Panasonic NM-EJW2A Operating Instructions Manual page 16

Avoid storing it in the place where oil or an organic solvent is splashed.
Otherwise, rubber and resin parts may potentially be deteriorated and broken.
EJW2A-AA
Avoid bumping or knocking it down.
Even if there is no damage on the surface, actions can be affected.
EJW2A-AA
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Oil
EJW2A-E-OMA00-A04-00