BUSCH COBRA ATEX NC 0100-0300 B, Инструкция по эксплуатации

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2 | Product Description
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NOTE
Technical term.
In this instruction manual, we consider that the term ‘machine’ refers to the ‘vacuum
pump’.
2.1 Operating Principle
Water-cooled version with direct cooling:
Water-cooled version with plate heat exchanger (optional):
The machine works on the one-stage, twin-screw pump principle.
Two screw rotors are rotating inside the cylinder. The pumped medium is trapped
between the cylinder and screw chambers, compressed, and transported to the gas out-
let. During the compression process, the two screw rotors do not come into contact with
each other nor with the cylinder. There is no need for a lubrication or an operating fluid
in the compression chamber.
2.2 Application
The machine is intended for the suction of air and other dry, non-aggressive and non-
toxic gases.
Explosive gases and vapour mixtures can be drawn according to the scope of the Direct-
ive ATEX 2014/34/EU.
It is necessary to check and ensure that the process media is compatible with the pump
materials and that the explosion protection will not be compromised e.g. by corrosion. If
necessary, contact your local Busch representative.
Depending on the equipment, the machine is intended for suction of explosive gases ac-
cording to the data given on the nameplate of the machine (NP), see
Explanation of
ATEX Classification [ ► 11]
.
Conveying of other media leads to an increased thermal and/or mechanical load on the
machine and is permissible only after a consultation with Busch.