Installation Guide

FV838 Rev. A 10/5/2023
Page 8
Sensor Range Adjustment (when necessary)
Toensureoptimalperformanceinvariousrestroomenvironments,
each ZER-TM is initially calibrated at the factory. However, in
situationswhere thereis lowlight orhighreectivity, itmightbe
necessary to make adjustments to the calibration distance of the
unit. This can be done using a Magic Magnet (P6900-AT-MAG).
Follow the steps outlined below to re-calibrate the ZER-TM using
a Magic Magnet (P6900-AT-MAG):
1.Standatthedesiredcalibrationdistance:
- ~28” from the sensor in a water closet application.
- ~22” from the sensor in a urinal application.
2. Place Magic Magnet to the right of the ZER-TM’s lens within
indicated area. Hold the Magic Magnet in that position until the
user LED lights up.
3. Maintain the position of the Magic Magnet until the user
LEDstartsblinking.Oncetheblinkingbegins,removethe
Magic Magnet and allow the user LED to blink 10 times while
remaining in the same position. A quick double-blink of the user
LED indicates that the calibration process is complete.
4.Toverifythenewcalibrationdistance,stepawayfromtheunit
for 5 seconds. Then return to the exact position at which it was
calibratedandobservetheuserLED.IftheuserLEDblinks,
it indicates that the calibration distance has been successfully
calibrated.
Note:Toensureproperfunctionality,makesurethecalibrationdistanceinwaterclosetapplicationspreventsthesensorfromdetecting
thestalldoor.Verifythisbyclosingthedoorfor10seconds,thenopeningit.Iftheushvalvedoesn’tactivate,thecalibrationdistanceis
suitable.Otherwise,recalibratetoacloserdistanceusingthemagnet.