Use and Maintenance Handbook
– Prime 400 Packaging Machine
Page 68 of 71
12.3.2 Command valves with a pneumatical actuation direction
Anomaly
Probable Cause
Solution
The valve doesn’t invert
Low-power
pilotage
pressure
Check
the
pilotage
pressure (between 3
and 6 bar)
Stopper
or
cursors
glued
Take
apart
and
carefully clean
It reveals a lack of air
from the holes
Wear of the internal
seals.
Change
the
internal
seals
Change the component
Centering
spring
collapsed
Change the springs
Change the component
Leakage
from
the
pilotage part
Take apart and clean, if
necessary change the
component
12.3.3 Flow regulator
Anomaly
Probable Cause
Solution
Doesn’t succeed to
obtain the regulation of
the speed required.
Wear of the adjusting
cone
Change the component
