Centauro Sp series User manual

BAND SAW

SP SERIES

USE AND MAINTENANCE MANUAL

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NOTICE: read the instructions booklet carefully and keep it for future reference

TABLEOFCONTENTS

1. WARRANTY ................................................................................................................................................. 4

2. TECHNICALPARTICULARS ......................................................................................................................... 4

3. STANDARD EQUIPMENTOFTHEMACHINE............................................................................................... 4

4. ACCESSORIESONREQUEST .................................................................................................................... 5

5. MACHINESPECIFICATIONLABEL .............................................................................................................. 5

6. NOISEEMISSION ........................................................................................................................................ 5

7. DUSTEMISSION .......................................................................................................................................... 5

8. INDIVIDUALPROTECTIONFACILITIES......................................................................................................... 5

9. FORESEENUSE OFTHEMACHINEAND CONTRA-INDICATIONSOFUSE ............................................... 6

10. WARNINGSONREMAINING RISKS ............................................................................................................ 6

11. CONSTRUCTIVESAFETY SYSTEMS .......................................................................................................... 6

11.1. Controls ............................................................................................................................................. 6

11.2. Insufficient ornopower supply to the power andcontrolcircuits......................................................... 7

11.3. Protection against mechanical risks .................................................................................................. 7

11.3.1. Stability ...................................................................................................................................... 7

11.3.2. Riskof breakageduring operation ............................................................................................... 7

11.3.3. Risks dueto rough surfaces and corners .................................................................................... 7

11.3.4. Risks of accessing moving parts................................................................................................. 7

11.4. Protection againstnon-mechanical risks............................................................................................ 7

11.4.1. Fireand explosion ...................................................................................................................... 7

11.4.2. Noise .......................................................................................................................................... 7

11.4.3. Emissionof shavings and dust.................................................................................................... 8

11.4.4. Electricity ................................................................................................................................... 8

11.4.5. Ergonomicsand positioning ........................................................................................................ 8

11.4.6. Vibration ..................................................................................................................................... 8

11.4.7. Information forUse -Maintenance ............................................................................................... 8

12. RECOMMENDATIONSANDADVICE FORSAFE USE ................................................................................ 8

12.1. Machineisolation procedure............................................................................................................... 8

12.2. Generalrecommendations ................................................................................................................. 8

12.3. At the workplace ................................................................................................................................ 8

12.4. Duringwork........................................................................................................................................ 9

12.5. Duringmaintenance ........................................................................................................................... 9

12.6. Adviceforuse .................................................................................................................................... 9

13. INSTALLATION ............................................................................................................................................ 10

13.1. Overalldimensions........................................................................................................................... 10

13.2. Workplace ....................................................................................................................................... 10

13.3. Lifting ................................................................................................................................................ 11

13.4. Positioningandlevelling .................................................................................................................... 11

13.5. Connection to the extraction system................................................................................................. 11

13.6. Electricalconnection......................................................................................................................... 11

13.7. Starting ............................................................................................................................................ 12

13.8. Stopping .......................................................................................................................................... 12

13.9. Emergencystop (whenpresent)....................................................................................................... 12

14. USINGTHEMACHINE................................................................................................................................ 13

14.1. Fittingand adjusting the blade ......................................................................................................... 13

14.2. Bladeguide adjustment ................................................................................................................... 14

14.3. Tableblock insert............................................................................................................................. 14

14.4. Extractionboards............................................................................................................................. 14

14.5. Cuttingwith guide ............................................................................................................................ 14

14.6. Angled cutsdevice (whenfitted) ....................................................................................................... 15

14.7. Table block tilting ............................................................................................................................. 15

15. BLADECHOICE AND UPKEEP ................................................................................................................. 15

16. MAINTENANCE .......................................................................................................................................... 17

16.1. Machinemaintenance ...................................................................................................................... 17

16.1.1. Beltreplacement....................................................................................................................... 17

16.1.2. Flywheelrubbercovering replacement....................................................................................... 17

16.1.3. Flywheelring sealreplacement................................................................................................. 18

16.1.4. Flywheelbearingreplacement................................................................................................... 18

16.2. Maintenanceof theelectromagneticbrake ....................................................................................... 19

16.3. Electricbrake maintenance.............................................................................................................. 19

17. MAINTROUBLEANDRELATIVE REMEDIES ............................................................................................ 20

A. SAFEWORK PROCEDURES(TC142WG3) .............................................................................................. 21

B. SPAREPARTS ........................................................................................................................................... 27

1. WARRANTY

Warrantyconsistsofthe replacementfreeofcharge ofdefectivemechanicalparts, whichwillbeshipped toyoufree

at our plant.

It is valid for one year as of the date of our invoice and does not include the motors and electric and electronic

components.

