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VCP
10.17
2
9.0 INFORMATION REGARDING FAULTS
VAL.VCP.--.M.A5.1017.EN
Issue: A5
1) Information necessary
a) Description of problem;
b) Photo showing the entire valve and how it is installed;
c) Valve type;
d) Does the valve start up without any problem after long shutdowns?
e) Is the outlet spout free of encrustations which could reduce the cross-section?
f) Does the weather conditions have a negative influence on the operation of the valve?
2) Checking the silo
a) Is silo pneumatically filled with > 1.5 bar?
b) In case of more silos, are all of them provided with a separate spring-loaded pressure relief valves?
c) Are the silos connected to each other?
d) Does each silo have its own dust filter?
3) Valve check
a) Is valve installed perfectly vertically?
b) Check diaphragm on regular basis.
4) Material check
a) Material description?
b) Bulk density? (kg/dm
)
3
c) Particle size? (μm/mm)
d) Moisture? (%)
e) Flowability? (flow the material down on a metal plate by varying the angle from low to steep)
f) Compressibility? (can you make a "snowball"?)
g) Abrasive material? (does it hurt when rubbing it between fingers?)
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