Prv Sensor N 1 M7 - Process Technology LUFRAN Instruction

Maintenance Procedures (Continued):
M7:
PRV Sensor
There is one liquid sensor located at the outlet fitting for the PRV discharge. This is a
capacitive sensor.
months. If the sensor is out of adjustment, it may be re-calibrated. If it fails to re-
calibrate then it should be replaced.
Procedure M7-1: PRV Sensor Inspection Procedure:
1) If the unit is in LOCAL mode, press the DISABLE HEATER button on the command
panel of the OIP. If the unit is in REMOTE mode disable the heater from the
customer supplied remote controller.
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.
detector, just inside of the PRV outlet plumbing connection. The sensor is mounted
on a metal plate, above the PRV discharge tubing.
4) Place your finger between the sensor and the PRV discharge tubing. The red LED
on the back of the sensor will illuminate. When the red LED illuminates, the unit will
enter alarm mode.
ALARMS MENU on the touchscreen display will appear. The PRV alarm will flash
on the display.
5) Remove your finger from in between the sensor and the PRV discharge tubing. The
red LED on the back of the sensor should turn off.
6) Press the FAULT RESET button on the command panel of the touch screen display
to clear the fault condition.
7) If the red LED fails to illuminate and the unit fails to enter alarm mode, then the level
sensor must be recalibrated.
M-43-01
Revision - Date: 08 – 04/06/15
This sensor must be inspected for proper adjustment every 6
The PRV sensor is located next to the cabinet leak
The red light on the top of the unit will illuminate and the
This will also prevent the heaters from
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Lufran Single Outlet Manual