Trebor IQ Chemical Heater - Manual (Page 16)

PAGE 16 MODEL IQ CHEMICAL HEATER OPERATION / MAINTENANCE MANUAL
6.3 INTERLOCK SENSORS
ALARM CAUSES SOLUTIONS
Liquid Leak Liquid leak detected inside
heater housing
Sensor/wiring shorted or
improperly wired to
interlock
If liquid is present in the
housing, decommission
and replace heater per
Section 5.3.
Inspect/test sensor wiring.
Element Over-
Temperature
No liquid or insufficient
flow through the heater
Insufficient control settings
or scheme
Sensor/wiring shorted or
improperly wired to
interlock
Increase flow rate.
Modify control settings or
scheme to limit the
element to
≤250°C.
Inspect/test sensor wiring.
Liquid Over-Temperature Insufficient flow through
the heater
Insufficient control
algorithm
Sensor/wiring shorted or
improperly wired to
interlock
Increase flow rate.
Check for blockage.
Relocate outlet
temperature sensor
closer to heater outlet.
Adjust control settings or
scheme.
Inspect/test sensor wiring.
Liquid Level Insufficient liquid present in
heater
Liquid boiling
Sensor/wiring shorted or
improperly wired to
interlock
Increase flow rate.
Review liquid properties
vs. conditions.
Adjust sensor
Inspect/test sensor wiring.