Appendix A
Troubleshooting tips are provided here as a beginning point in correcting start-up issues
and clearing out alarm and trip events.
High Temperature Reading/Alarm
The following summarizes some of the possible causes and solutions for heat tracing
high temperature alarms.
Cause
Possible Solutions
Temperature of product in process line is
above alarm set point or the expected read-
ing due to events other than heat tracing -
high processing temperatures, steam-outs,
etc.
Let process return to normal condition or ad-
just alarm set point (if approved by project
engineer) to allow for this processing condi-
tion.
High alarm setting programmed or expected
reading did not consider natural tempera-
ture overshoot associated with the control
scheme.
Move control set point down to allow for
overshoot or raise the high temperature
alarm set point (if approved by project en-
gineer). It may also be possible to decrease
the control band on the control circuit or ad-
just the type of control from on-off to propor-
tional.
31
PN 50312_0414
Summary of Contents for TraceNet TCM18
Page 32: ...9 Notes 29 PN 50312_0414 ...