Inaddition,itdoesnotcoverthetroubleordefectsduetoexternalfactors,errorsinmaintenance,improperuseofthe

machine, using the machine in overload conditions, errors in assembly, or other causes not ascribable to us.

Anyrequestsfor after-salesservice orspareparts needto beaddressedto ourauthorized areadealer.

2. TECHNICALPARTICULARS

3. STANDARDEQUIPMENTOFTHEMACHINE

• Tiltingtableblock(20°)

• Topprecisionbladeguide

• Bladetensiongauge

• Rigidbladeprotection

• Rack device and clutch to adjust the top blade guide

• Automaticflywheelbraking

• Steelblade readyfor use

• Pusher for cutting small-sized pieces

• Spanners10/13-17/19mm

• Hexagonspanners4-5-6mm

• Useandmaintenancehandbook

• Wiringdiagram

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4. ACCESSORIESONREQUEST

• Motorwithupratedpower:

• Single-phaseversion(SP400-SP500-SP600)

• Bottomprecisionguideblade

• Groundtable

• Groovedtablewithlightfenceforangularcuts

• Groovedtablewithhardfenceforangularcuts

• Laser unit Z3A with battery supply

• Automatic starter for SP800

5. MACHINESPECIFICATIONLABEL

6. NOISEEMISSION

Lm= Meanlevelofacousticradiationpressure

Lw= Acousticpowerlevel

Lpc = Instantacousticpowerlevel

Accordingto ISO7960 standardsattachment J Constant of declaration: k = 4 dB

Thevaluesofnoiselevelgivenareemissionlevelsanddonotnecessarilyrepresentsafeoperatinglevels.Althoughthere

isarelationshipbetweenlevelsofemissionandlevelsofexposure,thiscannotbeusedreliablytoestablishwhether

furtherprecautionsarenecessary.Thefactorsdeterminingthelevelofexposurethelabourforceissubjecttoinclude

thedurationofexposure,thecharacteristicsoftheworkroom,othersourcesofdustandnoise,etc.,thatisthenumber

ofmachinesandotheradjacentprocesses.Theallowedlevelsofexposuremayalsovaryfromonecountrytoanother.

Inanycase,thisinformation willenable theuserofthemachine tomake abetterevaluationofthe dangerand ofthe

risk.

7. DUSTEMISSION

8. INDIVIDUALPROTECTIONFACILITIES

• Glovesforhandlingmaterialandchangingblades

• Non-slipandcrush-prooffootwear

• Protectiveeyewear

• Soundproofhelmetorearmuffs

• Dust-proofface-mask

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9. FORESEENUSEOFTHEMACHINEANDCONTRA-INDICATIONSOFUSE

Themachinehasbeendesignedandmadetocutpiecesofwoodorsimilarmaterials(cork,cardboard,plasticmaterials,

chipboardpanels),inthedimensionallimitsindicatedinthetechnicaldataandincompliancewiththesafety,useand

maintenanceinstructionsgiveninthismanual.Thewoodcanbecuteitherlongitudinallyorcrosswisewithrespectto

thegrain.

Feeding is to be done manually. Unless specifically requested, it is not fitted for the application of mechanical feed

appliances(feeders),sonoresponsibilityisacceptedifthisapplicationismadebytheuserorbythirdparties.

Itcanbeusedbyonlyonepersoninfrontofitsoastobeabletooperatethestartandstopcontrolsandtohandlethe

pieces.

Thispersonwillneedtohavehadasufficientperiodoftrainingonuseandmaintenanceandtohavetheminimumage

requiredby the law in forceinthe relative country.

Theindividualprotectionfacilitieswillhavetobeusedandtheprecautionsgiveninthisbookletwillhavetobetaken.

Use other facilities, if any, that may be necessary depending on the work environment and conditions.

Allthesafetymeasureshavebeentakeninrelationtotheabove,soitisforbiddentousethemachinetocarryoutother

workand/ortomakemodificationswithouttheprioragreementofthemanufacturer.

In particular, using the machine to cut metals is excluded.

Furthermore, in its standard version it cannot be used in places with a risk of explosion.

10. WARNINGSONREMAININGRISKS

Inthistypeofmachine,accesstothebladeisalwayspossible,evenwhenthetelescopicprotectioniscorrectlyadjusted

and locked in height, in relation to the piece to be cut (23 mm above the piece).

It is therefore essential to:

• keep hands as far away as possible from the blade between one passage and the next

• use the passage-end pusher for pieces with a small cross-section

• use special tools (e.g., special pushers, supports for short pieces, etc.)

• completely lower the protection to the level of the table block at the end of work

• in the event of the saw blade breaking, even when operating the stop control the top flywheel is not

braked.Itisthereforenecessarytowaitforittohavestoppedcompletelybeforeopeningthedoorstopreventthe

risk of the belt being thrown.

