Light Chemical Version

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Media potentially dangerous.

Risk of poisoning!

Risk of infection!

  1. Wear appropriate personal protective equipment in case of high concentration of the medium in the ambient atmosphere of the machine.

The light chemical version is a design option to handle mild non-corrosive & non-toxic process vapors from chemical and pharmaceutical industries. The process gas remains in the machine and doesn’t escape to the environment, similar to gas tight version. As the machine is a dry claw vacuum pump and is not made to handle liquids, condensation inside the machine should be avoided. The light chemical version is also available in combination with aqua version for conveying condensable vapors.

If you're not sure if this light chemical version is suitable for your application, please contact a Busch representative.

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:

  1. barrier gas lines
  2. collecting lines
  3. shaft seal rings
  4. o-ring
  5. gasket

Requirements for a proper functioning:

Description

Ambient pressure

The light chemical 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 barrier gas lines.

Ambient environment

Closed air cooling systems are not suitable and therefore prohibited.

  1. Make sure that the machine is sufficiently vented (see Installation Conditions).