BUSCH Mink MV 1202 A, Instruction Manual

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2 | Product Description
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2.3.1 Gas Tight Version
WARNING
Media potentially dangerous.
Risk of poisoning!
Risk of infection!
• Wear appropriate personal protective equipment in case of high concentration of
the medium in the ambient atmosphere of the machine.
The gas tight version is a design option for applications where the process gas re-
mains in the machine and does not escape to the environment.
It is a very important feature for applications where gases potentially dangerous to hu-
man health are not allowed and the concentration of the process gas must not exceed
the admissible values of the ambient atmosphere of the machine.
Note: If the machine operates with a vacuum relief valve, ambient gases can enter the
inside of the machine, even after the machine was shut down and the vacuum relief
valve is closed. The leakage rate may increase as a result significantly.
This machine is specifically equipped with:
– pressure relief lines
– collecting lines
– shaft seal rings.
Requirements for a proper functioning:
Ambient pressure The gas tight machine requires an ambient pressure at the
gas discharge during the whole operation range of +/- 200
hPa (mbar), unless otherwise specified on the nameplate.
Leakage rate The machine is not absolutely gas tight.
The leakage rate of the machine described in this manual is of
0.1 hPa l/s (mbar l/s) at a suction pressure of 250 mbar. It can
considerably increase up to prohibited pressure values at the
gas inlet/outlet due to used shaft seal rings or clogged pressure
relief lines.
Ambient environment Closed air cooling systems are not suitable and therefore prohib-
ited.
• Make sure that the machine is sufficiently vented (see In-
stallation Conditions [ ► 8] ).
2.3.2 Aqua Version
The Aqua version is a design option for conveying condensable vapours (water).
This machine is specifically equipped with:
– corrosion protection coating
– optional condensate drain (CD) in the internal silencer.
2.4 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 equipped with a soft-starter.