Keep,moreover, to theinstructionsfor safe usegiven in this manual.

11. CONSTRUCTIVESAFETYSYSTEMS

11.1. Controls

Thecontrolmembersareclearlyvisible,identifiableandeasilyaccessiblebytheoperator,situatedfarfromdangerous

areas.

Theycan onlybeoperated intentionallyby theoperator.

After a period of downtime due to any reason, restarting is only possible after re-establishing the safety conditions

(guards).

Modelswithdirectstartingareequippedwithbrakereleasebutton(withdetent),whileinmodelswithstar-deltastarting,

theswitchingdevicehasanauxiliaryposition(F)(reachedbypressingtheleverinanaxialdirectionbeforeturningit).

This allows the blade to be settled on the wheels by hand when it is fitted on the machine. Release is indicated by

a yellow light close to the controls.

When the emergency stop control is operated (by pressing it), on those models that have it, it stays held in the stop

position and to re-establish operating conditions it is necessary to turn it clockwise to be reset.

11.2. Insufficient or no power supply to the power and control circuits

Cuttingoff,resettingorchangingtheelectricalpowersupplyinanysensecreatesnosituationofdanger.Inparticular,

they do not produce:

• untimelystarting

• anobstacle tostopping if theorder hasalready been given

• an obstacle to manual or automatic stopping of the moving parts

• inefficiencyofthesafetydevices

11.3. Protection against mechanical risks

11.3.1. Stability

The machine is equipped with holes in its foot to be safely fixed to the floor. This has the purpose of only preventing

ittiltingover,butthescrewsmustnotbetightenedfullysincethiswouldcausevibrationduringoperation(itistherefore

advised to use stud bolts and self-locking nuts that have to remain at a distance of 2÷3 mm from the foot).

11.3.2. Risk of breakage during operation

Theentirepathofthebladeinsidethemachineisprotectedwithinterlockedfixedormobileguards,exceptforthesection

strictly involved in sawing, minimizing this risk.

Thepassageofthebladethroughtheworktableblockisprotectedbyaninsertofsoftmaterial(plasticorwood)toprevent

its contact with the metal parts.

11.3.3. Risksduetoroughsurfacesand corners

Alltheprecautions have been taken to prevent any riskofinjury.

11.3.4. Risksofaccessingmovingparts

Flywheels,pulleys andbelts arecompletelyprotected bycowlings obtainedin thebaseand bydoors interlockedby

means of microswitches that prevent starting the machine if they are not closed.

An automatic braking system ensures the machine stops within 10 sec. of operating the control.

11.4. Protectionagainst non-mechanical risks

11.4.1. Fire and explosion

There are sawdust extraction mouths and instructions are provided for their connection in order to obtain efficient

extraction.

11.4.2. Noise

Measureshavebeenadoptedtoreducenoiseemissions.Thismanualgivesthevaluesmeasuredandthetestmethod

(seeparagraph6).

11.4.3. Emissionofshavingsanddust

Seeparagraph7.

11.4.4. Electricity

The electric system is in conformity with the EN60204-1 standards.

11.4.5. Ergonomicsandpositioning

Allthecontrolshavebeenpositionedinrelationtotheergonomicandanthropometricdata,theyarethereforefullyvisible

andeasily operatedfrom thework position.

11.4.6. Vibration

Theflywheelsarebalanced,sotheydonotgiverisetovibration.Itishoweveradvisedtoplacevibration-dampingplates

between the floor and the foot, also to reduce noise emissions.

11.4.7. Information for Use - Maintenance

Inadditiontotheinformationcontainedinthisbooklet,indelibleplateshavebeenaffixedtothemachinetoidentifythe

controls.

12. RECOMMENDATIONSANDADVICEFORSAFEUSE

12.1. Machine isolation procedure

Before doing any maintenance, repair, or other work, the machine must be isolated by disconnecting the line cable

connector or by turning onto position "O" and padlocking the knob of the master switch (on models equipped with

self-braking motor), to isolate the machine with plug connection it is necessary to remove the plug from the socket.

Thismustbedonebythesamepersondoingthework.Ifitisasimplemaintenancejob,thispersonmaybetheoperator.

When the machine is out of order, mark it with a sign.

12.2. General recommendations

• Machinesfor processingwood, giventhe highspeedof thetools andthe speedof execution,are consideredthe

most dangerous ones, therefore it is necessary not to underestimate the risks and to concentrate on the job.

• Thesafetydevicesmustnotbeneutralizedforanyreasonwhatsoever,butonthecontrarytheymustbekeptatpeak

efficiency.

• Avoidusingthemachineifyourpsycho-physicalconditionisnotgood,whichmayimpairyourreflexesorattention.

• Wearclothingsuitedtotheworkrequirements.Donotwearlooseclothing,scarves,bracelets,orotherobjectsthat

could get caught up or be dragged. Protect long hair with a cap.

