Emerson Process Management Bristol Series 9110 - Manual (Page 40)

Field Wiring 4-8 CI-9110
5. If the output pressure of the Remote Set Regulator fails to change even with a change at
the Command input, the internal fuse may be blown. Check and replace it as required
with a 1A, 250V 3AG type. If the fuse continues to blow, check for wiring mistakes at
the field wiring terminals or check for a defective PC board. Do not attempt further
operation until the problem has been resolved.
6. Once all the above checks have been completed, turn on the associated process and
verify that the Regulator is operating properly. Startup is complete.