Operation: Preparing jobs

1. Ensure that the machine is properly installed.
2. Switch on the machine at the main power switch.
3. Machines with internal CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC.: Press the start button.
4. Machines with external CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC.: Start the CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC..
• The machine indicates on the touchscreen that it is starting up.


 

5. Wait until the machine has started up. This usually takes up to 2 minutes, but can take significantly longer in case of a Windows® update.
• The following happens:
1. The touchscreen indicates that the internal CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC. is connecting to the touchscreen.


 

2. After a few seconds, the connection is established.
3. The machine references.
4. The working chamber is illuminated in white.

The machine will not reference if the working chamber door is open.

6. If the working chamber door is open, confirm the respective dialog on the touchscreen to close the door.
• After the machine has referenced, the Home section displays on the touchscreen.


 

If the touchscreen displays that there is a tool in the collet chuck which needs to be removed:  Starting the machine with a tool in the collet chuck

Under some circumstances like a power failure, there can be a tool in the collet chuck of the spindle when you start the machine.

1. Start the machine.
• The touchscreen displays that there is a tool in the collet chuck. The working chamber door opens.

2. CAUTION!Wear gloves.

3. Hold the tool in the collet chuck in place.



 

4. Confirm the current message.
• The collet chuck opens.
5. Remove the tool from the collet chuck.

   

    

6. Confirm the current message.
• The working chamber door closes. The machine is ready for operation.

If you use the STL workflow or the 3Shape Produce workflow, you must use ChairsideCAM / DentalCAM on the CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC..

1. Start up the CAD computer.

2. Access the CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC. of the Z4 with the CAD computer.

    Accessing the CAM computer

3. Switch to DentalCAM.

Information on working with DentalCAM:

 

You can shut down the machine when it is not processing.

1. Insert a block into the blank holder.
2. Select the depicted icon in the Home section of the touchscreen.
• If the maintenance interval for software updates has been exceeded, the machine will ask you whether you want to search for updates.
3. If you want to switch off the machine without updating, select .

   If you want to search for software updates, read the following chapter first:  Updating the software and firmware

• The machine shuts down.
4. Wait until the touchscreen is switched off and the machine has completely shut down. Restart information:  Starting the machine
5. (Optional) Switch off the machine at the main power switch.
• The machine is no longer powered. Restart information:  Starting the machine

If there is no connection to the CAM computer

If the connection to DentalCNC on the CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC. gets lost or cannot be established at startup, the touchscreen displays the following image:

The connection to DentalCNC may fail for the following reasons:

• The start of DentalCNC is delayed because of Windows® updates.
• The CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC. encountered a hardware / software problem.
• The CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC. is not correctly configured.

To (re-)establish the connection, you can do the following:

1. Try to access the CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC. via a remote desktop connection.  Installing the machine
2. If you cannot establish a remote desktop connection, access the CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC. by connecting additional hardware to it.  Installing the machine
3. Check if Windows® is installing updates. In this case, wait until the updates have been installed.
4. If DentalCNC is no longer running properly, restart Windows®.
• DentalCNC should automatically launch shortly after Windows® startup and establish the connection to the machine.
5. If Windows® is no longer running properly, do the following:
1. Machines with internal CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC.: Switch off the machine at the main power switch.
2. Machines with external CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC.: Switch off the CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC..
3. Wait 10 seconds.

4. Machines with internal CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC.: Switch on the machine at the main power switch.Press the start button.

5. Machines with external CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC.: Switch on the CAM computer The computer that is connected to your machine and which runs DentalCAM and DentalCNC..
6. If Windows® and DentalCNC seem to be running fine, check if the network configuration and CAD/CAM integration are set up according to the installation instructions.  Installing the machine
7. If the problem persists, contact customer service.

• To open or close the working chamber door, select the upper arrow of the depicted icon on the touchscreen.



 

1. To unlock the multi-purpose drawer, select the lower arrow of the depicted icon in the Home section of the touchscreen.
• After a couple of seconds, the drawer will move slightly forward.
2. Pull the drawer open.


