Eliminating Faults - Festo HMPL Serie Instrucciones De Utilizacion

HMPL-...
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Eliminating faults

Fault
Uneven movement of
the linear module
Hard knocking in
stroke end position t k d
Hard knocking in
stroke end position
Faults in position
interrogation
Heavy leakage
HMPL-... does not
reach the desired h th d i d
speed
Fig. 33
Festo HMPL-... 0005NH – English
Possible cause
One-way flow control
valves fitted incorrectly
Shock absorber defective
iti
Linear module overloaded
Rubber buffer worn
Position of proximity
switches incorrect
Incorrect type of proximity
switched used
Proximity switch defective
Ferritic parts in vicinity of
proximity switch
HMPL-... is distorted
Seals worn
Flow control valves closed
No air volume
Pressure too low
High friction or counteract-
ing force
Remedy
Restrict the exhaust if possible
(as at delivery)
Replace shock absorber
Reduce speed
Replace rubber buffer (only with
HMPL-16/20-...)
Correct position of proximity
switches
Use only proximity switches of
type SME/SMT-8-...-B
Replace proximity switch
Use parts made of non-magnetic
materials
Fasten the HMPL-... to a flat base
Replace worn parts
– yourself with wearing parts kit
– by returning to Festo for
repairs
Open up flow control valves
Increase connection diameters,
switch volume upstream
Pressurize HMPL-... with at least
4 bar
Select larger linear module
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