Sensor Adjustment - LEGRAND WattStopper WP-605 Installation Instructions Manual

SENSOR ADJUSTMENT

THE SENSORS ARE FACTORY PRESET* TO ALLOW FOR QUICK INSTALLATION IN MOST
APPLICATIONS. However, verification of proper wiring, coverage, sensitivity, and time delay
adjustments can be made through the following steps.
Sensitivity and Time Delay adjustments are both made under the sensor's front cover. Insert a
small flat-blade screwdriver in the slot of the front cover to open it.
Adjustment:
• Furnishings, carpeting or office structures can affect ultrasonic sensitivity and should be
installed before adjustment, if possible.
• Ultrasonic sensors should have their sensitivity adjusted when interference from air
movement is at its maximum. Override the HVAC and VAV systems to the maximum "ON"
position when making a sensor sensitivity adjustment.
1. Set the Sensitivity adjustment trimpot to about mid-range.
2. Set the Time Delay to 15 seconds for this testing procedure.
3. Move out of the controlled area – the lights will turn off in about 15 seconds from the last flash
of the red LED. If the LED continues to flash, the sensor is detecting some kind of movement.
Turn the Sensitivity adjustment trimpot down slightly (counterclockwise) and repeat this step
until the LED does not flash and the lights turn off.
4. Now walk into the controlled area. If the lights don't turn on, increase the Sensitivity slightly
(clockwise) and try again. Repeat this procedure until the lights come on when entering the
controlled area.
5. Also, if the lights turn off while the room is occupied, it may be necessary to increase the
Sensitivity slightly.
6. Set the desired Time Delay – 16 minutes works well for normal applications.
* Factory preset = sensitivity – 50% / Time Delay – 16 minutes.
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