Product description
NC 400 B
Operating principle
The COBRA NC 400 B vacuum pumps with magnetic coupling work
according to the tried and tested screw vacuum pump.
The operation of the magnetic coupling pump is identical to that of the
standard coupling.
The use of a magnetic coupling allows to suppress the radial shaft seals
and their lubrication system.
The starting torque of the drive motor must not exceed the nominal
torque of the magnetic coupling. This means:
–
145 Nm for COBRA NC 400 B
ATTENTION
The motor start-up is done using a converter which allows a pro-
gressive start-up for about 30 seconds and helps to limit any risks of
possible overheating of the magnetic coupling.
CAUTION
The magnetic coupling has been designed for use under normal
operating conditions.
When running under extreme conditions, the magnetic coupling
can overheat leading to the destruction of the coupling bell and
thus the loss of leak tightness of the pump, as the coupling bell
also ensures that the pump is leak tight.
Safety
Intended use
DEFINITION :
To rule out any misunderstanding, the term “ handling ”
of the vacuum pump implies transport, storage, installation and com-
missioning of the pump as well as influences on operating conditions,
maintenance, troubleshooting and overhaul of the vacuum pump.
The vacuum pump is intended for industrial use. It may only be opera-
ted by qualified personnel.
The need for personal safety regulations depends mainly on the appli-
cation the pump will be used in. The end user must provide the opera-
tors with the necessary means and must inform his personnel about
any dangers coming from the processed product.
The end user of the vacuum pump must observe the safety regulations
and must train and instruct his personnel accordingly.
The maintenance instructions must be followed.
These Installation and Maintenance Instructions as well as the standard
Roots pump manual must be read and understood before handling the
vacuum pump. If in any doubts, please contact your Busch representa-
tive.
Safety information
The vacuum pump has been designed and manufactured in accordance
with the latest technical standards and safety regulations. However,
whilst handling the vacuum pump, residual risks do remain.
Various safety instructions can be found in this handbook as well as on
the pump. These safety instructions must be followed. Safety instruc-
tions can be detected through one of the following keywords
DANGER, WARNING and CAUTION as follows :
COBRA Vacuum Pump with Magnetic Coupling
Product description
0870549497 (EN)
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