12.3. At the workplace

• Usetheindividualprotectionfacilities(seeparagraph8) ifworkconditionsrequirethem.

• Keeptheworkareainorder,sufficientlyilluminated;arrangespacestostoretherawandprocessedmaterialsand

tomovearoundthemachine. Likewise,keepthefloorcleanofdustandsawdust.Untidinessis synonymouswith

the risk of accident.

• Make sure the table block insert is in a good state; if the blade passage slot has widened or is chipped, replace

it.

12.4. During work

• Always start up extraction even if cutting just a single piece.

• Donot use bladesthat are notsharp enough asthey can produceabnormal vibration.

• In the event of trouble, never act on the machine in movement: operate the stop control and wait for it to stop

completely.

• Nevercutmaterialsthatcancausesparksoroverheatingoftheshavingsandthereforefireorexplosionastheypass

throughtheextractionpipes.

12.5. During maintenance

• Regularmaintenanceofthemechanicalandelectricparts,aswell

asextending the service-lifeof the machineandensuring better

performance,isanimportantsafetyfactor.

• It is absolutely forbidden to set up mechanical members and do

maintenancewithouthavingbeforehandcarriedouttheisolation

proceduregivenabove(seeparagraph12.1).

• Do not climb onto the machine.

• At the end of each operation involving opening or removing

protections,reassemblethemcheckingtheir correctpositioning

andoperationandthatnotoolorforeignbodyhasbeenforgotten

inside.

• ATTENTION:Check the efficiency ofthe guard safety micro

switch monthly; Check that it intervenes before a slot

measuring 3 mm is generated for access to the dangerous

area.Ifthisdoesnothappen,adjustthepositionofthemicro

switch as shown in the figure in a way that its intervention

is anticipated. (only SP-400/500).

• Wearprotectivegloveswhilereplacingtheblade.

• Replacementofmechanical partsmustbedoneexclusively withgenuineparts. Theelectricalcomponentsmust

betheonesindicatedinthelistaccompanyingthewiringdiagram,orwithothershavingthesamesafetyfeatures.

Ifindoubt, consultthemanufacturer.

Non-observance of this point involves losing the manufacturer’s liability on the safety of the machine.

12.6. Advice for use

• Do not tighten the blade too much. Use the tension gauge and tighten according to the width of the blade fitted.

• Neverworkwithbladesthatarenotsharpenoughorthatcutobliquely.Sharpeningandsettingmustbedonecorrectly

andfrequently.

• Alwaysunloosethe blade after use.

• Thethrustwheelofthebladeguidemustneverbeadjustedincontactwiththebackoftheblade,butatadistance

of3÷4 mm. If the bladeis well sharpened andthefeed force regular, itmustnot intervene.

• Onthecontrary,thesidewheelsmustskimoverthebladeastheyhavethespecifictaskofeliminatingitsvibrations

due to the processing.

• Periodicallycheckthestateof theflywheels toverifywhetherthereis anyrocking duetoplayinthe bearings,too

highatemperatureofthebearings,errorsinparallelismoralignment,orabadstateoftheperipheralseal.Thiswill

haveto bereplaced everytime itisworn ordamaged.

• Keepthewheels/lining always clean. Check frequently the condition ofcleaning brush fitted to bottom wheel.

Fig.13-2 Duringmaintenance

Fig.13-2 Workplace

13. INSTALLATION

13.1. Overalldimensions

13.2. Workplace

Ln= Lengthrequiredforthemachine

Lw= Lengthrequiredforworkandmaintenance

La= Auxiliarylengthrequired

Wn= Widthrequiredforthemachine

Ww= Widthrequiredforworkandmaintenance

Wa= Auxiliarywidthrequired

The working area must be sufficiently lighted (with 300 lux at

least).

Fig.13-1 Overalldimensions

Fig.13-3 Lifting

13.3. Lifting

Lifting is done by passing a rope through the holes in the top of the

machine.

Weights: SP 400 Kg120

SP 500 Kg125

SP 600 Kg240

SP 700 Kg300

SP 800 Kg490

Do not lift or move the machine by acting directly on the work

table block.

ATTENTION: After machine lifting, both top hole must be closed by

proper plastic caps, which are included in the tools box.

13.4. Positioning and levelling

Themachine is provided withholesin the foot tobe safely fixed to thefloor. This has thepurpose only of preventing

ittiltingover,butthescrewsmustnotbefullytightenedsincethiswouldcausevibrationduringoperation(itistherefore

advised to use stud bolts and self-locking nuts that have to be at a distance of 2÷3 mm from the foot).

Carefullylevelthemachinewithwoodenwedgesinsertedunderthefoottocompensatefortheirregularitiesofthefloor

and to give the machine the utmost stability.

