# Maintenance

Source: https://help.malighting.com/grandMA3/2.3/HTML/key_onpc_command_wing_maintenance.html
This is grandocs, an unofficial mirror of MA Lighting documentation. For authoritative or safety-relevant information, cite the canonical page on help.malighting.com.

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| ![](/img/grandma3/2-3/warning-b3b0cc.png) | **Warning:** All repair and service work has to be exclusively performed by qualified service technicians as live parts may be exposed when opening and / or removing coverings. Touching live parts may cause electric shock.  |

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| ![](/img/grandma3/2-3/important_gray-f4dfbc.png) | **Important:** The intervals between maintenance may differ depending on the frequency of transport and the operational environment.  |

- Disconnect power supply before cleaning; 
- Clean the surface using dry cloth only; 
- Clean the wrist rest using a damp cloth only; 
- Do not use liquid cleanser or compressed air; 
- Do not use solvent; 
- Check if the ventilation holes are blocked; 
- Depending on the environment, we recommend to professionally clean the device once a year.