Safety
12
Make certain that the temperature of the medium is always
sufficiently below the ignition temperature of the medium so
as to prevent ignition or explosion. This also applies for ab-
normal operating situations.
At the same time, note that the temperature of the medium
rises as the pump compresses the medium.
Therefore, make certain that the temperature of the medium
also remains sufficiently below the ignition temperature of the
medium even when it is compressed to the maximum permis-
sible operating pressure of the vacuum system. The maxi-
mum permissible operating pressure of the vacuum system is
given in Chapter 5 Technical data [} 24].
Make certain that the permissible ambient temperature (see 5
Technical data [} 24]) is not exceeded.
Where applicable, also take into account external energy
sources (such as radiated heat sources) that might heat the
medium further.
In case of doubt, contact KNF Customer Service.
3.6 Use
3.6.1 Proper use
The pumps are intended exclusively for delivering gases and
vapors.
The pumps are intended exclusively for operation in indoor ar-
eas and in non-explosive atmospheres. The Ex designation is
valid only for the pumping chamber (media-contacting area).
Vacuum systems with ATEX designation do not always
conform to the regulations governing potentially explo-
sive atmospheres in countries outside the EU.
3.6.2 Foreseeable misuse
The pumps must not be operated in explosive atmospheres.
The pumps are not suitable for use below ground.
The pumps are not suitable for transferring the following:
§
Dusts
Translation of Original Operating Instruction, KNF 317428-317425 02/23
Chemically-resistant Laboratory pump N820.18 / N840.18