KNF N838 E Series - Page 30

Operation
Diaphragm pump N838_E
30
Translation of Original Operating and Installation Instruction, KNF
347394-347605 09/23
NOTICE
Excessive pressure, with all of the as-
sociated hazards, can be prevented by
means of a bypass line with a pressure
relief valve between the outlet and inlet
of the pump. Further information is
available from KNF Customer Service
(contact data: see www.knf.com).
WARNING
Risk of dangerous gas mixtures during
pump operation if diaphragm breaks
If the diaphragm should break, the
medium will mix with the air in the com-
pressor housing or in the surroundings.
àStop pump immediately.
àReplace the diaphragm prior to fur-
ther operation (see Chapter 8 Ser-
vicing [}32]).
WARNING
Personal injury and damage to the
pump through automatic start
If pump operation is interrupted by the
thermal switch due to overheating, the
pumps start automatically after they
have cooled.
à Ensure that no dangerous situa-
tions can arise as a result.
NOTICE
Operation with open gas connection at
the inlet can result in contaminants and
objects being drawn in.