KNF LABOPORT N820.18 EX Traduction Du Mode D'emploi Original page 74

Use
Equipment
protection
level
Ga
Gb
Gc
Designation
Internal atmosphere only
14
Chemically-resistant Laboratory pump N820.18 EX / N840.18
3.4.6 Equipment protection level for gas
The equipment protection level describes the frequency and
the duration of the occurrence of explosive atmospheres in an
area.
Description*
Devices with very high protection level for
use in potentially explosive areas. With
these devices, there is no risk of ignition
during normal operation or in the event of
foreseeable or infrequent faults/malfunc-
tions.
Devices with high protection level for use in
potentially explosive areas in which there is
no risk of ignition during normal operation or
in the event of foreseeable or infrequent
faults/malfunctions.
Device with increased protection level for
use in potentially explosive areas. There is
no risk of ignition during normal operation.
The devices have a number of additional
protection measures which ensure that, in
the event of commonly foreseeable faults in
the device, no danger of ignition exists.
Tab.8: *according to DIN EN ISO 80079-36
3.4.7 Special operating conditions
Additional conditions for the diaphragm pump:
§
Do not install the pump outdoors. Commissioning may
only be performed with suitable weather- and corrosion-
protection paneling.
§
Do not install the pump in potentially explosive atmos-
pheres. It is only suitable for transferring explosive atmos-
pheres.
Translation of Original Operating Instruction, KNF 317428-317425 05/21
Description
Special operating conditions
Constructional
safety
Very high
High
Increased
EX