Tuttnauer 3870 EHS (HSG-WS) [8/58] General information
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Tuttnauer 3870 EHS (HSG-WS) [8/58] General information

Tuttnauer 3870 EHS (HSG-WS) [8/58] General information
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2 GENERAL INFORMATION
2.1 Introduction
The EHS is a high speed, high vacuum, high capacity, hospital grade
sterilizer with FDA cleared flash cycle. A built in vacuum pump and
steam generator allows for increased load size and dramatically reduces
total cycle time. The closed door drying system provides a faster and
more thorough drying cycle. Six automatic cycles are available. Four
sterilization cycles and two test cycles. EHS models are available in a
10” or 15” chamber.
The EHS autoclave, models 2540 and 3870 are designed for the
sterilization of wrapped and unwrapped instruments and related items
found in dental, medical and veterinary clinics, first aid rooms,
hospitals, laboratories etc. They are electrically – heated pre and post
vacuum sterilizers, using steam as the sterilizing agent. A computerized
control unit ensures a fully automatic sterilization cycle, and the control
and monitoring of physical parameters.
The EHS pre / post vacuum sterilizer has the following features:
¾ It is a Class B sterilizer in accordance with the European standard
prEN 13060-2
¾ It has a pre-vacuum conditioning stage
¾ It has a post-vacuum drying phase.
¾ It has a jacketed chamber
¾ It has a dual compartment water reservoir
¾ It has a complete water discharge system
¾ It has a PC friendly communication system
The advantages of this pre / post vacuum sterilizer are:
¾ Dramatically faster overall cycle time
¾ Better and deeper steam penetration into loads
¾ Increased load size
¾ More thorough and efficient drying of materials
¾ Automatically maintained water reservoirs
¾ Immediate availability of steam for sterilization
¾ Non recycled water reduces maintenance
The Vacuum pump:
The pre and post vacuum stages are achieved with the use of a high
volume liquid ring vacuum pump.
The advantage of the pre-vacuum stage is felt during the sterilization
stage. Vacuum removal of at least 99.5% of the air in the chamber
allows the steam to penetrate deeper into packed materials. Deeper
penetration allows for larger loads to be sterilized, thus saving time by
having to run fewer cycles.
The advantage of the post-vacuum stage is an efficient and thorough
drying of bagged and wrapped items. This is accomplished by the
combined use of a heated chamber and the vacuum removal of residual
moisture.

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