Veris-technologies OpticMapper - Operating Instructions Manuel d'utilisateur télécharger pdf (Page 43)

Pub.# OM17-OpticMapper

6-9

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.

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 individual coulter electrode, and

the other to a grounded fastener on the frame. If the coulter electrode is properly isolated,

no reading will be obtained. Make sure that all electrode coulter clamp bolts are properly

tightened to prevent lateral movement of the coulter electrode.

Figures 3.10 a and b

4. Wet soil on the toolbar could be a pathway for the EC signal to short. Test coulter-to-coulter

and coulter-to-frame isolation by checking resistance between coulter-electrodes. Any

continuity from one coulter to another is not acceptable. Remove buildup of wet soil,

especially if is bridges across insulation slides. It may be necessary to remove coulter

mounting brackets and clean toolbar, if problem persists.

Figure 3.11 Wet soil buildup on toolbar may cause EC

signal to short.

continuity

grounded

bolt

coulter

terminal

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Veris-technologies OpticMapper - Operating Instructions Manuel d'utilisateur Page 43