Periodic Inspections; Cleaning The Fixed Nozzle; Cleaning The Nozzle - GE FVP110 Maintenance Manual

GE Energy

Periodic Inspections

To maintain problem-free plant operation, periodic inspections are required. At each
periodic inspection, ensure that:
❑
No external damage is seen.
❑
No leakage from the FVP110 or the piping around it is detected.
❑
No build up in the drain, or dust or oil adhering to the air supply line has occurred.

Cleaning the Fixed Nozzle

The FVP110 fixed nozzle is attached to the control relay's surface that engages the
FVP110's main structure (Figure 40). To clean the fixed nozzle:
1. Detach the control relay from the FVP110 main structure as in "Replacing the Control
Relay Assembly" on page 69.
2. Thread a wire with a 0.25 mm diameter through the nozzle to clean it.
3. Replace the nozzle and O-ring at the original position and re-attach the control relay.
Figure 40 Cleaning the Nozzle
All the O-rings used for the sealing of pneumatic signal
CAUTION
circuits are made of silicon rubber. The sealing capability is
degraded if general silicon grease is applied. When applying
grease to a sealing part, use a type of grease compatible with
silicon rubber, such as fluoride grease and grease for silicon
rubber.
FVP 110 Fieldbus Valve Positioner Manual
68