Diaphragm pump N87.9 EX
Use
Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21
7
This function can be made possible on a project basis following consulta-
tion with KNF Customer Service.
2.3 Use in potentially explosive areas
In potentially explosive atmospheres (zones), only operate pumps and mo-
tors of the appropriate category and temperature class.
The pumps have the following EU explosion protection designation:
Designation
Description
Symbol for explosion-proof pumps
II
Equipment group (See Chapter
2/2G
Device category (See Chapter
Ex
Symbol indicates that the device complies with one or
more ignition protection types
H
Symbol for ignition protection type (See Chapter
)
II B + H2
Explosion groups (see Chapter
)
T4
Temperature class (see Chapter
Gb
Equipment protection level (See Chapter
Special operating conditions (See Chapter
Tab.3
An ignition hazard assessment in accordance with standards DIN EN ISO
80079-36 and DIN EN ISO 80079-37 was performed for the pumps. The
protective goals were reached by applying ignition protection type con-
structional safety "c".
The explosion protection designation can also be found at the following lo-
cation:
§
Type plate of the pump
Motor The pump motor must have at least the same explosion protection as the
pump.
2.4 Explanations of the explosion protection designation
2.4.1 Device groups
Device group I Device group I applies for devices that are used in underground 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 areas that could
be endangered by an explosive atmosphere.
