LELY Lely Discovery 90 SW, Operator'S Manual

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7-6 Test and Adjustment
5. Examine the value of the signal of the machine.
•
0 = very good
• -20 - -25 = poor
• < -25 = very bad
7.3.6 Test the Ultrasonic Sensor
Test
Figure 56. Test the ultrasonic sensor
1. Manually drive the machine to a location more than 6 m (6.6 yrd) from a wall (see Manually drive the
Machine on page 5-6).
2. Make sure no object is between the ultrasonic sensor and the wall.
3. In the main menu of the Lely Control app, select Test and push .
4. Select Ultrasound and push .
5. If the ultrasonic sensor is on the left, push soft button L , else push R .
6. Make sure the machine is between you and the wall.
Make sure not to interrupt the sensing beam while turning the wheel.
7. Monitor the display of the user interface while you turn the sensing wheel.
8. Make sure the Pulse 1: mm , Pulse 2: mm , Pulse 3: mm and Filter: mm values are 0, when the wheel is
rotating.
9. If the values are not 0, clean the ultrasonic sensor with a tissue.
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