Cengar JSZ User manual


ECDeclaraonofConformity



Cengar.Ltd.
SpringfieldWorks,SaddleworthRoad
Halifax,EnglandHX48LZ



Wetheundersigned,declareunderoursoleresponsibilitythatthe
followingapparatus:‐

Machinedescripon:CengarAirSaw
MachineType: JSZ

IsinconformitywiththefollowingrelevantEClegislaon:

MachineryDirecve 2006/42/EC
AtexDirecve 94/9/EC

BasedonthefollowingHarmonisedStandards:

EN13463‐1:2009

Andthereforecomplieswiththeessenalrequirementsofthose
direcves.




AddionalInformaon:

ATEXCoding II2GT5
CerficateNo. TRAC09ATEX21236X
TechnicalFileNo.CEEX‐0803


AuthorisedSignature:
Date:   15/12/09
TitleofSignatory: GeneralManager‐CengarLtd.

SPECIFICATIONS
Speed
Stroke
AirConsumpon
AirPressure
Weight
Length
Height
Width
VibraonLevelaveraged
SoundPressureLevel
SoundPowerLevel
400/600strokesperminute
57mm
0.168m3/minute
5‐6Bar
5.5Kgs.
448mm.
141mm.
54mm.
1.38m/s2
80.5 db.
89.9 db.
CengarAirSawModelJSZ
Werecommendnormalsafeworkingpracces
shouldbefollowedaspertheHealthandSafetyat
WorkAct,ortheappropriateNaonalandState
Laws.Werecommendthateyeproteconbeworn

CENGARSAWS

arehandheldreciprocangsawsdesignedtocutmetalsandplascsin
produconenvironmentsandcanbeusedinAtexzonedareaswhere
appropriate.Theyshouldonlybeusedbytrainedoperatorswhoare
responsibleforthesafetyofthemselvesandothersinthevicinity.Saw
bladesarecapableofcausingseriousinjury
Thinksafe Actsafe Besafe

LUBRICATION

UseCengarGreenOilwithlongerlasngcoangproperesforbest
results.CengarGreenOilisspeciallypreparedto:‐

1 Emulsifythewatergenerallyfoundincompressedairlines.
2 Giveperfectmistlubricaon.
3 Remainfluidatthelowworkingtemperatureofcompressedairtools.
4 Containscorrosionandoxidaoninhibitors.

Incorrectoilsifusedwillsoon“breakdown”formingasludgewhichwill
slowandeventuallystoptheaconofthesaw.Seemaintenancedetails.

INSTALLATIONOFBLADES.

Beforeaempngtoinsertorchangeablade,ensurethattheairsupplyis
isolatedbydisconnecngtheairline.Loosentheretaininggrubscrews
withthekeyprovided,insertbladethroughnosepiecesothattheteeth
arecungonthepullstroke.

Locatethebackscrewintheholeintheendoftheblade,foraposive
drive,thefrontscrewcanthenbeghtenedtogripthebladefirmly.

BLADES

Cengar“Shaerproof”Bi‐Metalbladesarespeciallypreparedforusewith
Cengarsaws,towithstandthehighoperangspeeds,andgivemaximum
cunglife.

Choosetheteethperinchtosuitthecharacteriscsofthematerialbeing
cut.
Choosepitchtoensurethatatleast3or4teetharecungatthesame
me.

Alwaysremovethesawfromtheairlinebeforecommencingany

OPERATINGTHESAW

Werecommendthateyeproteconbeworn,andnormalsafe
workingpraccesobservedaspertheHealthandSafetyatwork
act,andtheappropriateNaonalandStateLaws.
TheJSZshouldbeusedinconjunconwiththepipeclampwhere
possible.
Connecttheairsupply,restthebladeonthematerialtobecut
withthenosepiecefirmlyabuedtotheworkpiece,withforward
handpressure,topreventjudder.AllowtheCengarSawtocut
underitsownweight,withjustaslightdownwardhandpressure
tokeeptheteethengagedinthecut.Itisnotnecessarytoput
excessivedownwardpressureonthesaw,thisonlyaccelerates
bladewear,andpreventsthesawfromoperangefficiently.
Normalairlinepressureof5to6Barisrequired,anyhigher
pressureonlyacceleratesinternalwearofthemachine.

USEINHAZARDOUSAREAS

Westronglyadvisethatthecontactareaofthebladeonthework
piecebequenchedwithcoolantorwaterduringcungto
dissipateanyheatwhichmaybecreatedbythecungprocess.
An‐stacconducveairhosemustbeused,withadequate
earthbondconnuity(resistancebelow1ohm),togroundany
electrostaccharges.

MAINTENANCEANDGENERALHINTS

Alwaysensuresufficientoilinthetool,especiallywhenthesawis
inconstantuse.

Thevalveunitpartno.8308isavitalcomponentmanufacturedto
closetolerances,andwillnottolerateabusivetreatment.
Lubricaonisessenal.Anyneglectwillseriouslyaffect
performanceofthesaw,causingthesawtostallintermiently,or
stopcompletely.

