2. Safety
2.1
Intended Use
EN
This device is designed to extract dry, non-explosive dust.
This device is intended solely for commercial use in a dental laboratory.
The intended use also includes compliance with the instructions specified by the manufacturer concerning
operation, servicing and maintenance.
2.2
Improper Use
Fire promoting, easily flammable or explosive materials must not be extracted with the Silent V4.
The extraction of liquids, smoldering or burning materials is prohibited.
This device is not intended for private, household use.
Any use other than specified in these instructions is deemed improper and constitutes a misuse of the
device. The manufacturer shall not be liable for damages caused by improper use.
Only spare parts and accessories supplied or authorized by Renfert GmbH may be used with this prod-
uct. If other spare parts or accessories are used, this could have a detrimental effect on the safety of the
device, increase the risk of serious injury and lead to damage to the environment or the device itself.
2.3
Ambient Conditions for Safe Operation
The device may only be operated:
• Indoors
• Up to an altitude of 2,000 m above sea level,
• At an ambient temperature of between 5 - 40 ºC [41 - 104 ºF] *),
• At a maximum relative humidity of 80 % at 31 ºC [87.8 ºF], dropping to a linear of up to 50 %
• Relative humidity at 40 ºC [104 ºF] *),
• With mains power where the voltage fluctuations do not exceed 10 % of the nominal value,
• Under contamination level 2 conditions,
• Under over-voltage category II conditions,
*) Between 5 - 30 ºC [41 - 86 ºF] the device can be operated at a relative humidity of up to 80 %. At temperatures
between 31 - 40 ºC [87.8 - 104 ºF] the humidity must decrease proportionally in order to ensure operational read-
iness (e.g. at 35 ºC [95 ºF] = 65 % humidity, at 40 ºC [104 ºF] = 50 % humidity). The device may not be operated
at temperatures above 40 ºC [104 ºF].
2.4
Ambient Conditions for Storage and Transport
For storage and transport the following specifications to ambient conditions apply:
• Ambient temperature -20 – +60 ºC [-4 – +140 ºF].
• Maximum relative humidity 80 %
2.5
Hazard and Warning Information
2.5.1 General Information
► If the device is not used in compliance with the supplied instructions, the safety of the device can
no longer be guaranteed.
► The device may only be operated using a mains cable with the country-specific plug system. Any
necessary alterations must be carried out by a qualified electrician.
► The device may only be operated if the information on the identification plate conforms to the
specifications of your local mains power supply.
► The device may only be plugged into outlets which are connected to the protective conductor
system.
► The mains plug must be easily accessible.
► Disconnect the device from the mains before carrying out work on the electrical parts.
► Check connection cables (such as power supply cords), tubes and housing (i.e. the key-pad) regu-
larly for damage (i.e. kinks, cracks and porosity) or signs of ageing.
► Devices with damaged connection cables, tubes or housing parts or other defects must not be
operated!
► Defective devices must be put out of service immediately. Remove the mains plug and ensure the
device is not used. Send the device for repair!
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