Operation
Diaphragm pump N87.9 EX
24
Translation of Original Operation and Installation Instruction, english, KNF 323252 04/21
Vapors as medium
à
Preventing condensate from forming in the pump will extend the ser-
vice life of the diaphragm.Therefore, only use a warm pump with satu-
rated or nearly saturated vapors.
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 must not be started up against pressure or vacuum dur-
ing switch-on. 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 pumping corrosive media, flush the pump
before switching off (see Chapter
) to extend
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.