Verylilemaintenanceisrequiredifthecorrectoilisused,but

JSZExplodedView

ItemPartNo.DescriponNumber
PerTool
ItemPartNo.DescriponNumber
Pertool
18301Handle1198313Screwforabove1 250034ValveinHandle1208319Conn.RodGuide1 38303Trigger&Catch1218320SilencerGuard1
  1228324Nosepiece1
59334ASpring12354160Screws—nosepiece2 651834Pinsfortrigger32454034Screws2 78306OilPlug&Seal12553034Screws4 88307FFilter1268310Piston2 98308ValveUnitComplete1278310LSPistonSeal2
108307Gasket2288312LingtoPistons1 118309ZBody1298318ConnecngRod1 128314SpeedRegulator13055516BladeGripScrews2 135012‘O’Ring23151114PinstoPiston2 145006‘O’Ring13251114PintoConnRod1 158315ASpring1330291‘O’Ring1 168315ClampSecuringPin13454134Screws—Handle6 178314CRegulatorretainer1358316FrontendBracket1 1855161CentreSha 1369332CDétenteBall1

IF THE SAW DOES NOT OPERATE
1 Checkthattheairsupplyisswitchedon.
2 Checkairsupplyiscorrect.
3 Valveinhandle(partno.50034)couldbewornand/orthesealis
broken,blockinganairpassage.Checkandreplaceifnecessary.
4 Valveunit(PartNo.8308)maybestuck.ITISIMPERATIVETOREMOVE
THESAWFROMTHEAIRLINEBEFORECOMMENCINGTHISCHECK.
Removethetwohexagonalnuts,pushoutvalvepistonwithapencil,
keepingnotewhichendistop.Cleanwithoilonly,NEVERUSE
ABRASIVE.Cleanvalveborewithoil,re‐fitpistonfromtop,keepingthe
sealatthetopend.Tightennutsandreconnectsawtoairsupply.
REPLACEMENTOFPISTONSEALS
1 Eachsealconsistsoftworings,replacementsmustbefiedasfollows:
‐
2 Place the elastic ring in the centre of the piston groove, ensuring it is
not twisted
3 Fit the Stiffer sealing ring on top of the elastic ring, Use some green oil
to ease its passage over the piston.
4 Fitthepistonsintotheboresusingaringcompressor,withacoangof
CengarGreenoil,andensuretheyslidesmoothlyoverthefulltravel
range.

PIPECUTTINGWITHTHEJSZ
1.Fitthepostintotheappropriatesideoftheclamp,thecutlinewillbe
50mm(2”)awayfromthenearestsidefaceofthefoot.
2.Posiontheclamponthepipe,withthechainaround,andghten
withspannerprovided.Ensurethattheclampisperpendiculartopipe
Fig.1

3. Fitthedesiredsawbladewiththeteethuppermost
4. Mountthemachineontothepostoftheclamp,bypullingbackthe
plungeronthetopofthesaw,andslidingontothepostunlthe
plungersnapsback.Ensurethemachinehaslockedonproperly.
5. Whenmountedcorrectly,thebladeshouldbeunderthepipe,such
thattheweightofthemachineappliesthecungforcetotheblade.
(Fig.2)
6. Startthemachine,lockingonthetrigger,andgentlybringtheblade
intocontactwiththework,graduallyreleasetheweightofthe
machineandallowthecuttotakeplacewithoutextraforce.
7. Ifusingalongbladeforlargerdiameterpipes,thebowguidesupplied
canbeusedtoensureastraightcutisachieved.Oncethebladehas
enteredintotheworkenoughtoselfsupport,thebowguideisno
Fig.2

ClampCP1

NEVER

1 NEVERfitbreakable“All‐Hard”bladesinCengarsaws,these
canshaercausinginjurytoyourselfandothers.
2 NEVERoperatesawwithoutwearingsafetyglasses
3 NEVERoperatesawwhilstyou,orothersarenearthesaw
blade,whichcancauseseriousinjuryortrapping
4 NEVERuseexcessiveforce,thismayincreasevibraon
abovesafelevels
5 NEVERholdtheCengarsawinavicebythebody,thiswill
distortthebores,renderingthetoolinoperave.
6 NEVERscrewnameplatestothebody,asthescrewsmay
penetrateanairwayorbore.
7 NEVERoperatetheCengarsawwithoutlubricaon.
8 NEVERbetemptedtocleaninternalpartswithanythingother
thanacleanlintfreecloth,andM.S.Cleaner,orCengarGreen
oil.
9 NEVERmodifyCengarsawsorusenonCengarparts,thiswill
invalidateATEXapproval,andwarranty.

ALWAYS

1 ALWAYSuseCengargreenoilforbestresults.Keepingthesaw
cleanandwelloiledwillgiveexcellentreliability,andalong
life.
2 ALWAYSuseCengarBi‐MetalShaerproofblades,forsafety,
andbestcungperformance
3 ALWAYSisolatetheairsupplywhenchangingblades.
4 ALWAYSweareyeproteconwhenusingsawingmachines.
5 ALWAYSkeepthenosepieceabuedtotheworktoprevent
excessivevibraon
6 ALWAYSisolatethemachinewhennotinuse
7 ALWAYSkeepothersawayfromthesawbladetoprevent
injuryortrapping
8 ALWAYShavemachinesvibraontestedannuallytoensure