 

3. To close the multi-purpose drawer, push it until it locks back in place.
• You will hear a clicking sound.

With the touchscreen, you can operate the main functions of the machine:

• Controlling basic machine functions
• Managing and executing jobs
• Viewing the progress of the current job
• Managing tools
• Handling maintenance tasks

User interface on the touchscreen

The user interface is divided into the 3 main sections Home, Jobs and Tools which you can select via a menu at the right display border.

• To open the Home section, select the depicted icon.
• To open the Jobs section, select the depicted icon.
• To open the Tools section, select the depicted icon.

The Home section of the user interface

The Home section has 2 modes which display depending on whether the machine is processing or not.

Mode 1 displays when the machine is not processing:

Mode 2 displays during processing:

The Jobs section of the user interface

In the Jobs section, you can view details of the available jobs. You can use this view to prepare and start machining. You can delete jobs that you do not need anymore.

The Tools section of the user interface

The machine needs cooling liquid that meets the following requirements:

• Drinking water
• No added chlorine
• No distilled water
• No carbonated water

Without sufficient cooling liquid in the tank, wet machining is not possible. You will find the appropriate intervals in the maintenance table. Of course, you can exchange the cooling liquid at any time.

You need to exchange the cooling liquid in the following cases:

• The liquid level lies below the min mark.
• The change interval in the maintenance table has been exceeded.
• The cooling liquid is soiled.
• In case of a strong odor from or a biofilm on the cooling liquid.
• If you use a cooling lubricant: The pH value is below 9.

Every time you exchange the cooling liquid, you must also clean the tank.

Before every job, you also have to check the strainer basket and empty it if required.

Cooling lubricant

When machining titanium blanks:

• In order to achieve longer service life values, you can add the cooling lubricant Tec Liquid Pro to the cooling liquid. The mixing ratio is indicated on the bottle label. Determine the pH value of the cooling liquid.  Determine the pH value of the cooling liquid

Tec Liquid Pro is available from customer service.

Determine the pH value of the cooling liquid

If you added cooling lubricant to the cooling liquid, you need to check the pH value of the cooling liquid to determine whether you need to exchange it.

• Determine the pH value of the cooling liquid directly after adding the cooling lubricant and when you didn’t use the machine for 2 days.
• To determine the pH value of the cooling liquid with test strips, do the following:

1. Hold one test strip into the cooling liquid for a few seconds.
2. Compare the colors on the test strip with the indications on the container of the pH test strips.
• The colors on the test strip match the pH value 9 on the container.

• If the pH value is below 9 or if the change interval in the maintenance table has been exceeded, exchange the cooling liquid.

Emptying the strainer basket

You can empty the strainer basket into a collecting container as follows:

1. Lift the cover, including the strainer basket, off the cooling liquid tank.

2. Remove the strainer basket by pushing it out of the cover from below.

3. Clean the strainer basket:

   1. Tap out the strainer basket into the collecting container.

   2. While rinsing the strainer basket under running water, clean it thoroughly with the cleaning brush.

Exchanging or topping up the cooling liquid

You can fill in or exchange the cooling liquid as follows:

1. Have ready:

• Collecting container that can hold approx. 10 l

• Cleaning brush

• Water for cleaning the cooling liquid tank

• Small cleaning brush

• Carbon pellets and spare fine filter (optional)

• A mild cleaning agent (optional)

2. Make sure that sufficient cooling liquid is available.

3. Close the working chamber door.
4. Open the multi-purpose drawer.
5. Grab the cooling liquid tank at the positions marked in the following figure. Pull it out of the drawer in the direction indicated by the arrow.

When you tilt the cooling liquid tank, the cover will not prevent the cooling liquid from leaking.