Itis advised to put vibration-dampingplatesbetween the floor andthefoot as well, toreducenoise emission.

13.5. Connection to the extraction system

It is compulsory to use the extractor.

The SP700 SP800 models have two mouths; one under the table block and one at the rear.

Inthetechnicaldatatableonparagraph2,seethediametersoftheabovementionedmouthsandthecapacityrequired

by the system for effective extraction.

Then,bymeansofflexiblehoseswithaninnerdiametercorrespondingtothatofthemouths,connectthemachineto

the centralized system or to a single extractor.

13.6. Electricalconnection

Inthemodels equippedwithelectricalbrakingdevice, thepowersupply cablemust beconnectedto themachineby

meansofthe connectorsupplied.

Inthosehavingaself-brakingmotor,thepowersupplycablemustbeconnecteddirectlytotheterminalsofthemaster

switch,passingthroughthecable-clampthatwillhavetobefullytightenedoncetheconnectionhasbeenmade.The

yellow-green earth lead is to go to the terminal marked PE.

The minimum cross-section of each conductor must be 2.5 mm2. This operation must be entrusted to qualified

personnel.

Note: Ifinthestartupphasedescribedinthefollowingparagraphtheflywheelsarefoundtoturnintheoppositedirection,

swap over two of the leads that have just been connected to the terminals of the switch. For models supplied

with socket and plug, invert two wires in the plug.

13.7. Starting

Checkbeforehandthatthedoorsareproperlyclosed,theemergencystopbuttonis

notintheauto-detentpositionandthatthetelescopicprotectionofthebladeisfully

loweredonto the table block.

In the models equipped with a switch having an electric brake, once the lockable

coverhas been raised, pressthe green startbuttonO(fig. 13-4).

It is necessary to turn the knob Iof the control switch from "O" to "1".

Intheeventofthepowerbeingcutoff,torestartitis necessarytorepeatthesame

steps, whereas if the magnetic cut-out trips due to short-circuiting it will first be

necessary to press the black push-button again.

Whereas, the models with self-braking motors, press the black key K(fig. 13-5)

located in the rear of machine, or turn the knob of the master switch N(fig. 13-6)

(dependingonmodel),fromposition"O"to"1":thewhiteindicatorlightM(fig.13-7,

13-8) willcomeonsignallingthatthemachineisreadyforoperation, turnknobIfrom

the“O”positiontothe “1”position.whereasifthemachineisequippedwithastar-

deltastarter,turntheknobIasfarasthefirsttrip( );waitforafewsecondsforthe

flywheels to reach full speed, then pass on to the second trip ( ) (optional).

Intheeventofthepowerbeingcutoff,torestartitisnecessarytoturntheknobIback

onto"O"beforerepeatingtheaboveprocedure.

Thesameproceduremustbeadoptedifthemotoroverloadcutoutistripped,after

resetting using the red button X (fig.13-5), or the red button inside the box of the

electric panelforstar-deltastarting(fig.13-6).

13.8. Stopping

PressredbuttonC(fig.13-8)orturntheknobItothe"0"position(fig.13-7).Thebrake

will cause the machine to stop completely in under 10 seconds.

13.9. Emergencystop (when present)

Ifproblemsofanykindoccurduringprocessing,pressdirectlyonthelockablecover

fig.13-7-1 or emergency button C(fig. 13-9), which will stop all the machine’s

functionscompletely,while simultaneously activating the wheel braking system.

Caution: the push-button C, when pressed, remains held; to reset conditions of

normal operation, it is necessary to release it by turning it clockwise.

Fig.13-6 Starting

Fig.13-5 Starting

X K

Fig.13-7 Arresto

Fig.13-4 Starting

Fig.13-8 Stopping

Fig.13-9 Emergencystop

Anidealconditionforcorrectoperationovertimeisfortheteethofthe

bladetoprotrudefromthefaceoftheflywheels (fig.14-2).

The machine is factory set for the maximum blade width.

When, after subsequent sharpening, this width reduces, it is

possibletorestoretheoriginalconditionbytiltingthetopflywheel

bymeans of the handle U(fig.14-3).

Itwillthenbepossibletoperfectthetensionofthebladeusingthe

gaugeH(fig.14-1,14-1-2).Theblade-tighteninghandwheelwillbe

turneduntilthegaugepointerreachesthevaluecorrespondingto

the actual width of the blade.

If this, when it is correctly stretched, has changed its position on

the face of the flywheel, it is necessary to repeat the tilting

adjustmentof thetop flywheel.

When the operation is complete, return all the guards to their

original positions and close the doors; with star-delta starting,

return the master switch knob Ito the "0" position. Fig.14-3 Fitting and adjusting the blade

Fig.14-2 Fitting and adjusting the blade

14. USINGTHEMACHINE

14.1. Fitting and adjusting the blade

Open the doors with the machine at a standstill.

