In order to prevent an electronic component or unit from getting damaged additionally by electrical discharge during disassembly and shipping, always comply with the precautionary measures described in IEC 61340‑5‑1, IEC 61340‑5‑2, and IEC 61340‑4‑1:

1. Always assume that all electronic components and assemblies are endangered by electrostatic discharge (ESD). Humans only notice discharge events starting from a level of approximately 3000 volts. However, sensitive electronic components can already be damaged by much smaller voltages.
2. Store and transport ESD-sensitive components in ESD protective containers. The original packaging of the unit would be ideal. The next best thing, if you use the HEIDENHAIN Service Exchange, is the packaging of the exchange unit. In all cases avoid electrostatically chargeable plastic material, such as:
   • Common plastic wrap or bubble wrap
   • Common polystyrene filler material
   • Common synthetic fiber fabrics
3. Ensure during handling the proper grounding of the working area (e.g. tool, workbench, packaging) and the person. The illustration below shows a suitable working area
   

   Wristband with 1 Mohm grounding cable for grounding the person Grounded connection for wristbands, floor mats, table mats, etc. for equipotential bonding Dissipative shoes Dissipative flooring or floor mat

4. Inspect the ESD protection system regularly for proper functioning, and also pay attention to national safety regulations

Any questions regarding the packaging of your HEIDENHAIN products for return shipments will gladly be answered by HEIDENHAIN Service personnel or your regional HEIDENHAIN agency.