Eliminating Faults - Festo ZSB-1/8 Operating Instructions Manual

Fault
Output A not exhausted inspite of both
buttons being pressed within < 0.5 sec.
Output A pressurized in spite of:
- actuation time of both buttons > 0.5 sec.
- one button being released
- only one button pressed
Reduction of pressure at output A lasts too
long.
Air comes our of R when both finger lever
valves are actuated
Fig. 17
0010a
ZSB(D)-1/8

Eliminating faults

Possible cause
Input pressure too high
Tubing for finger lever valves
not of equal length
Input pressure too low
Functional fault
Fault in tubing
Functional fault
Remedy
Reduce input pressure at P
Cut tubing for finger lever valves to equal length
Increase input pressure at P
at least 3 bar
Return to Festo
Use short tubing; avoid angled screw connections
Return to Festo
and P
1 2
and P to
1 2
D/GB 16