Process Technology LUFRAN Instruction page 71

Maintenance Procedures (Continued):
Procedure M1-3: Liquid Level 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.
3) Open the rear cabinet door. Locate the liquid level sensor to be replaced.
4) Disconnect the connector plug for the liquid level sensor.
5) Loosen and remove the two nuts that are holding the liquid level sensor in the
bracket.
6) Slide the liquid level sensor out of the bracket.
7) Insert the new liquid level sensor into the bracket. Attach and tighten the two nuts
on the liquid level sensor to fix its position.
8) Make sure that the position of the liquid level sensor is 3.5mm (0.125-inches) away
from the outlet plumbing manifold. If necessary, adjust and re-tighten the two nuts to
adjust the sensor position.
9) Restore power to the unit.
10) Perform procedure M1-2: liquid level sensor calibration procedure and then M1-1:
liquid level sensor inspection procedure, provided on the previous two pages.
11) If the sensor passes the inspection, the unit may be restarted and returned to
service.
M-43-01
Revision - Date: 08 – 04/06/15
Verify that the electrical supply is shut off, and
any necessary lockout/tagout devices are
properly installed.
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Lufran Single Outlet Manual