rotork gp series User Manual

Installation, Commissioning and Maintenance Manual
30
ID FAILURE POSSIBLE CAUSES CORRECTIVE MEASURES
1 Incorrect valve position • Fault of pipeline valve • Consult the valve manufacture’s documentation
2 Incorrect indication of valve position • Incorrect signal from limit switches
• Check limit switches position (according
instructions reported in the job specific
documentation)
3 Incorrect movement
• Irregular supply of operating medium
• Verify the supply pressure and adjust as
necessary
• Worn parts • Contact Rotork Fluid Systems
• Fault in control panel equipment
(if present)
• Contact Rotork Fluid Systems Customer Service
• Fault of pipeline valve • Consult the valve manufacture’s documentation
4 Valve stroke not fully completed
• Insufficient gas flow • Increase gas supply flow
• Incorrect assembly between actuator
and valve
• Perform assembling according to INSTALLATION
ON VALVE, page 10
• Valve blocked • Consult the valve manufacture’s documentation
• Stop bolts wrong setting
• Adjust stop bolt setting following instructions in
ANGULAR STROKE SETTING, page 17
5 Leakages
• Stop bolts wrong setting
• Adjust stop bolt setting following instructions in
ANGULAR STROKE SETTING, page 17
• Worn seals
• Replace seals according instructions reported in
PM-GP-006, PM-GP-007
6 Actuator moves too fast
• No pressure on pipeline • Restore pipeline pressure
• Supply pressure greater than allowed
range values
• Verify the supply pressure and adjust as
necessary
7 Actuator moves too slow
• Fault on pipeline valve (valve hardened) • Consult the valve manufacture’s documentation
• Supply pressure lower than allowed
range values
• Verify the supply pressure and adjust as
necessary
• Possible internal undue friction • Contact Rotork Fluid Systems Customer Service
8 Loss of power
• Inadequate supply pressure
• Ensure that the supply pressure is above the
minimum operating pressure of the actuator
and that the output torque produced at supply
pressure exceeds the required valve torque.
• Leakage from cylinder
• Replace seals according instructions reported in
PM-GP-006, PM-GP-007
For other problems, please contact Rotork Fluid Systems Customer Service.
15.0 Troubleshooting
A4US
US
A4
US A4
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A4

rotork gp series Specifications

General

Enclosure	IP66
Communication Protocols	Foundation Fieldbus
Inputs	Digital
Outputs	Digital, Relay
Display	LCD
Protection Rating	IP66
Hazardous Area Certification	ATEX, IECEx
Power Supply	24 VDC, 115 VAC, 230 VAC