Withthe machinestationary, openthe doors,theprotection door

underthetableblock,andthetransparentprotectionE(fig.14-1)

of the top blade guide (pull, then turn, revealing the slot through

whichtheblade passes).

Ifthemachineisequippedwithanelectricbraketheflywheelsare

normallyidleanditisdefinitelypossibletogoaheadandinstallthe

blade.

Whereas,themachinefitself-brakingmotorssoitisnecessaryto

release the brake beforehand. This is done keeping pushed the

yellowbuttonZ(fig.13-8),orwiththemasterswitchonposition"0",

pressingthemasterswitchI(fig.13-4)andturningittotheleft(onto

position F). The yellow indicator light L(fig. 13-7) close to the

control signals this situation of the machine.

Movethethrustwheelofthebladeguide(s)fullybackand,having

insertedthebladeinitsseat,carefullycheckitisarrangedwellalong

its entire path and does not come into contact with metal parts.

PartiallystretchthebladewiththehandwheelA(fig.14-1,14-1-2)and

then turn the flywheels by hand until it has reached a stable

position.

Fig.14-1 Fitting and adjusting the blade

Fig.14-1-2 Fitting and adjusting the blade

Fig.14-4 Extractionboards

Fig.14-5 Cuttingwithguide

14.2. Blade guide adjustment

Thebladeguidethrustwheelmustneverbeadjustedincontactwiththebackoftheblade,butatadistanceof3÷4mm.

If the blade is sharp and the feed force regular, it must not trip.

Onthecontrary,thesidewheelsmustskimovertheblade,thoughwithoutlockingit,sincetheyhavethespecifictask

ofeliminating its vibrations, dueto sawing.

Thewoodenbuffers ofthebottom bladeguidehave tobeadjusted usingthesame criteria.

14.3. Table block insert

Thetableblockinserthastheimportantfunctionofpreventingthebladecomingintocontactwiththetableblockduring

sawing.Moreover hasa seriesof holesaidingsawdust extraction.

When, as a consequence of being used, the passage slot gets widened or chipped, it has to be replaced.

14.4. Extractionboards

ThetwoboardsSandT(fig.14-4)havethefunction

ofimprovingsawdustextraction.

Asforthetableblockinsert,theymustbereplaced

when the slot for the blade is damaged.

To make this slot on a new board, insert it into its

seatwiththebladefittedand,movingtheflywheels

manually,makeasmallcutonitsheadwherethe

bladepasses.

Then,afterclosingthedoorandputtingthemachine

backinrunningorder,completethecutonthetable

normally down to the necessary depth.

14.5. Cutting with guide

TheguideP(fig.14-5)needstobeusedwhenyou

want to obtain parallel cuts or identical pieces. In

addition, it is to be used to cut thick pieces for

whichthereisthe dangeroftiltingover sideways.

Fig.14-6 Angled cutsdevice

14.6. Angledcutsdevice(whenfitted)

Tomakeangledcutstousethemitrefence

suppliedwiththemachine.

It is equipped with a guide that has to be

insertedinthegrooveonthetableblockand

agoniometer toadjust the cuttingangle.

On unloosing the screws Z(fig. 14-6) , its

distancefromthebladecanbeadjustedin

relationbothtothelengthofthepiecesand

to the opportunity of avoiding the blade

guideincuttingthinpieces,tokeepitaslow

aspossible.Inthelattercaseitmayalsobe

convenienttousethesecondgrooveonthe

perpendicularsideoftheprofiledbody.

14.7. Table block tilting

Theworktableblockcantakeonamaximum

tilt of 20°.

It is necessary to unloose the screw R

(fig. 14-7) and with the aid of the graded

scale,applypressureontheendtogetthe

desiredvalue.ThenlockthescrewRagain.

Forthisworktheguidewillhavetobemoved

totherightofthebladetosupportthepiece

betterduringcutting.Toreturntothenormal

position, turn the table block as far as the

ledge, set originally to 0°.

15. BLADECHOICEANDUPKEEP

Blademaintenancemustbedonewiththeutmostcaresincethequalityandvolumeofworkdoneaswellastheservice-

life of the blades depend directly on it.

Veryoften,thecausesoftroublehabituallyattributedtothemachineareinactualfactduetopoororevenwronghandling

ofthe blades.

WethereforebelieveitextremelyusefultogivehereundersomeinstructionstakenfromthemanualwhichtheSwedish

firm"UDDEHOLM"promotesforabetteruseofthebeltsaw.Forthebeltsawtogivetheutmostefficiencyitisnecessary

toobservethefollowinginstructions:

1) Rightbladethickness

Below we give the table for choosing the blade thickness in relation to the diameter of the flywheels.

