English; Introduction; Description; Area Of Application - BUSCH COBRA NC 0100 B Supplément Au Manuel D'installation Et De Maintenance

English

Introduction

Congratulations on your purchase of the Busch vacuum pump. With
watchful observation of the field's requirements, innovation and steady
development Busch delivers modern vacuum and pressure solutions
worldwide.
These operating instructions contain information for
product description,
–
security,
–
installation and commissioning,
–
maintenance,
–
of the vacuum pump.
For the purpose of these instructions, "handling" the vacuum system
means the installation, commissioning, influence on operating
conditions and maintenance of the vacuum system.
Prior to handling the vacuum system, these operating instructions
shall be read and understood. If anything remains to be clarified
please contact your Busch representative!
Keep these operating instructions and, if applicable, other pertinent
operating instructions available on site.
Please keep the documentation for further reference.
NC 0100...0300 B, Cat. 1
0870549526 (En/ De/ Fr)

Description

CAUTION
The indications noted in this chapter replace the indications of the
standard installation and operating manuals !

Area of application

The COBRA NC 0100 ... 0300 B vacuum pumps are certified for
drawing explosive gas and vapour mixtures out of and in zone 0.
The vacuum pump can draw explosives gases or vapours of explosion
group IIB3 with a MESG ³ 0,65 mm and temperature class T4 (COBRA
NC 0100/ 0200/ 0300 B) or T3 (only COBRA NC 0200/ 0300 B). The
outside of the vacuum pump is an equipment of temperature class T4
(COBRA NC 0100/ 0200/ 0300 B) or T3 (only COBRA NC 0200/ 0300
B). Please also note the corresponding explosion protection markings
on the pump and the switch off temperature setting.
The vacuum pump should not be used for the handling of explosive
atmospheres, which can self-destruct or are chemically unstable.
The vacuum system may be set up in zone 1 areas.
The authorized ambient temperature is situated between -20 °C and
+40 °C.
The temperature of the sucked gases must be inferior to 60 °C.
The vacuum pump should only be used if the material is made to resist
to chemical and mechanical influences (e.g. corrosion) during
operation, so that the explosion protection isn't suppressed. This is
particularly applicable for the safety devices, such as temperature probe
and pressure switch.

General description

The vacuum system consists of a single-stage screw vacuum pump
with flame arresters on the inlet and outlet ports, as well as the
necessary supervisory and monitoring equipment. The vacuum system
is mounted on a robust base frame and completely wired up with Exi or
Exe terminal boxes. The vacuum pump is equipped with a direct
cooling system or a recirculating cooling system to cool the pump.
Introduction
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