NEC MC2400 - Manual (Page 16)

xiv Using This Guide
Care and Handling
Use the following guidelines to properly handle and care for your system.
Protect the system from extremely low or high temperatures. Let
the system warm (or cool) to room temperature before using it.
Keep the system away from magnetic forces.
Keep the system dry. Do not wash the system with a wet cloth or
pour fluid into it.
Protect the system from being bumped or dropped.
Check the system for condensation. If condensation exists, allow it
to evaporate before powering on the system.
Keep the system away from dust, sand, and dirt.