Fig.14-7 Table block tilting

inalovortemaiDinalovortemaiD inalovortemaiD inalovortemaiDinalovortemaiD mm004005006007008

amalerossepSamalerossepS amalerossepS amalerossepSamalerossepS mm5,05,06,06,06,0

4) Perfect initial and subsequent sharpening

Sharpening must be done as soon as the teeth lose their cutting edge and

the blade starts forcing the cut.

It can be done, especially for teething with a short pitch, with a triangle file.

Inthiscasethetriangle,whetherbyhandormachine,musthaveroundedges,

to join the bottom of the teeth well and to prevent the start of cracking

(fig. 15-3). When using emery grinding wheel sharpeners it is absolutely

necessarytoprevent the bottom of the teeth fromheatingup to a yellow or

bluecolour,whicheasilyhappenswhennotpayingthedueattentiontousing

thesemachines. Overheatingtheteethcausesaself-hardeningactionand

consequently a change in the structure of the steel that becomes hard like

glass, with the consequence of inevitable cracking and breakage of the

blades.Inaddition,theemerygrindingwheelshaveoftentobedressedwith

specialequipmentandtheedgemustbekeptadequatelyroundtotheextent

ofthebottomofthetooththathastobesharpened.Itisgenerallyadvisedto

usenumber60 forthegrain oftheemerygrindingwheel.

Fig.15-1 Toothbending Fig.15-2 Toothbending

Fig.15-3 Tooth bottom

2) Appropriate toothing for the work to be carried out

The shape of the tooth should be chosen in relation to the type of wood to be cut:

Ordinarytoothingissuitablefordryandseasonedwoods,spacedtoothingissuitableforsoft,greenorfibrousand

even resinous woods, the gullet tooth is better if you have a sharpener suitable for sharpening this type of tooth.

Thepitchofthetoothshouldbechoseninrelationtothetypeofwoodandtothecuttingheighttobemade:fordry

woods and low cuts, short pitches, for green woods and high cuts, long pitches.

Inotherwords, theempty spaceofthe toothmust beableto dischargeall thesawdustits cuttingedge produces.

3) Exact setting of the teeth

Theteethmustbesetcarefullyandprecisely.Theteethmustneverbebentdowntothebasebecausethiscauses

the blades to crack. The teeth must be set so that the bending should not go over half their height and their side

deviation(foreachtooth)thebladethickness(figs.15-1,15-2).

Example:abladeofthickness0.90mmmusthaveamaximumoverallsettingof1.80mm.Itisnecessarytoobserve

thatthemaximumsettingmaybesuitableforverygreenwoods,whereasforseasonedwoodsanoverallsettingof

roughly one and a half times the thickness of the blade is to be preferred. Example: thickness 0.90 mm., setting

1.35 mm.

Moreover,thosewhowishtoleavethetoothneutralfordischargingthesawdust(asnormallyoccursforsoft,green

andresinouswoods)havetoproceedasfollows:

set a right-hand tooth, a left-hand one, then leave a straight tooth and so on. All other methods are wrong. With

pitchesover25 mm it is better to leave one neutral tootheveryfour teeth.

Fig.15-4 Cut for brazing

5) Rational welding, well flattened and straight

Theweldingmaybedoneintwoways:withthebrazingsystembyoverlapping,orbyelectricmeltingbymeansof

automaticmachines.

Inthefirstcase(brazing),theendsofthebladearecutsquareandbevelledsothattheycanoverlapforasection

of ten times the thickness of the blade (fig. 15-4).

Theendspreparedinthiswayarethenlockedontheweldingappliance,takingcareoftheiralignment,andaplate

ofspecialalloy is placed between the surfaces of thebevelthat have to be spread with de-oxidant (borax,which

should be diluted with clean water so as to create a mush).

Iftheheatingforweldingisdoneelectrically,itmustbedoneslowlysoastoreachincandescence;ifitisdonewith

pressedirons,theyneedtohaveatemperatureofapproximately900°C(lightred).

Coolingmustalsobedoneslowlyso thataveryfragilehardeningstructureis notformedinthe steel.Inthe event

ofcoolingcomingaboutquickly(electricequipmentforbrazing),itisnecessarytotemperthepartaffectedbytaking

ituptoadark redcolour forovertwentyseconds.If thewelding isdone byelectricmelting, itis necessaryto take

specialcare overthe temperingoperation.Having madethe joint,it isnecessaryto flattenand levelthe bladeso

that the thickness is as equal as possible to the rest of the blade. It is likewise necessary to check by means of

a check-rule that the welding is perfectly flat and straight to prevent dangerous oscillation of the blade during

operation.