Removing the cooling liquid tank from the multi-purpose drawer

Information on the disposal of cooling liquid and machining residues: Disposal

6. Lift the cover, including the strainer basket, off the cooling liquid tank.



Removing the cover from the cooling liquid tank

7. If there is cooling liquid in the tank:

1. Empty the contents of the cooling liquid tank container into the collecting container.

2. Remove the strainer basket by pushing it out of the cover from below.

3. Clean the strainer basket:

   1. Tap out the strainer basket into the collecting container.

   2. While rinsing the strainer basket under running water, clean it thoroughly with the cleaning brush.

4. If you want to clean the cooling liquid tank in the dishwasher, do the following:

   1. Make sure that the all disposal regulations for machining residues are always complied with.

   2. Select a cleaning program with a maximum temperature of 70 °C.

5. If you want to clean the cooling liquid tank manually, do the following:

   1. Thoroughly clean the cooling liquid tank with the cleaning brush.

   2. Pour the cleaning water into the collecting container.

   3. If you have used a cleaner, make sure that there is no residue of it in the cooling liquid tank.

• The cooling liquid tank is completely void of liquid, machining and cleaner residues.

8. Fill the cooling liquid tank with cooling liquid until it reaches the max mark.

9. When machining titanium blanks: In order to achieve longer service life values, you can add the cooling lubricant Tec Liquid Pro to the cooling liquid. The mixing ratio is indicated on the bottle label. Determine the pH value of the cooling liquid.  Determine the pH value of the cooling liquid

10. Insert the strainer basket into the tank cover and put the cover onto the tank.

11. Remove dirt and foreign bodies from the coupling of the cooling liquid tank and the counterpart in the machine.



The coupling of the tank and its counterpart (colored green)

12. Insert the cooling liquid tank with the help of the guide rail into the multi-purpose drawer.


Inserting the cooling liquid tank into the drawer (guide rail colored orange)

13. Push the cooling liquid tank into its end position until it is properly attached to the machine.
• The cooling liquid tank is connected to the cooling liquid system via the coupling.
14. Close the multi-purpose drawer.

We recommend original tools as they are designed especially for the designated jobs.

The machine uses exchangeable tool magazines that can hold up to 6 tools each.

For each job, you need to insert the appropriate magazine into the working chamber.

You can store magazines that are currently not needed in the multi-purpose drawer.

A sensor recognizes the tool magazine which is currently mounted into the working chamber. The touchscreen displays the required magazine for each job and whether it is mounted into the working chamber.

The machine can change tools automatically during machining, thus it executes jobs without your intervention.

Color codes of the tool magazines

The tool magazines have color codes for the individual materials. In the following table you find an overview:

Color code	Material	Letter
Green	Wax and plastics (PMMA)	P
Yellow	Composites	C
Blue	Zirconia	Z
Red	Non-precious metals (Cobalt chrome / Titanium)	M
White	Glass ceramics	G

Inserting and exchanging tools

You need to insert or exchange tools in the following cases:

• Upon first use of the machine
• After replacing a tool magazine (in case of loss or damage)
• After exchanging tool magazine inserts due to wear
• When the tool life of a tool has expired
• When tools are damaged or worn

You can use the Tools section of the touchscreen for managing tools:

• To check the tool life values.
• To check which tool magazine positions the individual tools are assigned to.

1. To open the Tools section, select the depicted icon.
• The Jobs section displays. 1 magazine has been selected and the corresponding tools are displayed.

 
1. Color code of the currently selected tool magazine
2. Tool with expired tool life (red circle)
3. Tool life value indicator (blue outer circle)
4. Menu for selecting the tool magazine
5. Marking for the tool magazine currently inserted in the working chamber
6. Marking for the tool magazine currently shown on the touchscreen
2. Select the desired tool magazine from the menu at the bottom display border.
• The tools of the corresponding tool magazine display as circles.
  1. The tool match codes are displayed in the middle of each circle.
  2. Tools with expired tool life values display in red.
  3. Each circle is assigned to a specific position of the corresponding magazine.


Top: Tool positions 1 – 6 in the tool magazine
Bottom: Tool positions 1 – 6 on the touchscreen

3. If tool life values have expired, remove the corresponding tools from the tool magazine.
4. Insert the new tools:
1. Ensure that the positions of the tools in the tool magazine match the tool positions on the touchscreen.
2. Insert the tools in the tool positions with the edge facing downward. Push them in until the ring touches the rubber.

