Owner's manual

12
Indication
no power to
valve
no response
to set point
valve does
not work in
“active”
position
valve does not
work in close
position
Remedy
check connection of power supply
disconnect FMA transducer from power
supply; remove the shorting condition or
check polarities; fuse resets automatically
check power supply for appropriate output
return to factory for replacement
apply appropriate gas pressure
check cables and all connections or
replace
re adjust set point
re adjust valve
return to factory for replacement
re adjust valve
return to factory for replacement
check cable and connectors or replace
decrease pressure to correct level
adjust appropriately
re adjust valve
return to factory for replacement
check cable and connectors or replace
disassemble to remove impediments or
return to factory
Likely Reason
power supply off
fuse blown
power supply problem
pc board defective
inadequate gas pressure
cable or connector
malfunction
set point is too low (<2% of
full scale)
valve adjustment wrong
pc board defective
incorrect valve adjustment
pc board defect
cable or connector
malfunction
differential pressure too high
insufficient inlet pressure
incorrect valve adjustment
pc board defect
cable or connector
malfunction
orifice obstructed
f.2 Troubleshooting Guide
For best results it is recommended that instruments are returned to the
factory for servicing. See section a.3 for return procedures.
f.3 Technical Assistance
Omega Engineering will provide technical assistance over the phone to
qualified repair personnel. Please call our Flow Engineering Dept. at 800-
872-9436 Ext. 2298. Please have your Serial Number and Model Number
ready when you call.