Electric shock when disconnecting the power cable
with the main power switch in “ON” position.
Follow the following sequence:
1. Switch off the machine at the main power switch.
2. Disconnect the power cable.
2.4.2 Fire hazard
Unattended operation
Only allow unattended operation of the machine
to occur if the following conditions are met:
n
The working chamber of the machine is com-
pletely clean.
n
Unauthorized users cannot access the machine.
n
The room in which the machine is located has an
automatic fire detection system.
2.4.3 Housing
Danger of entrapment by moving housing parts
n
Working chamber door
n
Upper and lower service cover
If you move these housing parts, use only the desig-
nated grip points.
Make sure that your hands are not trapped during
movement.
2.4.4 Working chamber
Danger of crushing due to moving machine parts in
the working chamber
Only use the machine when the working chamber
door is completely closed and undamaged during
machining.
Do not circumvent or deactivate safety devices of
the machine.
Check the machine regularly for damage, espe-
cially the safety devices.
Danger of cutting and burning
Always wear gloves when performing manual work
on the machine or with blanks / tools.
Only touch tools on the shaft.
Do not touch the spindle body after machining.
2.4.5 Air extraction system
Respiratory diseases when processing harmful
materials
Always use a suitable air extraction system during
dry machining.
Use a suction unit with fine dust filter class M.
Avoid materials which damage your health.
2.4.6 Operating noise
Hearing loss and tinnitus due to regular loud
working noises
If loud working noises cannot be prevented, use an
ear protector during machining.
2.4.7 Maintenance and troubleshooting
Risk of injuries from machine malfunctions due to
inadequate or incorrect maintenance/
troubleshooting
Perform the maintenance tasks according to the
maintenance table.
Never perform any troubleshooting while the
machine is operating.
2.4.8 Spare parts, extra equipment and
accessories
Risk of injuries due to unsuitable spare parts / extra
equipment / accessories
Use only original spare parts, original extra equip-
ment and original accessories for the machine.
2.5 Material damage
2.5.1 Spindle
Damage caused by the warm-up phase being
omitted
When initially starting a machine or if it has not been
used for at least 2 weeks, you must warm the spindle
before use.
Use the warm-up process in DENTALCNC.
The DENTALCAM & DENTALCNC user Information
provides instructions on how to do this.
Damage due to poor maintenance
Clean and exchange the collet chuck according to
the maintenance table.
Damage caused by unsuitable tools
Recommendation: Only use original tools from vhf.
Use tools only within the maximum tool life shown
in DENTALCNC.
See the requirements in the chapter Technical data.
Impact damage
When working in the working chamber, do not
apply manual pressure against the spindle.
General safety instructions
EN 7
Original Operating Instructions: E5
Version: 4/27/2023
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