Hochiki America Corporation SPC-24 Installation Procedure Download Page 1

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Issued January, 2007

INSTALLATION PROCEDURE

FOR SPC-24

PHOTOELECTRIC

BEAM DETECTOR

Summary of Contents for SPC-24

Page 1: ...Issued January 2007 INSTALLATION PROCEDURE FOR SPC 24 PHOTOELECTRIC BEAM DETECTOR ...

Page 2: ...eration 12 2 6 3 Signal strength adjustment 13 2 7 Sensitivity check procedure 14 3 Maintenance 15 3 1 General 15 3 2 Visual check 15 3 3 Operation checks 15 3 4 Precautions for insulation resistance checking 15 3 5 Re initialisation after cleaning or re adjustment 15 4 Terminal layout and part designation 16 4 1 Emitter 16 4 2 Receiver 16 5 Summary of the SPC 24 s functions 17 5 1 Alarm signal ou...

Page 3: ...curs 21 8 3 2 Fault only 21 8 4 Detector generates fire panel does not register condition 22 8 5 Detector generates a fault panel does not register condition 22 9 Installation guide lines 23 9 1 General installation conditions 23 9 2 Installation in Saw tooth type ceilings 24 9 3 Installation in circular type ceilings 24 9 4 Installation in sloped ceilings 24 9 5 Installation in a monitor roof 25 ...

Page 4: ...ro processor is used as a reference for comparison with subsequent beam signals When there is sufficient difference between actual beam strength and stored reference data to indicate the occurrence of a fire then a fire signal is produced If an obstacle blocks the beam thus abruptly reducing the received beam level a fault signal is emitted The detector can be set to emit a fire signal after emitt...

Page 5: ...t due to changes in the building itself The spacing and siting in specific types of locations is covered in section 9 The beam detector must not be installed in the following locations Where the ceiling height is greater than 40m A roof top or place where open air circulates Where the distance between top and bottom of the space is less than 0 5m In locations where a large amount of dust fine powd...

Page 6: ...the locking mechanism located on the bottom left hand side of the detector housing Whilst pushing the locking mechanism with either a narrow rod or screw driver the detector is lifted upwards until it disengages from the mounting plate Mounting Plate Expanded View Detector Housing Expanded View Slide Down Locked Locking Screw Location Locking Screw Location side view Front Cover Hinge Mounting Pla...

Page 7: ...tor housing 2 4 Installation Refer to section 2 4 1 for installation details 1 Emitter 1 Receiver 2 Metal mounting brackets 1 Installation manual 4 Fixing screws 2 4 1 Installation option Before installation of the beam detector it will be necessary to determine which type of wiring method will be used for connection between the beam detector and the control panel It is possible to connect the bea...

Page 8: ...k of the detector through the hole so that they come out below the terminal connector The wires can be installed either behind the detector or from below the detector depending on the suitability of the installation If the wires are to come in from below then it will be necessary to break the knock out slot from the bottom of the detector body located near to the retaining clip Figure 4 Wiring met...

Page 9: ...ng for both methods are shown in the wiring diagrams Figure 6 and Figure 7 The receiver alone emits signals when there is a fire The emitter can therefore be equipped with a local power supply The wires should be pushed into the holes of the connector whilst the white push key is pressed with a small screwdriver This will enable the wire to push completely home Pull the wire to make sure that it i...

Page 10: ...l generally be necessary to include a resistor or other current limiting element in series with the relay contact Because the beam detector is powered by a separate line from the control panel it will be necessary to reset this power line to remove a fire condition from the beam detector The connections for the emitter and receiver are detailed below The terminal names are marked above the termina...

Page 11: ...he cover on the receiver will automatically synchronize the receiver with the emitter The level of the reception signal is automatically adjusted to initiate fire monitoring It takes about two minutes for fire monitoring to begin after the receiver cover is closed In the meantime take care not to block the beam Refer to section 4 for details of the position of the relevant parts on the detector wh...

Page 12: ...ed as a level meter for reception signals Turn the optical axis control to maximize the reception signal When synchronization is established with the emitter every push of the push switch for about five seconds will adjust the reception level automatically These LED s are small square LED s located in the main PCB and are located below the main alignment and status LED s refer to section 2 5 If th...

Page 13: ... the emitter or if the reception signal level is not successfully adjusted the fault lamp yellow alone will blink emitting a fault signal The status normal monitoring fault fire or other of the detector can be checked by the lamps on the receiver The lamps on the emitter do not change their condition with the status of the detector The status of the detector corresponds to the displays as indicate...

Page 14: ... come with an attachment so that they can be mounted to the Hochiki detector removal pole thus enabling testing of the filter from ground level SPB 24N filters have been designed as disposable test filters for testing the Hochiki SPB 24N or SPC 24 beam detector and have been manufactured from plastic First determine the sensitivity that the beam detector should be set to and then select the correc...