16. MAINTENANCE

16.1. Machine maintenance

16.1.1. Belt replacement

Thisisonlypossibleafterremovingthebottomflywheel.Therefore,unloosethescrewslockingthemotorandthebelt

tightenerscrew;afterwardsunloosethetwonon-markedscrewsregisteringtheflywheelattherearofthemachineand

removethehead screwandrelativewasherthatholdthe bottomshaftin itsseat.Thentakeouttheflywheel withthe

relativeshaftandreplacethebelts;reassembleitalltakingcarenottomovethemarkedscrewsregisteringtheshaft

so as not to alter the alignment of the flywheel.

Thebeltshavethetypeidentifyingtheirdimensionsmarked;ifthismarkingisillegible,theycanberequested,through

ourareadealer,specifying:

• machinemodel(withflywheeldiameter)

• yearofmanufacture

• motorpowerandr.p.m.

• motorpulleydiameter

16.1.2. Flywheel rubber covering replacement

Remember that this must be done when the covering appears worn or damaged (for example as a consequence of

accidental breakage of the blade). It is necessary to call our area dealer.

16.1.3. Flywheel ring seal replacement

On some types of machine the seal covering the outer face of the flywheels (at the part in contact with the blade) is

composedofaclosedringinaspecialmaterialthatrequiresnogluing.Ifthemachineisalwayskeptcorrectlyregistered,

the wear on this seal is virtually null, so its service-life is virtually unlimited.

Itmayhowevergetdamaged,forexamplebyaccidentalbreakageofablade,orwhen

its teeth rest stably on the seal.

If for any reason it is necessary to replace it, it is necessary to comply with these

instructions:

• Thesealhasareferencetoothwhichmustbehousedinthespecialringgrooveon

the face of the flywheel. This groove is not symmetric, but shifted forwards. It is

therefore necessary to position the seal in the right sense (see figure to side).

• To facilitate assembly, we advise heating the seal in water at a temperature of

70-80°Cforatimeof3/4minutes.Oncompletingassembly,waitforittocooldown

completelybeforeproceeding.

• Cleanandfacetheconvexsurfacecarefullywithcoursegrainsandpaperandtrimthe

edgesto the edge ofthe metal facewitha cutting blade.The ring seal alreadyhas

thecorrect convexity.

16.1.4. Flywheel bearing replacement

When the bearings, after having worked for a reasonable period of

time,havetobereplaced,afaceoftheupperflywheelwillhavetobe

previouslymarked soit canbe refittedproperly.

Bothflywheelswillthenhavetoberemoved.Theupperflywheelcan

be taken directly off its shaft; for the lower flywheel, see paragraph

16.1.1. “Belt replacement”. If the shaft is hard to remove, use an

extractor.

Remove all the retaining rings and then the bearings with relevant

spacer. These bearings are of the sealed type and consequently,

when refitting the new ones of the same type, no grease need be

applied.

Workinginthe oppositesequence,refit theunit,being carefulnotto

knock directly on the bearings with the hammer - protect these first

with soft material (wood, plastic, aluminium, etc.).

Note: Ifyou havenot markedthe outerfaceof thetop flywheel,you

can make reference to the screws locking the balancing

counterweights: the side of the flywheel with the head of the

abovementioned screwswillbe fittedon the outside.

Fig.16-1 Reference

tooth

Fig.16-2 Spacer

(The type of motor is shown on its metal rating plate).

Itis possible to makeaquick adjustment withoutremovingthe

fancover:fullytightentheadjustmentscrew(turningitclockwise),

then slacken it anticlockwise by 1/2 turn.

Finally check the correct tension of the belts and the braking

time that, as mentioned above, must be under 10 seconds.

16.3. Electric brake maintenance

Thedurationoftheinjectionofbrakingcurrentintothemotorissetatoriginandcannotbeadjustedafterwardssince,

as there are no parts subject to wear in the system, braking intensity does not deteriorate over time.

Therefore, if braking time is extended, check the tension of the belts only.

Notgettingany positive result, please address to service centre.

Fig.16-4 Setting

Fig.16-3 Brake setting

ADJUSTMENT

SCREW

AIR GAP (r)

16.2. Maintenance of the electromagnetic brake

As explained above, when the stop control is operated, the

flywheels stop in a time of under 10 seconds. If on models

equippedwithaself-brakingmotor,withuse,younoticethistime

gettinglonger,itisnecessarytoadjustthebrakeonthemotor.

Forthisadjustment,seealsotheinstructionssheetsuppliedby

the motor manufacturer, attached to this booklet.

Itisnecessarytoremovethefancoverandturntheadjustment

screw to reach the value of the air gap shown in the table.

(airgap=distancebetweenfixedportionandrotatingportion).

The value of the air gap is checked with a feeler gauge (see

fig.16-4).

epytrotoMepytrotoM epytrotoM epytrotoMepytrotoM)mm()r(pagriA)mm()r(pagriA )mm()r(pagriA )mm()r(pagriA)mm()r(pagriA

092.0

00152.0

21152.0

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