KNF LABOPORT N820.3FT.29.18G, Manual

Page: 65 / 333

Use
Chemically-resistant Laboratory pump N820.18
EX
10
Translation of Original Operating Instruction, English, KNF
317428-317425 09/20
Designation Description
Symbol for explosion-proof pumps
II
Device group (see 3.4.1 Device groups )
2/-G
Device category (see 3.4.2 Device categories for gas )
IIB + H2
Explosion groups (see 3.4.3 Explosion groups )
T3
Temperature class (see 3.4.4 Temperature classes )
Gb
Equipment protection level (See Chapter 3.4.6 Equipment
protection level for gas )
Special operating conditions (See Chapter Special operating
conditions)
Internal atmos-
phere only
Special conditions (see 3.4.7 Special operating conditions )
Tab.3: Explosion protection designation
An ignition hazard assessment in accordance with standards
DIN EN ISO 80079-36 and DIN EN ISO 80079-37 was per-
formed for the pumps.
The explosion protection designation can also be found at the
following location:
§
Type plate of the pump
3.4 Explanations of the explosion protection
designation
3.4.1 Device groups
Device group I Device group I applies for devices that are used in under-
ground plants of mines as well as their underground systems
that could be endangered by methane and/or combustible
dusts.
Device group II Device group II applies for devices that are used in other ar-
eas that could be endangered by an explosive atmosphere.