Elmo Rietschle R-VWP 500/1000/1500/2500 - Manual (Page 33)

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Malfunctions: Causes and elimination
Fault Cause Troubleshooting Important
Pre-pump does
not reach ultimate
vacuum 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
Sealing oil degrades
rapidly Sealing rings and the wear-
ing sleeve of the shaft
feedthrough are worn out Change sealing rings and the
wearing sleeve of the shaft
feedthrough Section 7.2.4
The machine makes
a abnormal noise Deposits on the rotary piston Clean the working space and
the rotary piston Elmo Rietschle
Service
The coupling rubbers are
worn Replace coupling rubbers Section 7.2.1
Please contact Elmo Rietschle Service for other malfunctions or those that cannot be eliminated.