Veris Technologies 3150 Soil EC Mapping System - Trouble-shooting - Manual (Page 10)

cable, causing channels to short out. Or, one of the coulter-electrodes is no longer
insulated properly from the frame or adjacent coulter-electrodes.
1. If EC readings do not drop to –1 when unit is raised, disconnect signal cable
extension from implement. If readings don‘t drop to –1, the problem is with the
signal cable extension. If readings show -1, re-insert the signal cable extension into
the implement. Disconnect the sure-seal terminal connector wire from each coulter
electrode. If readings don‘t drop to –1, the problem is with the wiring harness. If this
is the case, you should replace the wiring harness. If readings do drop, re-insert the
signal cable extension into the implement. The problem is with one or more of the
coulter-electrodes. Proceed as follows:
sure-seal pin
sure seal socket
Figure 3.8
2. Inspect nylon insulation slides under coulter-electrode mounting brackets. These
nylon insulators may become worn or brittle, or may slip out from under mounting
bracket. Repair and replace as necessary. Make sure that all electrode coulter U-
bolts are properly tightened to clamp mounting bracket and insulation tightly to
frame.
nylon insulation
Figure 3.9
3. Disconnect signal cable from instrument or front of frame. Check so see that no
metal part of the any coulter electrode is in contact with the implement frame. This
may be by visual inspection or by connecting one lead of an ohmmeter to the