If the positions of the tools in the tool magazine do not match the tool positions on the touchscreen, the machine will use the wrong tool(s) during job execution and the job result will become unusable.



Inserting tools into the tool positions

5. After replacing a tool, reset the tool life value. For this, select the corresponding icon on the touchscreen.
6. Plug the tool magazine back onto the tool magazine holder if required.


Resetting the tool life values

• The tool life value of the tool is reset. The circle displays in blue.

You exchange tool magazines by pulling them off and plugging them on the tool magazine holder.

In case a tool magazine gets stuck on the holder, use the screw on the backside of the tool magazine to loosen it.

1. Pick up a flat blunt tool (e.g. a slot screwdriver).
2. Use the tool to remove the protective cap on the screw and put it aside within reach.
3. Using the provided Allen key, turn the screw clockwise.
• The tool magazine moves backwards and is released.


 

4. Remove the tool magazine from the working chamber.
5. Reset the screw to its original state:
1. Using the provided Allen key, turn the screw counterclockwise into its original position.
2. Cover the opening with the protective cap.
• The screw is reset and the tool magazine is ready to be mounted again.


 

You can use the touchscreen to choose the right tool magazine for the next job:

1. To open the Jobs section, select the depicted icon.
• The Jobs section displays. The details of the next queued job display.
2. If necessary, switch to the desired job by using the left and right arrow in the left bottom corner of the touchscreen.


 

• The touchscreen displays the required tool magazine and if it is mounted into the working chamber.

The tool magazine details in the Jobs section
1. Check box indicating whether the required tool magazine is mounted:

   means not mounted

   means mounted

2. The color code and letter of the required tool magazine.  Color codes of the tool magazines
3. If an incorrect tool magazine is mounted, remove this magazine by pulling it off the tool magazine holder (See this figure, blue arrow).
4. To mount the required tool magazine, identify it by comparing the color code:


The color code on the touchscreen (left) and on the tool magazine are identical

5. Ensure that the contact surfaces of the tool magazine holder and the tool magazine are clean.

You can only execute jobs when the machine recognizes the required tool magazine.

6. Plug the tool magazine onto the tool magazine holder (See this figure, green arrow).

The 2 holes in a tool magazine
1. Larger front drilling
2. Smaller rear drilling


Plugging a tool magazine onto the tool magazine holder in 3 steps

1. Position the larger rear drilling on the longer pin of the tool magazine holder. Push it onto the bolt until you feel a resistance.
2. Overcome the resistance by pushing the tool magazine harder onto the bolt.
3. Align the smaller front drilling with the shorter pin of the tool magazine holder. Push the tool magazine onto the short bolt until it is properly seated on the tool magazine holder.

The machine can process the following blanks:

• Blocks, max. size: 45 x 20 x 20 mm (L/D/H)
• Prefabricated abutments*

*requires extra equipment Physical component which must be obtained separately and which adds new functionality to your machine.

Extra equipment Physical component which must be obtained separately and which adds new functionality to your machine. can be obtained from your customer service provider.

Mounting and removing blocks

You can mount blocks to the block holder where a collet chuck immobilizes them. The collet chuck opens and closes with the working chamber door.

1. Open the working chamber door.
• The working chamber door is open. The collet chuck is open.
2. Pull the block out of the holder if any.
3. Check the collet chuck for dirt.
4. If necessary, clean the collet chuck.  Cleaning the collet chuck of the blank holder
5. Insert the required block into the collet chuck of the block holder: Align the groove [1] of the block with the positioning pin [2] of the block holder.

Inserting the block into the block holder (groove and positioning pin marked orange)
1. Groove of the block
2. Positioning pin of the block
6. Push the block into the block holder until it snaps into place. If the block does not snap into place, twist it until the positioning pin lies in the groove.


(a) Block has only partial contact; (b) Base surface of block has full contact

7. Close the working chamber door.
• The working chamber door is closed. The collet chuck is closed. The block is mounted.