Instruction Manual

DFST
Festo DFST 0710NH
25
10 Eliminating faults
Fault Possible cause Remedy
Guide rod worn
on one side
Medium stream
approaches toggle lever
at an angle
Align stopper cylinder in transport
direction, medium stream must impact
toggle lever in a vertical position
(è Installation)
Hard impact on
the toggle lever
Cushioning incorrectly
set
Correct cushioning (è Commissioning)
Conveying speed too high Reduce speed
Shock absorber defective Replace shock absorber (è Spare
parts catalogue, www.festo.com)
Piston rod in
basic position
despite
Pipe connection error Check blanking plug
Checking the pneumatic tubing
despite
pressurization
Reduced flow through
angled screw connectors
Avoid angled screw connectors
Toggle lever
does not reach
end position
Cushioning incorrectly
set
Correct cushioning (è Commissioning)
end position
Material stream mass
(pressure force) too low
 Increase mass
 Increase friction coefficient between
conveyor and material
 Increase gradient of conveyor
Fig.27