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M-43-25
LUF-Series Lufran Manual
Revision - Date 03-01-04-18 Standard outlet, Standard Interface
Engineering Information (Continued):
Alarms:
The following section describes each of the alarm conditions that may occur on the LUF-series Lufran
fluoropolymer inline water heater.
Alarms
Menu
Alarm History Menu
Description
Ground Fault Ground Fault
A ground fault has occurred somewhere in the unit. This may
be caused by a failed component. The cause of the ground
fault must be identified and corrected before the heater is reset.
Col #
Overtemp
(1-4)
Column # Overtemp
The water temperature inside the heating column has risen
above the setting of the associated SLC module in the SLC
CONFIGURATION display. This may be caused by lack of
water flow, a failed SSR or a failed sensor.
When the element temperature falls below the setting of the
SLC module, the unit can be reset.
Element #
Overtemp
(1-4)
Element # Overtemp
The element temperature has risen above the setting of the
associated SLC module in the SLC CONFIGURATION display.
This may be caused by lack of water flow to the unit, a failed
SSR or a failed t/c sensor.
When the element temperature falls below the setting of the
SLC module, the unit can be reset.
Outlet TC
Open Circuit
Process Sensor
Disconnected
The outlet process temperature sensor has failed (open). The
process temperature sensor must be replaced. This may also
be caused by a disconnected sensor connection.
Element #
TC Open
Circuit
(1-4)
Element # Sensor
Disconnected
The element over-temperature sensor has failed (open). The
sensor must be replaced. This may also be caused by a
disconnected sensor connection.
PLC Battery
Fault
PLC Battery Fault
The backup battery for the PLC is measuring low-voltage or has
lost it’s charge. The battery must be replaced.
PLC Comm.
Fault
Communication Error
PLC communications to the ADAM module, TC1 module or
SLC modules has been interrupted. Check modules for power
or disconnected wiring.
PRV Fault
Pressure Relief Valve
The liquid sensor mounted in the pressure relief valve (PRV)
discharge tube has detected liquid in the discharge tube. This
is caused by high water pressure applied to the unit. This may
be caused by inlet water pressure exceeding 6.9 bar (100 psi).
When the water pressure drops to an acceptable level and the
PRV closes, the unit can be reset.
Column # TC
Open Circuit
(1-4)
Column # Sensor
Disconnected
One of the column TC sensors has failed (open). The sensor
must be replaced. This may also be caused by a disconnected
sensor connection.
Humidity
Fault
Humidity Fault
There is moisture detected in the humidistat connected to the
purge gas outlet of the heater. This may be caused by a
ruptured tube or a leaking seal in the heating column, or a
normal heater response following an extended shutdown
period.
In most cases this leak can not be repaired and the heating
column must be replaced. If restarting the heater following an
extended shutdown period, exhaust the purge gas for 8-hours
before attempting to reset the unit.
Содержание Lufran LUF Series
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