you sweep the search coil from side to side on an arc line of 3 inches
motion and keep the search coil parallel with the ground.
Factors That Affect the Detecting
It is difficult to have an accurate detecting result. Sometimes the detecting may be
restricted by some factors.
•The angle of the target buried in the soil.
•The depth of the target.
•The level of oxidization of the target.
•The size of the target.
•Electro-magnetic and electrical interference surrounding the target.
In area of highly mineralized ground or wet sand, the detector will sound even uf there
is no metal. In this case, you can lower the sensitivity or increase the DISC number.
Meantime enhance the distance between the search coil and the ground.
In area with trashy metal, you can set DISC numeric value to 50. In this case most nails
and small pieces of iron will be eliminated.
Metallic digging tolls will also affect the detection of they are near the search coil. So it is
better place them a little far away.

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Care and maintenance
Your metal detector is an example of superior design and Craftsmanship. The following
suggestions will help you care for your metal detector so you can enjoy it for years.
Handle the detector gently and carefully. Dropping it can damage
circuit boards and cases and can cause the detector to work
improperly.
Use the detector only in normal temperature environments.
Temperature extremes can shorten the life of electronic devices
damage the cases of the detector.
Wipe the detector with a damp cloth occasionally to keep it looking
new. Do not use harsh chemicals, cleaning solvents, or strong
detergents to clean the detector.
Keep the detector away from dust and dirt, which can cause premature
wear of parts.