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THE FOLLOWING ITEMS, FUNCTIONS AND OPTIONS DESCRIBE THE FM APPROVAL:
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Explosion-proof for Class I, Div. 1, Groups B, C and D (T5) Hazardous (Classified) Locations per FM 3615.
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Dust-ignition proof for Class II/III, Div. 1, Groups E, F and G (T5) Hazardous (Classified) Locations per FM 3615.
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Nonincendive for Class I, Div. 2, Groups A, B, C and D (T3) Hazardous (Classified) Locations per FM 3611.
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Nonincendive for Class II, Div. 2, Groups F and G (T3) Hazardous (Classified) Locations per FM 3611.
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Enclosure rating NEMA Type 4X per NEMA 250.
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Ambient Temperature Limits: –40°F to +167°F (–40°C to +75°C).
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Automatic Fire Alarm Signaling Performance verified per FM 3260 (2000).
The following performance criteria were verified:
OpTICAL INTEGRITY TEST:
The detector generated an optical fault in the presence of contamination on any single or combination of lens surfaces
resulting in a loss of approximately 50% of its detection range, verifying that the detector performs a calibrated
Automatic Optical Integrity (o i ) test for each sensor. Upon removal of the contamination, the detector fault was cleared
and the detector was verified to detect a fire.
The Manual / Magnetic o i performs the same calibrated test as the Automatic o i , and additionally actuates the alarm
relay to verify output operation. If there is a 50% loss of its detection range, an alarm signal is not generated.
4.3
aPPENDIX a
FM Approval and performance Report
22
95-8555
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