Emerson Rosemount OCX8800A Manual page 227

Manual
00809-0500-4880
Potential cause
Heater electronics failure.
Recommended actions
Check heater fuse F3 in electronics housing per
•
•
9.3.20 COe Htr Failure
Combustibles sensor heater could not reach final temperature.
Potential cause
COe heater circuit wiring open.
Recommended actions
Potential cause
COe heater open.
Recommended actions
Potential cause
Heater electronics failure.
Recommended actions
Check heater fuse F3 in electronics housing per
•
•
9.3.21 SB Htr Failure
Sample block heater could not reach final temperature.
Potential cause
Sample block heater circuit wiring open.
Rosemount OCX8800A
If open, locate and correct cause of overload.
If F3 is not open or if cause of overload cannot be found, replace
electronics package.
1. Check COe heater circuit for broken wire or loose connection per
9-2 and Figure 10-9.
2. Repair broken wire or loose connection.
1. Check resistance of COe heater per
Normal COe heater resistance is 97.7 Ohms.
2. Replace COe heater if heater is open or has a large resistance.
If open, locate and correct cause of overload.
If F3 is not open or if cause of overload cannot be found, replace
electronics package.
December 2022
Figure 9-1.
Figure 10-9.
Figure 9-1.
Troubleshoot
Figure
227