BUSCH COBRA NS 0070-0600 C, Инструкция по эксплуатации

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2 | Product Description
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2.1 Operating Principle
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.
The machine is intended for suction of explosive gases according to the data given on
the nameplate of the machine (NP), see
Explanation of ATEX Classification [ ► 8] .
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.
The machine is not intended for the placement in a potentially explosive environment ac-
cording to the data given on the nameplate of the machine (NP), see
Explanation of
ATEX Classification [ ► 8] .
The machine is capable of maintaining ultimate pressure, see
Technical Data [ ► 36]
.
The machine is suitable for continuous operation.
Permitted environmental conditions, see Technical Data [ ► 36] .
2.3 Start Controls
The machine comes without start controls. The control of the machine is to be provided
in the course of installation.
The machine can be optionally equipped with a starter unit or a variable-frequency drive.