Omron NSA Manual page 14

Turn OFF the power supply before doing any work on the product.
Do not touch the product case or the heat dissipation panel on the rear surface of the
case while the power supply is turned ON because they become very hot.
Also, turn OFF the power and wait for the product to cool down before doing any
maintenance work on the product.
When turning OFF the power supply, either turn OFF the external input power supply
or disconnect the power supply input connector.
The NSA-series Industrial PC must be installed within a control panel.
Use a control panel that meets or exceeds Type 1 enclosure standards.
Maintain appropriate environmental conditions.
Use the NSA-series Industrial PC in an environment with a pollution degree of 2 or
better.
Do not connect the NSA-series Industrial PC directly to a commercial power supply.
Supply power through an isolation transformer with a capacity of 200 VA max.
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