Use
Vacuum Pumps N 920 APE-W and N 920 APDC-B
4
Translation of original Operating and Installation Instructions, english, KNF 121690-121708 09/19
2. Use
2.1. Proper use
The pumps are exclusively intended for transferring gases and va-
pors.
Owner’s responsibility
Only install and operate the pumps under the operating parameters
and conditions described in Chapter 4. Technical Data.
Only complete pumps may be taken into service.
Make sure that the installation location is dry and the pump is pro-
tected against rain, splash, hose and drip water as well as other
pollutions.
The gas-tightness of the connections between the application
pipes and the pump (or the pump connection) must be checked
regularly; with leaky connections, there is a danger that hazardous
gases or vapors may escape from the pump system.
Before using a medium, check whether the medium can be trans-
ferred danger-free in the specific application case.
Before using a medium, check the compatibility of the materials of
the components in contact with the medium (see Chapter 4. Tech-
nical Data) with the medium.
Risk of hazardous gas mixtures during pump operation if dia-
phragm ruptures: Depending on the medium transferred, a hazard-
ous mixture may be produced in the case that the diaphragm rup-
tures, if the medium mixes with the air in the compressor housing.
Only transfer gases which remain stable under the pressures and
temperatures occurring in the pump.
Operating parameter and
conditions
Requirements for
transferred medium
