723PLUS Digital Speed Control Caterpillar

Electronic equipment is sensitive to static. Some components are more sensitive than other components. In order to protect these components from static damage, you must take special precautions.

Use the following precautions to help reduce static electricity when you work with the control or near the control.

1. Before doing maintenance on the electronic control, discharge the static electricity from your person. Touch a grounded metal object or hold onto a grounded metal object in order to discharge static electricity.

2. Synthetic fibers tend to build up static electricity. Avoid wearing synthetic clothing. Wear cotton or cotton blended materials as much as possible because these materials do not store electric charges as much as synthetic fibers.

3. Keep the following materials away from the control module and the work area: plastic, vinyl and styrofoam. The following items are examples of products that need to be avoided: plastic cups, styrofoam cups, cup holder, cellophane wrappers, books with vinyl, folders with vinyl, plastic bottles and plastic ashtrays.

4. Unless it is necessary, do not remove the printed circuit board from the control cabinet. If you must remove the board from the control cabinet, follow these precautions:
   • Do not touch any part of the printed circuit board except the edges.

   • Do not use your hands to touch these parts: electrical conductors, connectors and components with conductive devices.

   • Circuit boards are shipped in protective packaging that resists static buildup. When you replace a printed circuit board, store the new board in the protective package until you are ready to install the new board. Immediately after you remove the old board from the control cabinet, place the board in the protective package.