NEC EXPRESS 320Lb-R - Manual (Page 25)

Precautions for Use 1-11
CAUTION
Do not use any non-designated interface cable.
Use only interface cables designated by NEC; identify which component or
connector to attach beforehand. If you use a wrong cable or make a wrong
connection, there is a risk of short-circuit that could lead to a fire.
You also have to observe the following prohibitions about handling and
connecting interface cables:
Do not use any damaged cable connector.
Do not step on the cable.
Do not place any object on the cable.
Do not use the equipment with loose cable connections.
Do not use or store this product in corrosive environment.
Avoid the usage or storage of this product in an environment which may be
exposed to corrosive gases, such as those including but not limited to :
sulfur dioxide, hydrogen sulfide, nitrogen dioxide, chlorine, ammonia and/or
ozone.
Avoid installing this product in a dusty environment or one that may be exposed
to corrosive materials such as sodium chloride and/or sulfur.
Avoid installing this product in an environment which may have excessive metal
flakes or conductive particles in the air.
Such environments may cause corrosion or short circuits within this product,
resulting in not only damage to this product, but may even lead to be a fire
hazard.
If there are any concerns regarding the environment at the planned site of
installation or storage, please contact your sales agent