NEC ND-71762(E) system manual Thinner

PRODUCT LIABILITY

ATTENTION

Do not use benzine, thinner, and alcohol for cleaning. When it is difficult to clean dust and dirt, put weaken neutral detergent onto a cloth, and give the cloth a wiring. Clean dust and dirt with the cloth, and rub them with a dry cloth.

Thinner

Do not place equipment in the following:

Locations which receive direct sunlight

Locations where the moisture exceeds the allowed level

Locations which might be wet with water, oil, and chemicals

Locations which is particularly low in temperature (such as an ice compartment)

Locations which receive the electric wave or the magnetism from TV and (two-way) radio

Locations which receive the illegal electric wave

Note that the life of PBX and Main Power is shorten if placed in the location affected by much of hydrogen sulfide or salt, such as seaside area.

2.2 Notice Regarding Lightenning Strikes

WARNING

It is necessary to take proper procedures to avoid damage to the PBX caused by local lightening strikes and other electrical surges.

As for grounding conductors, there needs to be two-type grounding conductors; one is below 10 Ω (Type 1) and the other is below 100 Ω (Type 2). In particular, the Type 1 is used for the electronics circuit installment, therefore, it must be used as isolated system to keep from electricity difference caused by lightening strikes.

The Type 1 is used when connecting the FE of PBX, the PE of Main Power, MDF, etc.

Extract the ground terminal (grounding electrode of three terminals) from the earth board same with that of the main equipment. The ground terminal attached with AC100V plug outlet is used for MAT, printer, MODEM, and measurement machine for maintenance.

PRODUCT LIABILITY ND-71762 (E)

PL- 6

Issue 2