KNF LAB LABOPORT N 820 Mode D'emploi page 88

Chemically-resistant Laboratory pump N820.18 EX
Pump standstill
Translation of Original Operating Instruction, English, KNF
317428-317425 09/20
DANGER
Excessive pressure, with all of the associated hazards,
can be prevented by means of a bypass line with a pres-
sure relief valve between the pressure side and suction
side of the pump. Further information is available from
KNF Customer Service (contact data: see
www.knf.com).
à
Establish normal atmospheric pressure in the lines while
the pump is at a standstill (relieve pump pneumatically).
Risk of dangerous gas mixtures during
pump operation
Depending on the medium being trans-
ferred, breakage of the media-contact-
ing components can result in a danger-
ous mixture if the medium mixes with
the air in the compressor housing or
the surroundings.
à
Before using a medium, check the
compatibility of the media-con-
tacting components (see 6 Tech-
nical data) with the medium.
Operation
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