Merit Link International AG CT32072DH Diamond Core Drill

Technical Data

Declaration of Conformity

The power tool described in the section "Technical power tool specifications" complies with all relevant provisions of Directives 2006/42/EC, including their amendments, as well as the following standards:

• EN 62841-1:2015
• EN 62841-2-1:2018
• EN 55014-1:2017
• EN 55014-2:2015
• EN 61000-3-2:2014
• EN 61000-3-3:2013

Certification Manager: Wu Cunzhen

Location: Merit Link International AG, Stabio, Switzerland

Date: 09/27/2019

Safety Instructions

1. Safety of the Work Area

• Keep the work area clean and well lit.
• When drilling through the overlap with a diamond crown, take care of the safety of people and the work area on the opposite side, as core loss is possible.

2. Electrical Safety

• Before starting work, check the voltage in the power supply. A voltage over 220-230 volts can lead to irreparable damage to the drill.
• To avoid voltage fluctuations when working with a drill from a generator, use a voltage stabilizer; otherwise, it may cause the drill to fail.
• Do not allow water to enter the power tool; do not store it in damp rooms.
• When working with power tools outdoors, use a moisture-proof extension cord.

3. Personal Safety

• Be vigilant and attentive when working with a drill.
• It is recommended to use personal protective equipment during operation, such as a dust mask, safety glasses, hearing protection, anti-vibration gloves, etc.
• Wear protective headphones during impact drilling. Exposure to noise can lead to hearing loss.
• Before connecting the power tool to a power source, ensure the power button is not fixed and is in the off position.
• Use the auxiliary handles supplied with the tool. Loss of control can cause injury. The built-in safety clutch is triggered only in case of jerky jamming. Always work with an additional handle.
• Attention! In case of intensive use, it is recommended to replace the safety clutch once every six months.
• For efficient and safe operation, use a vacuum cleaner and dust removal accessories.

4. Safety Measures When Working With a Diamond Drilling Drill

• If performing work where the cutting tool can hook hidden wiring or its own cable, hold the tool by specially designed insulated surfaces to protect from electric shock.
• Do not use a drill with a damaged switch. A power tool that cannot be turned on and off with its own switch is dangerous and requires repair.
• If the tool being used is blocked, turn off the device immediately! Do not turn on the device until the tool being used is unlocked, otherwise a high-torque recoil may occur. Identify and eliminate the reason for blocking the tool, considering safety instructions. Possible causes include:
  • Skewing of the workpiece
  • Destruction of the material
  • Overload of the power tool

Do not touch the machine when it is running. The tool may heat up during application.

Attention! It is forbidden to process materials that may be harmful to health (e.g., asbestos).

Keep the power cord out of the working area of the tool. Always run the cable behind your back.

When working in walls, ceilings, or floors, ensure not to damage electrical cables or water pipes.

Fix your workpiece with a clamping device. Unfixed workpieces can lead to serious injury and damage.

Always unplug the plug from the outlet before performing any maintenance work on the tool.

When working with large diameters, the additional handle must be fixed at right angles to the main one (see illustration).

Specified Conditions of Use

The diamond drill is used for dry drilling with diamond crowns. With the chuck installed, it can be used for impact drilling holes in stone, as well as drilling wood and steel. The drill is not designed for wet drilling holes.

Main Connection

Electrical appliances used in many different places, including outdoors, must be connected through a device that prevents a sharp increase in voltage (FI, RCD, PRCD). Connect only to a single-phase AC mains with a voltage corresponding to the one indicated on the instrument. The power tool has a second class of protection, which allows it to be connected to power outlets without a grounding terminal. Before plugging the plug into the outlet, make sure that the machine is turned off.

Operation Tips

Depending on the material, the use of a micro-percussion mode can significantly reduce the drilling time or increase the service life of the diamond crown.

Working Instructions

For faster drilling, remove the center drill bit, drilling to a depth of 10-15 mm. Insert the crown into the drilled groove and drill evenly.

Large holes that do not require precise positioning can be drilled without a center drill. To do this, place the crown at an angle and slowly move the tool forward when you pass a depth of about 5 mm. (This is only possible with short crowns!)

When the core breaks off (loosens), remove the crown from the material and remove the core.

For best performance, the diamond segments should be "roughened" so that diamond fragments protrude: to do this, rub the surface of the segments with a stone.

Maintenance

Always keep the cooling holes clean and do not block them with your hand.

If the tool will be used with a chuck, mainly for impact drilling, regularly remove accumulated dust in the chuck.

If the network connection cable is damaged, it must be replaced at an authorized service center, as this requires a special tool.

Use CROWN accessories and spare parts only.

If there is a need for a replacement that has not been described, please contact an authorized service center. (The current list can be viewed on the website of the representative office in your country).

Diagram Descriptions

Diagram illustrating the operational sequence with START/STOP controls and numbered steps 1-6.

Diagram showing speed selection controls, indicating Speed 1 and Speed 2.

Diagram showing the sequence of starting and stopping the tool, with indicators for speed 1 and 2.

Diagram showing two connection points or indicators, labeled 1 and 2.

Important Note: ⚠️ Switch only when the engine is stopped.