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Fire Fighting Enterprises FIRERAY 2000 EExd Installation Manual

Hazardous area smoke detector

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FIRERAY 2000 EExd
Hazardous Area Smoke Detector
♦ KEY FEATURES
⇒ Flameproof Receiver and Transmitter
⇒ Standard Fireray Controller Unit
⇒ High Coverage - up to 1500
⇒ Low Cost
⇒ Beam Range 10 metres to 100 metres, in
normal use, 3m to 30 m retro operation.
⇒ 12 Volts dc to 24 Volts dc operation
⇒ Selectable Alarm Thresholds
⇒ Low Current Consumption
⇒ Manual or Automatic Fire Alarm Reset
⇒ Automatic Fault Alarm Reset
⇒ Ground Level Electronics
⇒ Extremely Rugged
⇒ Easy installation
⇒ Low maintenance
DESCRIPTION
The FIRERAY 2000 EExd SMOKE DETECTOR SYSTEM is designed primarily to protect EExd, IIB
hazardous areas.
It consists of a standard Fireray 2000 Controller/Analyser, combined with highly rugged flameproof
Transmitter and Receiver heads.
The Transmitter and Receiver Heads are designed to be mounted within the protected hazardous area,
whilst the Analyser is housed outside it. Using the Standard Analyser unit in this way allows a
significant cost reduction when compared to a system utilising flameproof enclosures for all
component parts. The maximum lateral beam coverage is 15m per Fireray System installed.
Once installed, the Transmitter Head projects a modulated Infra-Red Beam across the protected area, to
the Receiver head mounted opposite. The received signal strength is monitored and analysed in the
Ground Level Controller. Should the beam strength fall below the preset threshold for more than 8 -10
seconds, a Fire Alarm is signalled to the Control Equipment. The analyser also incorporates monitoring
for cable breaks or loss of function at the Transmitter or Receiver. If the signal strength is reduced
suddenly (<5 seconds) by greater than 93% a Fault Alarm is indicated to the Control equipment. The
Fire and Fault Alarm outputs are provided via two sets of Voltage-Free change-over relay contacts.
The Fire Alarm Relay may be set for latched or auto-reset operation as desired. The Fault Alarm is
designed to auto-reset once the signal is returned to serviceable limits.
The system may be used with 'intelligent' or 'non-intelligent' systems. Due to the very low current
consumption, back-up battery life is extended and the system may be powered from alarm loop
supplies in most cases.
1 x Transmitter Head (With Clear Lens)
1 x Receiver Head (With Dark Lens)
1 x Controller/Analyser Unit
1 x Adjustable Head Mounting Bracket
1 x Bag of Bracket Fixings
** See specification on page 13 for technical details

Installation Guide

♦ APPLICATIONS
⇒ Zone 1 Environments
⇒ Refineries
⇒ Mills
2
m per system
⇒ Munitions Factories
⇒ Munitions Stores
⇒ Flammable Liquid Stores
⇒ Flammable Gas Stores
⇒ Flammable Powder Stores
⇒ Industrial Plants
⇒ Power Stations
⇒ Warehouses
⇒ Applications requiring highly rugged

PARTS LIST

Page 1 of 14
detector heads
1 x Test Filter
1 x Installation Guide (This document)
1 x Atex Addendum Sheet 0600-(issue)
2 x Allen keys (5mm & 10mm)
23989.00.C (25.08.05)

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Summary of Contents for Fire Fighting Enterprises FIRERAY 2000 EExd

  • Page 1: Installation Guide

    ⇒ Easy installation ⇒ Low maintenance DESCRIPTION The FIRERAY 2000 EExd SMOKE DETECTOR SYSTEM is designed primarily to protect EExd, IIB hazardous areas. It consists of a standard Fireray 2000 Controller/Analyser, combined with highly rugged flameproof Transmitter and Receiver heads.
  • Page 2 FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide PRINCIPLE OF OPERATION General The Fireray system operates by passing an infra-red beam between a Transmitter and Receiver, through the protected area. The received signal strength will be attenuated if smoke is present in the beam.
  • Page 3 FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide Two possible actions are selectable, once the system has exhausted all compensation steps, as follows:- • Leave the COMP switch in the Controller unit OPEN for BS5839 installations (UK). This setting allows generation of a FIRE ALARM after reaching the compensation limit, even though a FAULT ALARM will be active.
  • Page 4 FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide • System unable to initialise following reset, due to inability to calibrate correctly (perhaps caused by interference or testing of the beam before expiry of the 50 second calibration period. • High or Low signal when Controller Unit’s RESET switch set to OFF (AGC locked out).
  • Page 5 FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide To achieve maximum EMI rejection, use screened cables for the system wiring, properly terminated at metal glands (Do not use screen pigtails). MICC cable is recommended. Use the correct EExd approved cable gland types for all system parts in the hazardous area.
  • Page 6 FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide installations, leave the ‘COMP’ switch open (Sets AGC operation at compensation limit - See functional descriptions on page 2). Check all wiring then apply power to all parts of the system.
  • Page 7 FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide system cabling to the 3 way terminal block on the internal pcb and Earth the unit housing in the same manner as used for the Rx (see wiring diagram on the following page for connections and earthing regimes).
  • Page 8 FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide • To check that the beam is being reflected by the prisms, rather than some other reflective surface, block off the beam completely at the prisms using a suitable non-reflective blind (sheet of black cardboard or similar).
  • Page 9: Non-Hazardous Area

    FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide Rx EXTERNAL CASE • Typical installation shown (See text). RELAY WIRING, EARTH (SEE TEXT) • Do not omit any Earth connections. CONNECT AS REQUIRED • MICC cable recommended for all cabling.
  • Page 10 FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide VIEW INSIDE TRANSMITTER UNIT WITH TOP WINDOW SECTION REMOVED SHOWING TERMINALS AND SETTINGS ETC note: some components not shown for clarity External Earth terminal will be found in one of these two positions...
  • Page 11 FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide VIEW INSIDE RECEIVER UNIT WITH TOP WINDOW SECTION REMOVED SHOWING TERMINALS AND SETTINGS ETC note: some components not shown for clarity External Earth terminal will be found in one of these two positions...
  • Page 12 FIRERAY 2000 EExd Hazardous Area Smoke Detector Installation Guide SINGLE BEAM MULTIPLE BEAMS SEE NOTE 3 15m MAX 30m MAX. OVER 30m 7.5m 7.5m 0.5m MIN. 0.5m MIN. A ceiling or roof with a slope in excess of 3.5 degrees should be regarded as an apex roof.
  • Page 13 FIRERAY 2000 EExd - SYSTEM SPECIFICATION SYSTEM TYPE SUPPLY CURRENT Transmitter (TX) Rugged for EExd IIB areas - IP67 Control/Rx (Normal) 7.5mA @ all ranges Receiver (RX) Rugged for EExd IIB areas - IP67 Control/Rx (Alarm) 13.5mA @ all ranges...
  • Page 14 Fire Fighting Enterprises Ltd. 9 Hunting Gate, Hitchin Hertfordshire SG4 0TJ England Tel: +44 (0) 845 4024242 Fax: +44 (0) 845 4024201 Email: sales@ffeuk.com www.ffeuk.com Page 14 of 14 ** See specification on page 13 for technical details 23989.00.C (25.08.05)