Troubleshooting
21
P/N: 1001547-01
5. If using stringline, verify that the line is not bouncing.
Sonic Tracker Picks Up the Ground, but Does Not Pick Up a Stringline
Solution:
1. To verify if the Tracker detects the stringline, set up the Tracker at least 16 inches over the stringline, then pull up on
the stringline slowly, and verify that the sensor reading on the Control Box’s Control Screen immediately changes.
2. Verify that Tracker is at least 14 inches above the stringline.
3. Smooth, steel wire is not recommended. Use minimum 1/16 inch diameter string for elevated stringline or
averaging ski. Use 1/8 inch string for surface stringline.
4. If using an ST-3, make sure the Sonic Tracker 3 is set to Stringline in the Control Box’s Performance
Menu and that the ST-3 is aligned with the stringline.
Tow Point Cylinders Moving too Fast or Too Slow (Strange Valve Response)
Solution:
1. Check that the machine power is on and all switches for automatic control on the machine are in the proper position.
2. Check that all cables are properly and securely connected to the Control Box and the machine.
3. Disconnect cables and inspect them for damage or contamination. Clean all connections with an electrical
contact cleaner.
4. Check that Trackers are between 14 and 24 inches from reference.
5. If there are gusty winds, lower Tracker closer to reference. Approximately 14 to 16 inches.
6. Check that the Valve Offsets are set correctly.
7. Check that the Elevation Gain and Slope Gain are set correctly.
GC-35_QRG.book Page 21 Tuesday, January 31, 2017 3:43 PM
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