SMC Networks IP8000 Operation Manual page 25

The actuator used is too small
in the capacity.
Use a pilot valve with output
throttle.
(Refer to 11-1 Pilot valve output
with throttle)
Change the gain suppression
spring from standard to (A)
※Part No.: P22401123
Leakage in the piping
Check and find out the leakage
3.Hunching occures
The restrictor is clogged.
Clean the restrictor.
(Refer to 8. Maintenance and
check)
※
4.Too large consumption flow rate
Leakage in the actuator.
Check whether or not the O-
ring and packing in the actuator
is broken
The actuator sizing is inadequate
(too large resistance of actuator
gland packing)
Review the actuator
Dust caught in the positioner
pilot valve.
25
Disassemble and check the
pilot valve.