Elmo Rietschle V-VTN 6/10/15/25/40/60 - Manual (Page 26)

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Malfunctions: Causes and elimination
Fault Cause Troubleshooting Important
Final pressure (max.
vacuum) is not
reached Machine or system leaking Check the pipework and
screw connections for leaks
and to ensure that they are
fi rmly seated. Section 7.2
Blades are worn or damaged Replace blades Section 7.2.2
Section 7.4
Machine gets too hot Ambient or intake temperature
is too high Ensure it is being used prop-
erly Section 2.3
Cooling air supply is ob-
structed Check environmental condi-
tions Section 5.1
Clean ventilation slots Section 7.2
The regulating valve is dirty so
that the permissible vacuum
value is exceeded. Clean or replace the regulat-
ing valve Section 7.2
Section 7.4
The machine makes
an abnormal noise The compressor housing is
worn (chatter marks) Repair by manufacturer or
authorised workshop Elmo Rietschle
Service
The regulating valve is vibrat-
ing Replace the valve Section 7.4
Blades are damaged Replace blades Section 7.2.2
Section 7.4
Please contact Elmo Rietschle Service for other malfunctions or those that cannot be eliminated.