Operating instructions VacuStar L400
Malfunctions
28
8.3 Malfunction table
Malfunction:
Possible cause
Corrective action
Execution
VacuStar L400's
delivery rate
decreases
Vacuum filter soiled
Clean vacuum filter
Operator
Leaky suction line / fittings
Look for leaky spots and
eliminate leak
Specialised staff
Speed too low
Adjust speed
Operator
Wear of rotor vanes,
possibly caused by dirt or liquids
that have gotten into the
VacuStar L400 (sucking over of
foreign matter)
Replace rotor vane, remove
dirt and have VacuStar L400
overhauled at an authorised
workshop
Specialised staff
Abnormal noise
emission
VacuStar L400 is badly aligned.
Align the VacuStar L400
precisely.
Specialised staff
Bearing defective
Replace bearing (or have it
replaced)
Lack of lubricating oil
Top up oil, clean oil reservoir
and suction filter
Operator
Unsuitable lubricating oil
Fill in oil according to
lubrication schedule
Operator
Rotor vanes are jammed
Check rotor vanes
Specialised staff
Casing bore shows grooves or
corrugations due to the
aspiration of dirt
Have casing bore re-turned
and honed at an authorised
workshop. In case of heavily
soiled intake air, install fine
filter
Specialised staff
Wrong speed
Maintain speed range
Operator
Changed pressure
Maintain nominal pressure
Operator
Changed vacuum
Maintain nominal vacuum,
check exhaust system and
clean if necessary
Operator
Non-return valve rattles
Check non-return valve
Specialised staff
Foreign bodies in the
VacuStar L400
Remove foreign matter. Flush
out the VacuStar L400.
Specialised staff
Slide breakage
Switch off the VacuStar L400
at once and repair it.
Specialised staff
Compressed air
temperature too
high
End pressure too high
Maintain nominal pressure
Operator
Exhaust silencer clogged
Replace exhaust silencer
Specialised staff
Four way cock in wrong position
Correctly adjust four way cock Operator
Non-return valve is stuck
Check non-return valve and
clean if necessary
Specialised staff
Vacuum filter clogged
Clean vacuum filter
Operator
Vacuum too high
Maintain nominal vacuum
Operator
Содержание VacuStar L400
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