KNF N 2400.15, Инструкции по эксплуатации и монтажу

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Diaphragm pump N 2400.15 Troubleshooting
Translation of original Operating and Installation Instructions, english, KNF 308934-308937 09/18 33
10. Troubleshooting
DANGER
Extreme danger from electrical shock!

Disconnect the pump power supply before work-
ing on the pump.

Make sure the pump is de-energized and se-
cure.

Check the pump (see Tab. 16 and Tab. 17).
Pump does not transfer
Cause Fault remedy
Pump is not connected with the
power source.

Connect pump with the power source.
No voltage in the power source.

Check room fuse and switch on if necessary.
Triggering device for PTC sen-
sors of the motor has operated
following to over-heating.

Disconnect pump from mains.

Allow pump to cool.

Trace cause of over-heating and eliminate it.
Connections or lines blocked.

Check connections and lines.

Remove blockage.
External valve is closed or filter
is clogged.

Check external valves and filters.
Condensate has collected in
pump head.

Detach the condensate source from the pump.

Flush the pump under atmospheric conditions some minutes
with air (if necessary for safety reasons: with an inert gas).
Diaphragm or reed valves are
worn.

Replace diaphragm and reed valves (see Chapter 0).
Tab. 16
Flow rate, pressure or vacuum too low
The pump does not achieve the output specified in the Technical data or the data sheet.
Cause Fault remedy
Condensate has collected in
pump head.

Flush the pump (see Chapter 9.2.1).

Install pump at highest point in system.
There is gauge pressure on
pressure side an at the same
time vacuum or a pressure
above atmospheric pressure on
suction side.

Change the pressure conditions.
Pneumatic lines or connection
parts have an insufficient cross
section.

Disconnect pump from system to determine output values.

Eliminate throttling (e.g. valve) if necessary.

Use lines or connection parts with larger cross section if
necessary.
Leaks occur on connections,
lines or pump head.

Eliminate leaks.
Connections or lines completely
or partially jammed.

Check connections and lines.

Remove the jamming parts and particles.
Head parts are soiled.

Clean head components.
Diaphragm or reed valves are
worn.

Replace diaphragm and reed valves (see Chapter 0).
Tab. 17