Asco joucomatic 448 Serie Puesta En Marcha Y Consejos De Utilización página 9

GB
Problems solving
Problem
Cylinder leaks somewhere
along innersealing band
Cylinder leaks
in piston area
Cylinder leaks
in end cap area
Piston moves slowly
or jerkily
Piston does not reach
end position
Piston impacts too hard
at one or both end positions
Sensors do not work properly
Installation and operation
Possible Cause
Inner sealing band dirty
Piston seal defective
O-ring seal defective
1) Contamination by air or abrasion.
2) Poor lubrication.
3) Defective piston seal.
4) Speed set too slow.
5) Operating pressure too low.
6) Standard grease in the cylinder.
Cushion needle screwed down too tight.
1) Wrong setting of end cushioning
2) Possibly overload
3) Cushioning needle, O-rings on end caps/cushining
spigot, piston seal or inner sealing band defective.
1) Ferritic parts too close to sensors
2) Sensors defective.
Remedy
Clean inner sealing band
Replace piston seal
Replace O-ring seal
1-3) Dismantle cylinder completely,
clean and regrease.
Replace wear parts.
4) Increase speed.
5) Check operating pressure.
6) Use slow speed grease.
Adjust cushion needle.
1) Reset with valve needle.
2) Provide additional shock absorber.
3) Check parts and replace if necessary.
1) Use parts made of non-magnetic
material
2) Replace Sensors.
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