Elmo Rietschle C-VLR 250/300/400/500 - Manual (Page 29)

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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
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
a abnormal noise Deposits on the rotary piston Clean the working space and
the rotary piston Elmo Rietschle
Service
The regulating valve is vibrat-
ing Replace the valve Section 7.4
Please contact Elmo Rietschle Service for other malfunctions or those that cannot be eliminated.