alza cz MD-5090 Metal Detector Underground User Manual

June 6, 2024
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alza cz MD-5090 Metal Detector Underground

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
✆ +44 (0)203 514 4411
Importer Alza.cz a.s., Jankovcova 1522/53, Holešovice, 170 00 Praha 7, www.alza.cz

Features

With your metal detector, you can hunt for coins, relics, jewelry, 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 – This 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 the speaker and headphones. Earphone Jack – lets you connect headphones (not supplied) to the detector. View Meter and Pointer – The meter pointer swings to the right if the metal is found. Waterproof Search Coil – lets you use the detector even if you must ut it underwater. NOTE: The search coil is waterproof, but the control housing is not. Adjustable Shaft – Let’s you adjust the detector’s length. Operates on two 9V alkaline batteries (not supplied).

Parts of the detector

alza cz MD-5090 Metal Detector Underground - Parts of the
detector

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.
    Locknut
    alza cz MD-5090 Metal Detector Underground - Lock nut

  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.alza cz MD-5090 Metal Detector Underground - Fixing Screw

  4. Tighten the fixing screw.

  5. Insert the search coil cable plug into the five-pin jack on the front control box’s housing.

  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.

Install ling 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.

CAUTIONS:

  • Use only fresh alkaline batteries of the required size.
  • Do not mix the old and new batteries or 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 the 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.

alza cz MD-5090 Metal Detector Underground - EAR JACK

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 to 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.

Functions and indicators

alza cz MD-5090 Metal Detector Underground - Functions and
indicators

  • DISC – Rotate the control clockwise away from ALL METAL to get DISC mode. The DISC model comes with an 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 a higher level or to get a lower volume level by rotating it counter-clockwise.
  • LOW BATT – Low battery indicator. When the LOW BATT indicator lights, the user should replace the batteries at once.
  • EAR – 3.5mm headphone jack for connecting headphones.
  • VIEW METER – When the unit finds any metal target, the meter pointer swings to the right.

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 the 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 sound a 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 at the clockwise end most of the metal is rejected except silver (25, 50, $1.

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.
    CORRECTalza cz MD-5090 Metal Detector Underground -
CORRECT WRONGalza cz MD-5090
Metal Detector Underground - 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.

alza cz MD-5090 Metal Detector Underground - sweep

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.
  • Electromagnetic and electrical interference surrounding the target.
    In areas of highly mineralized ground or wet sand, the detector will sound even if 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 areas 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 to place them a little far away.

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.

Code of Ethics for Treasure HunterS

Remember that every treasure hunter should follow these ten commandments:

  1. Before you search, make sure that the search site for the place where you want to search is not restricted by any laws or regulations. If so, respect them.
  2. Do not damage nature, sown fields, roads, or trees, do not start a fire in the forest.
  3. Backfill the pits that you will dig so that after the first rain it is not known at the place has been dug in.
  4. Take everything you dig out. Do not leave cans, pipes, wires, and other debris in the woods.
  5. Be quiet and considerate. Best so that no one knows about you. Do not spread piles of leaves or sticks in the forest.
  6. Be careful – try to see and not be seen. Not all forest visitors have good intentions.
  7. Do not drive to the forest, leave the car in a safe place, and walk to the site.
  8. Do not enter reservations and other places where it is prohibited.
  9.  Do not disturb the animals unnecessarily.
  10. Report important findings as required by law. A
    Alza.CZ is not responsible for the use of the device in conditions that are in conflict with local laws.

Warranty Conditions

A new product was purchased in the Alza.CZ sales network is guaranteed for 2 years. If you need repair or other services during the warranty period, contact the product seller directly, you must provide the original proof of purchase with the date of purchase. The following are considered to be a conflict with the warranty conditions, for which the  claimed claim may not be recognized:

  • Using the product for any purpose other than that for which the product is intended or failing to follow the instructions for maintenance, operation, and service of the product.
    • Damage to the product by a natural disaster, the intervention of an unauthorized person, or mechanically through the fault of the buyer (e.g. during transport, cleaning
    by inappropriate means, etc.).
    • Natural wear and aging of consumables or components during use (such as batteries, etc.).
    • Exposure to adverse external influences, such as sunlight and other radiation or electromagnetic fields, fluid intrusion, object intrusion, mains overvoltage, electrostatic discharge voltage (including lightning), faulty supply or input voltage and inappropriate polarity of this voltage, chemical processes such as used power supplies, etc.
    • If anyone has made modifications, modifications, alterations to the design, or adaptation to change or extend the functions of the product compared to the purchased design or use of non-original components.

WEEK

This product must not be disposed of as normal household waste in accordance with the EU Directive on Waste Electrical and Electronic Equipment (WEEE – 2012/19 /  EU). Instead, it shall be returned to the place of purchase or handed over to a public collection point for the recyclable waste. By ensuring this product is disposed of correctly,  you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product.  Contact your local authority or the nearest collection point for further details. Improper disposal of this type of waste may result in fines in accordance with national regulations.

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