Diaphragm pump N922 EX
Operation
Translation of Original Operation and Installation Instruction, english, KNF 313600 11/19
29
Vapors as medium
à
The service life of the diaphragm can be extended by preventing the
formation of condensate in the pump. Therefore, only perform work
with saturated or nearly saturated vapors with a warm pump.
Operation with open suction-side gas connection can result in con-
taminants and objects being drawn in.
8.2 Information on switching the pump on and off
Switching on the pump
The pump may start up against pressure and/or vacuum during
switch-on (see
). This also applies during operation
after a brief power failure.
à
Ensure that normal atmospheric pressure is present in the lines when
switching on.
Switching off the pump
à
KNF recommends: When transferring aggressive media, flush the
pump before switching off (see Chapter
) to ex-
tend the service life of the diaphragm.
à
Establish normal atmospheric pressure in the lines (relieve pump
pneumatically).
Recommissioning
à
Before recommissioning, observe the applicable standards, guidelines,
regulations and technical standards at the electrical connection.
Inspecting the pump
à
Inspect the pump periodically for external damage or leakage.
