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Malfunctions: Causes and elimination
Fault
Cause
Troubleshooting
Important
Final pressure (max.
vacuum) is not
reached
Leak on the suction side of
the vacuum pump or in the
system
Check the pipework and
screw connections for leaks
and to ensure that they are
firmly seated.
Section 7.2
Incorrect oil viscosity
The oil viscosity must comply
with ISO VG 100 as per DIN
51519
Section 7.2.3
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 lubricating oil is too vis-
cous
The oil viscosity must comply
with ISO VG 100 as per DIN
51519
Section 7.2.3
The air oil removers are dirty.
Change the oil separator ele-
ments
Section 7.2.4
The back pressure is too high
when the exhaust air is being
discharged.
Check the hose or the pipe
Section 5.3
Exhaust air contains
visible oil mist
The air oil remover devices
are not inserted correctly or
the O rings are missing.
Check that it is correctly
seated
Section 7.2.4
Unsuitable oil is being used
Use suitable types
Section 7.2.3
The air oil removers are dirty.
Change the oil separator ele-
ments
Section 7.2.4
The back pressure is too high
when the exhaust air is being
discharged.
Check the hose or the pipe
Section 5.3
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