VHF Z4 - How to proceed in case of a job interruption; How to proceed in case of a machine malfunction; How to proceed in case of a tool breakage; How to proceed in case of a power failure

How to proceed in case of a job inter-
ruption
If the job was interrupted, the touchscreen displays a
corresponding message.
If the compressed air is insufficient
1.
Wait a couple of seconds. This may already solve
the problem.
2.
Restart the machine.
3.
If the problem persists, contact customer service.
If the cooling liquid flow rate is insufficient
1.
Check if there is enough cooling liquid in the
tank.
2.
Check if the cooling liquid and the tank including
the filter are clean.
How to proceed in case of a machine mal-
function
A machine malfunction is recognized by the internal
control unit in case of a critical event. The working
chamber will be illuminated in red. The touchscreen
displays the error message and error code that was
sent by the control unit.
1.
Record the error message and error code that is
displayed.
2.
Restart the machine and the CAM computer. If
the problem persists, continue with the next
step.
3.
Disconnect the machine from the electrical
source and prevent it from being restarted.
4.
Contact customer service. Have the error mes-
sage and error code readily available.
5.
If you need to remove a blank from the working
chamber, perform an emergency opening of the
working chamber door.
How to proceed in case of a tool break-
age
If a tool breaks during machining, the machine will not
recognize this immediately. Instead, the spindle will
continue to move with the broken tool. The tool
breakage will be recognized upon the following
events:
n
The next regular tool change
n
The next check for broken tools, if activated in
the application settings of DentalCNC.
A tool breakage can be caused by the following:
n
The tool was damaged or worn
n
The tool was put into the wrong tool magazine
position or was manually inserted into the
spindle at the wrong time. As a consequence, it
was not suitable for the processing step.
n
The distribution of the objects in the blank
(“nesting”) was not correct.
If a tool breaks, do the following:
1.
Open the working chamber door.
2.
Remove all parts of the broken tool from the work-
ing chamber and the collet chuck.
3.
If the spindle picked up the tool from the tool
magazine, check if the tool was inserted into the
correct position. Insert a spare tool into the cor-
rect position in the tool magazine.
4.
If you manually inserted the tool into the collet
chuck, check if the broken tool corresponds to
the tool type which you were prompted to insert.
Have a correct spare tool ready.
5.
Close the working chamber door.Restart the job.
You need to restart the job with a new blank.
You cannot continue the job with the used
blank because the machine will not recognize
this blank and you will receive an error
message.
If tools break regularly, you can find additional
information in the troubleshooting section:
Ž
Troubleshooting
– on page72
How to proceed in case of a power failure
As long as the machine is not powered, you do not
have access to the working chamber. You also have no
access to the drawer.
After a short power failure, restart the machine
and the CAM computer.
If you need to access the working chamber in case
of a longer power failure, perform an emergency
opening of the working chamber door.
If you need to access to the multi-purpose drawer,
perform an emergency opening of the drawer.
Original Operating Instructions:Z4
Version: 12/5/2018
Z4 – Operation: Executing jobs
EN 50