BIFFI FCB Series, Руководство пользователя

Страница: 23 / 30

Service Instructions
VCIOM-15313-EN Rev. 1 March 2022
19
Section 5: Troubleshooting
Troubleshooting
Section 5: Troubleshooting
5.1 Fault Insertion
In the unlikely event of a fault developing, the Symptoms and Solutions Table is provided
to assist the service engineer. Table 5 is designed to cover as wide a range of Biffi FCBB
Actuators as possible. Reference to equipment that is not supplied should
be ignored.
Table 5. Symptoms and Solutions Table
Symptom Potential Causes Remedy
Erratic movement
Irregular supply of operating
medium Check operating medium for consistent supply
pressure and correct as necessary
Inadequate lubrication Dismantle, relubricate and reassemble
Worn parts
Dismantle. Visually inspect for significant wear
Actuator replacement may be required
Defective valve Consult the valve OEM’s documentation
Short stroke
Incorrectly set stops
(valve and/or actuator)
Check the position of the travel stops and
readjust as necessary
Hardened grease
Dismantle, remove any hard grease, relubricate
and reassemble
Debris left in the cylinder or
housing during maintenance Disassemble cylinder assembly to remove debris.
Reassemble cylinder assembly as necessary
Defective valve Consult the valve manufacturer’s documentation
Apparent lack of torque
Inadequate supply pressure
Ensure supply pressure is above the minimum
operating pressure of the actuator and that
output torque produced at supply pressure
exceeds valve torque demand
Incorrect speed control settings Adjust speed controls to increase flow
Exhaust port blocked
Remove and clean the exhaust port silencers
and replace
Pipe work blocked, crushed
or leaking Examine the pipe work for blockages, crushed
pipe or leakage. Clear or replace as necessary
Defective controls
Examine the controls, refurbish or renew as
necessary. Refer to component manufacturer’s
documentation
Defective piston seal
Dismantle the cylinder assembly and
remove the defective piston seal. Fit new seal and
reassemble
Defective rod seal
Dismantle the cylinder assembly, remove the
defective rod seal. Fit new seal and reassemble
Defective housing seal
Dismantle the housing assembly and remove the
defective seal. Fit new seal and reassemble
High valve torque or valve seized Consult the valve OEM documentation
Defective spring
Check for noise and/or erratic operation.
Replace spring if required