Emerson Rosemount CT5400, Installation, Operation And Maintenance Manual

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7 Troubleshooting and diagnostics
7.1 Troubleshooting, repairs, and failure
diagnostics
Failure diagnosis of the analyzer comprises interpretation of system fault messages shown
on the LCD display, visual examination, performing failure diagnostic tests, and
downloading performance data and sending that data to Emerson for analysis.
In the failure diagnosis procedures, all controls and indicators are on the analyzer unless
otherwise indicated.
The analyzer is specifically designed to run unattended for long periods, to automatically
resolve system issues, and to recover from power failures and return to a normal working
state. This troubleshooting guide is intended to assist maintenance personnel when the
analyzer has not appeared to be working normally for a period of more than five minutes. If
the procedures given in this chapter fail to return the analyzer to normal operations or do
not identify a repairable fault, notify your Customer Care Representative for further
assistance.
Observe and obey all safety precautions when performing preventative maintenance on
the analyzer.
Important
The troubleshooting and failure diagnosis procedures described in this chapter assume that any host
equipment provided by you is fully functional. Always make sure that the host equipment is fully
serviceable before performing failure diagnosis on the analyzer.
Failure diagnosis, repair, and maintenance must only be performed by:
• Maintenance engineers who have the necessary skills and training , and who have
been authorized to perform maintenance on the analyzer.
• Emerson
™
customer care engineers
In all the cases described in this chapter, maintenance personnel must perform the repairs
by directly replacing the faulty item with a known serviceable spare part supplied by
Emerson. All other items must be repaired or replaced by the manufacturer.
You can gain access to repairable and replaceable parts by removing the top and or
bottom covers of the analyzer. There is no need to remove any other parts.
Troubleshooting and diagnostics
Installation, Operations, and Maintenance Manual 57