Process Technology Lufran LUF Series Manual page 32

Engineering Information (Continued):
Alarms (Continued):
Alarms Alarm History Menu
Menu
SSR Fault SSR Heatsink Fault
Liquid Level
Liquid Level fault
Fault
Purge Fault Purge Fault
Leak Fault Leak Fault
Flow Meter Flow Meter Sensor
OC Disconnected
Inlet TC
Inlet Sensor Disconnected
Open Circuit
Remote
Setpoint Remote Input Open Circuit
Open Circuit
M-43-25
Revision - Date 03-01-04-18
Description
The thermostat on one of the head sinks for the SSRs has
tripped, indicating a high temperature on the heat sink.
This may be caused by a malfunctioning fan, high ambient air
temperature, inadequate air circulation through the cabinet, or a
tripped power fuse in the unit.
The cause of this alarm must be identified and corrected before
the unit can be reset.
The liquid level sensor at the top of plumbing does not detect
liquid in the outlet tube of the unit. The system is disabled until
the liquid level sensor detects liquid in the outlet tube of the
heating column. This may be caused by a lack of water to the
unit.
This safety will prevent catastrophic overheat damage to the
heating column. The cause of the liquid level fault must be
identified and corrected before the unit can be reset.
The purge gas pressure switch does not detect adequate purge
gas pressure. The unit has been disabled to prevent heater
failure. This may be caused by shutting off the purge gas
supply to the unit.
When the purge gas pressure is at an acceptable pressure, the
unit can be reset.
The optional cabinet leak detector has detected liquid in the
bottom of the cabinet. The source of the liquid needs to be
identified and repaired.
The flow meter has suffered a fault and should be replaced.
The inlet temperature sensor has failed (open).
temperature sensor must be replaced.
caused by a disconnected sensor connection.
The 4-20mA input signal for the remote setpoint is not present.
This alarm is disabled when the unit is in LOCAL or MANUAL
control modes.
31
The inlet
This may also be
LUF-Series Lufran Manual
Standard outlet, Standard Interface