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Vacuum system SC820G / SC840G
Pump does not start when starting a process despite required pressure re-
duction.
Cause
Overtemperature pro-
tection of the vacuum
system has been trig-
gered
Vacuum system does not pump
Cause
Connections or lines
are blocked.
External valve is closed
or filter clogged.
Translation of Originial Operating Instruction, KNF 339416-339418 02/23
Tab.30: Troubleshooting: Sufficient vacuum is not achieved despite
running pump
Troubleshooting
à
Disconnect the vacuum system from the electrical
mains.
à
Allow the pump to cool down.
à
Determine the cause of the overheating and rectify.
Tab.31: Troubleshooting: Pump does not start when starting a
process despite required pressure reduction
Troubleshooting
à
Check the connections and lines.
à
Remove the blockage.
à
Check external valves and filters.
Tab.32: Troubleshooting: Vacuum system does not pump
Troubleshooting
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