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Section 8: Service
Description Alarm Abort Condition Lo Limit Hi Limit Alarm Message (HMI) Comments
High Humidity x
Aeration
time > 30
sec
21% High Humidity
Checked after 30 seconds of
aeration. Temperature must be at
high level for 1 sec.
Possible Cause: Air pump failure,
humidity sensor failure.
Heater Tube 'High' Temp x 425 ºC
Heater Tube Thermo-
couple Hi Failure
Abort after 1 second. Possible
Cause: Excessive deposit on
heater tube, Heater tube thermo-
couple failure.
Bus Bar 'High' Temp x 80 ºC Bus Bar Temp > 80 C
Abort after 1 second.
Possible Cause: Cooling system
failure, Thermocouple not in-
stalled properly.
Bus Bar 'High' Temp x 60 ºC Cooling System Failure
Abort after 1 second.
Possible Cause: Cooling system
failure, Thermocouple not in-
stalled properly.
System 'Low' Pressure x Test active 3.1 Mpa Low System Pressure
Abort after 1 second.
Possible Cause: Pressure leak,
inlet valve failure.
System 'High' Pressure x Test active 3.8 Mpa High System Pressure
Abort after 1 second.
Possible Cause: tubing blockage,
pressure sensor failure.
Heater Tube Temp De-
viation
x Test active
≤ 2.5 ºC
from set-
point
≥ 2.5 ºC
from set-
point
Heater Tube Temp Out
of Range
Temperature must be 'outside' of
limits. Abort after 3 seconds.
Possible Cause: Thermocouple
failure, excessive buildup on
heater tube.
Heater Tube Temp Ther-
mocouple Failure
x Test active -100 ºC
Heater Tube Thermo-
couple Lo Failure
Abort after 1 second.
Possible Cause: Thermocouple
failure, Thermocouple not con-
nected.
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