Motorola Solutions Inc. 89FT4844 ユーザーズマニュアル

 

Anyone intending to use a radio in a location 
where hazardous concentrations of ßammable 
material exist (hazardous atmosphere) is 
advised to become familiar with the subject of 
intrinsic safety and with the National Electric 
Code NFPA 70 (National Fire Protection 
Association) Article 500 (hazardous [classiÞed] 
locations).
An Approval Guide, issued by Factory Mutual 
Research Corporation (FMRC), lists 
manufacturers and the products approved by 
FMRC for use in such locations. FMRC has 
also issued a voluntary approval standard for 
repair service (ÒClass Number 3605Ó).
FMRC Approval labels are attached to the 
radio to identify the unit as being FM Approved 
for speciÞed hazardous atmospheres. This 
label speciÞes the hazardous Class/Division/
Group along with the part number of the 
battery that must be used. Depending on the 
design of the portable unit, this FM label can 
be found on the back or the bottom of the radio 

housing. The FM Approval mark is shown 
below:

 

¥Do not operate radio communica-
tions equipment in a hazardous 
atmosphere unless it is a type 

especially qualiÞed for such use (e.g., 
FMRC Approved). An explosion or Þre may 
result.

¥

Do not operate an FMRC Approved Product 
in a hazardous atmosphere if it has been 
physically damaged (e.g., cracked hous-
ing). An explosion or Þre may result.

¥

Do not replace or charge batteries in a haz-
ardous atmosphere. Contact sparking may 
occur while installing or removing batteries 
and cause an explosion or Þre.

 

¥Do not replace or change acces-
sories in a hazardous atmosphere.