Intrinsically Safe Radio Information; Fmrc Approved Equipment - Motorola Expert Series Basic Service Manual

Chapter 2

Intrinsically Safe Radio Information

2.1

FMRC Approved Equipment

Anyone intending to use a radio in a location where hazardous concentrations of flammable 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
[classified] 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 ("Class Number 3605").
FMRC Approval labels are attached to the radio to identify the unit as being FM Approved for
specified hazardous atmospheres. This label specifies 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:
WARNING: Do not operate radio communications equipment in a hazardous atmosphere
! !
unless it is a type especially qualified for such use (e.g., FMRC Approved). An explosion
or fire may result.
W A R N I N G
WARNING: Do not operate an FMRC Approved Product in a hazardous atmosphere if it
has been physically damaged (e.g., cracked housing). An explosion or fire may result.
WARNING: Do not replace or charge batteries in a hazardous atmosphere. Contact spark-
ing may occur while installing or removing batteries and cause an explosion or fire.
WARNING: Do not replace or change accessories in a hazardous atmosphere. Contact
sparking may occur while installing or removing accessories and cause an explosion or
fire.
WARNING: Do not operate an FMRC Approved Product unit in a hazardous location with
the accessory contacts exposed. Keep the connector cover in place when accessories are
not used.
WARNING: Turn a radio off before removing or installing a battery or accessory.
WARNING: Do not disassemble an FMRC Approved Product unit in any way that exposes
the internal electrical circuits of the unit.
Radios must ship from the Motorola manufacturing facility with the hazardous atmosphere capability
and FM Approval labeling. Radios will not be "upgraded" to this capability and labeled in the field.
FM
APPROVED
2-1