- Check the tightness of the large nuts at each end of the flexible conduit that goes from the back of the main control cabinet to the 4 x 4 box on the underside of the table top (below the counter pedestal). Also check the tightness of the conduit connector in the main control cabinet and in the 4 x 4 box.
- See if this green and yellow terminal block is mounted tightly on the track. The screw in the middle of the block is the one that clamps the block to the track.
There should be a green wire from the left side of the “GND” terminal that attaches to the terminal block mounting track. - On later machines, there is a green ground wire attached to the terminal block mounting track that goes from that point, thru the conduit, thru the 4 x 4 box on the bottom of the table top, up through the counter pedestal, and to the ground terminal inside the counter enclosure (the terminal that the counter circuit board ground wire attaches to. We can supply this wire if you want us to do so. It will assure that the counter and table top remain securely grounded in the event that the metal conduit connectors become loose.
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