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EuropeanSafetySystemsLtd. Impress House, MansellRoad, Acton, LondonW37QHsales@e2s.com Tel:+44 (0)2087438880
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DocumentNo. IS2425-PIssueB17-04-02Sheet2of4
The units shouldbesecurely bolted toasuitablesurface using
the 7mm diameterboltholesin thestainlesssteelUshaped
mountingbracket(seefigure1). The angle canthen be
adjusted in the directionthat the messageisprimarily required
tocover. Thiscan beachievedbyloosening the two large
bracketscrews in theside of the unit,which allowadjustment
in steps of 18°. Oncompletion of the installation the two large
bracketadjustment screwsontheside of the unit mustbe fully
tightenedto ensurethat theunit cannot moveinservice.
7) SafetyWarning (ElectrostaticHazard)
The acoustic horn sectionis made of ABSPlastic,thereforeto
avoidapossibleELECTROSTACTIC CHARGEthe unitmust
only be cleanedwith a damp cloth.
8) Access totheFlameproofEnclosure
In order to connecttheelectrical supplycablesandto recorda
messageontotheunits,itisnecessary toremovethe
flameproof cover togain accessto theflameproof chamber. To
achieve this removethe four M6 hexagonsocket head screws
(seefigure 2)and withdrawtheflameproofcovertaking
extremecarenottodamagetheflameproofjointsin the
process.
Notethefour M6screwsareClassA4-80stainlesssteel
andonlyscrewsof thiscategorycanbeused on these
units. Itis thereforeimportant thatthesescrews and their
springwashersarekept in a safe place duringinstallation.
Oncompletionofthecable wiringinstallationtheflameproof
jointsshouldbe inspectedto ensurethat theyarecleanand
thatthey havenotbeen damagedduringinstallation.Also
checkthat theearthbondingwirebetweenthetwocasting
sectionsissecureandthe‘O’ringseal isinplace.When
replacingtheflameproof cover casting ensurethat itis square
withthe flameproof chamber castingbefore inserting. Carefully
pushthecoverin placeallowing time fortheairto beexpelled.
Only afterthecover isfullyin placeshould the four M6
Stainless SteelA4-80 coverbolts and theirspringwashers be
insertedand tighteneddown. If the coverjams while it is being
inserted, carefully remove it andtryagain.Never use the cover
boltsto forcethe cover intoposition.
9) PowerSupplySelection
Itis important that asuitable powersupplyisused torunthe
Appello’sandthat thecables usedto connecttheunits tothe
powersupply areselectedtoensurethat theyhavethe
necessary capacity.
The followingtableshowstheinputcurrent taken by the
various sounderunits:-
UnitTypeInputInputMax.
VoltageCurrentI/PVolts
BExA120D24VDC 480mA30V
BExA120D230VAC45mA253V
BExA120D115VAC90mA126V
BExA110D24VDC 480mA30V
BExA110D230VAC45mA253V
BExA110D115VAC90mA126V
The input currentwillvaryaccordingtothe voltage inputlevel
and the frequencyofthe toneselected.Thecurrent values
shown abovearefor the554/440Hz tone @nominalinput
voltage. The above tablealso shows the maximum voltages at
which theunitscan beoperated.
10) CableSelection
Whenselecting the cable size consideration mustbegivento
the inputcurrentthat each unitdraws (seetableabove), the
numberofunits onthelineandthelengthofthecableruns.
The cablesizeselected musthavethe necessary capacity to
providetheinputcurrenttoalloftheAppello’s connected to
the line.
SAFETY WARNING: If the Appello’s are used athigh ambient
temperatures,i.e.over +40ºC, thenthecableentry
temperature mayexceed +70ºCand thereforesuitable heat
resisting cables mustbeused,witharatedservice
temperature of at least 95ºC.
11) Earthing
Both AC andDCAppellounitsmustbeconnectedto agood
qualityearth. The units are provided with internal and external
Figure 1
Chamber
Cover
Terminal
Pleasesee SafetyWarning
inSection 7of thismanual