Product Description | 2
Instruction Manual MINK MM 1104-1142 BV ATEX_EN_en
7 | 40
Note:
The non-return valve (NRV) is no reliable means to prevent suction and shall not be used as a
non-return valve or shut-off valve for the system.
If the machine needs to be maintained after shutdown:
●
Provide an additional manual or automatic operated non-return valve in the suction line.
Permitted environmental conditions, see
2.3
Design Options
The design options described in the following chapters might be combined.
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 remains in the
machine and does not escape to the environment.
It is a very important feature for applications where gases potentially dangerous to human health
are not allowed and the concentration of the process gas must not exceed the admissible values of
the ambient atmosphere of the machine.
This machine is specifically equipped with:
– pressure relief lines
– collecting lines
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 prohibited.
●
Make sure that the machine is sufficiently vented (see
13]).
2.3.2
Aqua Version
The Aqua version is a design option for conveying condensable vapors (water).
This machine is specifically equipped with:
– corrosion protection coating
– optional condensate drain (CD) in the internal silencer.
