Process Technology Lufran LUF Series Manual page 47

Maintenance Procedures (Continued):
M2: Outlet Process Sensor, Column TC Sensor(s)
The outlet process temperature sensor is located in the TEE fitting directly before the outlet plumbing
connection. The column temperature sensor(s) are located in the top manifold of each heating column,
labeled COLUMN TC. These sensors should be checked for proper operation every 6 months.
Procedure M2-1: Outlet Process Temperature
Sensor, Column TC Sensor Inspection
Procedure:
1) If the unit is in LOCAL mode, press the
HEATER ON/OFF button to the OFF
position. If the unit is in REMOTE mode
disable the heater from the customer
supplied remote controller.
prevent the heaters from energizing.
2) Continue water flow through the unit for this
procedure. Allow the unit to cool to ambient
inlet temperature.
3) Open the rear cabinet door. Locate the outlet
process temperature sensor located in the
TEE fitting directly in front of the outlet
plumbing connection.
4) Disconnect the plug for the outlet process
temperature sensor. The heater will enter
alarm mode and the stack light (if provided)
will illuminate the red light.
5) Reconnect the plug for the outlet process temperature sensor. Press the ERROR RESET button on
the control display to clear the fault condition.
6) Locate the column TC sensor(s), located in the top of each heating column.
7) Disconnect the plug for the each of the column TC sensor. The heater will enter alarm mode and the
stack light (if provided) will illuminate the red light.
8) Reconnect the connector plugs for the column TC sensor. Press the ERROR RESET button on the
control display to clear the fault condition.
M-43-25
Revision - Date 03-01-04-18
This will also
46
Figure 35: Thermocouple Location
LUF-Series Lufran Manual
Standard outlet, Standard Interface