M-43-01
Lufran Single Outlet Manual
Revision - Date: 08 – 04/06/15
- 74 -
Maintenance Procedures (Continued):
Procedure M2-2: Inlet Process, Outlet Process or Column TC Sensor
Replacement Procedure:
1) Press the DISABLE HEATER button on the OIP to allow the unit to cool to ambient
inlet temperature. This will also prevent the heaters from engaging.
2) Turn OFF Power to the unit.
Verify that the electrical supply is shut off, and
any necessary lockout/tagout devices are
properly installed.
3) STOP flow of water to the unit and drain column assembly. A provision for draining
the unit must be installed on the inlet plumbing when the unit is installed. If not
method of draining the unit was provided, the inlet water connection must be
removed. Apply lockout-tagout as required by your facility.
4) Open the rear cabinet door. Locate the sensor to be replaced.
5) Disconnect the 4-pin connector plug for the sensor.
6) Loosen the 1/8-inch fitting and remove the sensor from the fitting.
7) Insert the new sensor until the black label reaches the top of the 1/8-inch
compression nut. Tighten the fitting.
8) Attach the 4-pin connector plug.
9) Close the drain and allow water to flow through the unit. Check for leaks. If the
fitting is not leaking, the unit may be restarted.