Page 15: ...sed 3 3 Operation checks Perform the sensitivity check function as defined in section 2 7 3 4 Precautions for insulation resistance checking If the wiring to a beam detector is to be tested for insulation resistance using a high voltage tester such as a Megger the wiring to the beam detector must be disconnected from the detector otherwise permanent damage of the detector may result 3 5 Re initial...

Page 16: ...Emitter Wiring Terminals Distance Setting Switches SW1 SW2 E2 E2 E1 E1 Signal Strength LED Red Light Beam Adjustment Screw Horizontal Light Beam Adjustment Screw Vertical Operating Indicator LED Green and Fire Indicator LED Red Alignment Setting LED Green Receiver Wiring Terminals Fault LED Yellow Sensitivity Switches SW1 SW2 Operation Setting Switches SW3 SW4 Signal Strength LED Yellow Push Switc...

Page 17: ...er adjustment re initialisation The beam detector will produce a fault after or during adjustment for one of the following reasons The receiver cover has been left open for three hours The cover of the receiver was closed but the sensitivity was left OFF The light level is too low reaching the beam The light level is too high reaching the beam The sensitivity has been set but the cover of the rece...

Page 18: ...equires that the signal seen by the receiver should be reduced by more than the amount of the sensitivity setting For example a sensitivity of 25 requires a reduction of the signal by 1 4 of its initial value to produce a fire The fault states to be manually recovered from are faults occurring during normal monitoring dimmed by more than 90 compensation limit reached and out of synchronization Sim...

Page 19: ...ellow LED s flash Normal operation Green LED flashes Monitor condition flash repetition time 1 per 3 seconds Minimum time needed to reset from fire 100msec Minimum time needed to reset from fault manual reset mode 100msec less than 7V in zone voltage Minimum time needed before beam can reset after fire produced 3seconds Installation temperature range 32 F to 100 F 0 to 37 8 Maximum humidity 95 R H...

Page 20: ... sensitivity falls within the sensitivity setting range recommended by the manufacturer in accordance with the monitoring distance See table 3 Sensitivity Setting Recommended by Hochiki Shall Alarm Shall not Alarm S1 25 S2 50 S3 70 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 60 70 80 90 100 Beam Span L m Light obscuration L Beam Span Recommended Sensitivity Light Obscuration Percentage 10 32...

Page 21: ... after reset When a fire has occurred there may be certain circumstances that will prevent the beam detector from resetting These are There is an obstruction of the optical path between emitter and receiver Ensure there is no obstruction The optical axis has been altered suddenly The beam will need re alignment The emitter has stopped working Check the voltage is present at the emitter Insufficien...

Page 22: ...ance switch of the emitter has been incorrect position The emitter is out of synchronization with the receiver To clear these conditions the set up and adjustment procedure should be repeated 8 4 Detector generates fire panel does not register condition The zone is incorrectly wired to the beam detector The wiring must be done in accordance with the relevant wiring diagram 8 5 Detector generates a...

Page 23: ...llowing diagram relates to the typical installation condition i e in a long straight area and details the siting positions of the beam detector H ceiling height h mounting height l1 side wall distance l2 back wall distance P distance between optical axes L distance between Emitter Receiver If H 26 feet use No 1 and No 2 locations If H 26 60 feet Consider locations 3 4 and 5 when possible For Detec...

Page 24: ...line B Figure 15 Installation in saw tooth shaped roofs 9 3 Installation in circular type ceilings The installation in a cylindrical or circular roofed building should be in accordance with In the case of the cylindrical roof position A or B for the detector s axis is acceptable Figure 16 Installation in circular shaped ceilings 9 4 Installation in sloped ceilings The installation for a sloped typ...

Page 25: ...he top part of the roof then the detector must be placed below the opening The detector should be installed in accordance with the following height restriction H a h 0 8H Figure 18 Installation in a monitor roof 9 6 Installation in corridors or aisles 9 6 1 Closed corridor When the detector is installed in a corridor with a closed corner it is possible to use just one detector as shown in Figure 1...

Page 26: ...sary to consider the adjoining area as a separate detection area Figure 20 Installation in an open corridor 9 6 3 Corridor with corners When the detector is installed in a corridor with a bend and an aisle as shown in Figure 21 it will be necessary to use at least 2 beam detectors to cover the corridors If the distance P is greater than 46 then another beam detector will need to be installed at po...

Page 27: ... be affected by a shutter or hanging wall The detector should be positioned such that it will be unaffected by moving objects The detector should not be installed in a roof top or place where open air circulates The detector should be installed where the distance between top and bottom of the space is greater than 1 7 The monitoring distance between the emitter and receiver is 32 8 to 328 and the ...

Page 28: ...ng beam detector installation Figure 22 Typical smoke patterns Hochiki America Corporation 7051 Village Drive Suite 100 Buena Park CA 90621 2268 USA Tel 714 522 2246 Fax 714 522 2268 Technical Support Tel 800 845 6692 Fax 714 690 7890 E MAIL technicalsupport hochiki com 2 8 000 2877 152 ...

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