60 53 362 D3472
D3472.201.10.20.02 07.2016
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Sirona Dental A/S 2Safety instructions
Operating Instructions DAC UNIVERSAL 2.1Electrostatic discharge
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2
Safety instructions
2.1
Electrostatic discharge
Protective measures
Electrostatic discharge (abbreviated: ESD – ElectroStatic Discharge)
Electrostatic discharge from people can damage electronic components
when the components are touched. Damaged components usually have
to be replaced. Repairs must be performed by qualified personnel.
Measures to protect against ESD include:
● Procedures to avoid electrostatic charging via
– air conditioning
– air humidification
– conductive floor coverings
– non-synthetic clothing
● discharging the electrostatic charges from your own body through
contact with
– a metallic unit casing
– a larger metallic object
– any other metal part grounded with the protective earth
Endangered regions are indicated on the unit by the ESD warning label:
We recommend that all persons working with this system are made aware
of the significance of the ESD warning label. A training course should also
be held to inform users about the physics of electrostatic charges.
Physics of electrostatic charges
An electrostatic discharge requires prior electrostatic charging.
There is a danger of electrostatic charges building up whenever two
bodies rub against each other, e.g. when:
● walking (soles of shoes against the floor) or
● moving (chair casters against floor).
The amount of charge depends on several factors: The charge is:
● higher at low air humidity than at high air humidity, and
● higher with synthetic materials than with natural materials (clothing,
floor coverings).
The following rule of thumb can be applied to assess the transient
voltages resulting from an electrostatic discharge.
IMPORTANT
This product is intended for use by qualified healthcare professionals
only. Before operating the DAC UNIVERSAL, carefully read and follow
these instructions and save them for future reference. Observe all
cautions.
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