KNF N 813.3 AN.29DC-B, Перевод оригинальных инструкций по эксплуатации и установке

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Diaphragm Vacuum Pumps N 813 Troubleshooting
Translation of original Operating and Installation Instructions, english, KNF 121240-121506 09/19 35
Flow rate, pressure, or vacuum are too low
The pump does not achieve the performance stated in the technical data or on the data sheet.
Cause Fault remedy
Condensate has collected in the
pump head.
➔
Detach the condensate source from the pump.
➔
Flush the pump (see Chapter 8.2.1).
➔
Install the pump at the highest point in the system.
Presence of positive pressure
on the pressure side with simul-
taneous vacuum or positive
pressure on the suction side.
➔
Change the pressure conditions.
Cross-section of pneumatic
hoses or connectors too narrow
or restricted.
➔
Disconnect the pump from the system and determine output
values.
➔
Remove restriction (e.g. valve) if necessary.
➔
If applicable, use larger-diameter hoses or connectors.
Leaks in connections, hoses or
pump head.
➔
Make sure the hoses are properly seated on the hose
connectors.
➔
Replace leaking hoses.
➔
Eliminate leaks.
Connections or hoses complete-
ly or partially clogged.
➔
Check hoses and connections.
➔
Remove any parts or particles causing blockages.
Pump head components are
soiled.
➔
Clean head components.
Diaphragm or valve plates are
worn.
➔
Replace diaphragm and valve plates
(see Chapter 8.3).
Diaphragm and valve plates
have been replaced.
➔
Make sure that the shim rings have been replaced onto
the diaphragm screw thread.
➔
Check head connection and hose connections for leaks.
Tab. 15