CHESTER U.K. H80 User manual
IMPORTANT
SAFETYFIRST
ALLMACHINESAREDANGEROUS
1.Usethecorrecttoolforthejobathandnevermakeamachinedoajobitwasnotdesignedfor.
2.Neverforcethetoolinthemachineitwilldothequickerandsaferatthecorrectrate.
3.Alwaysuseclampsorvicestosecurework– yourhandisnotstrongenough!
4.Whenchangingtoolsorworkpiecesalwaysdisconnectthemachinefirst.
5.Servicethemachineregularly;acorrectlyoperatingmachineisasafermachine.
6.Alwaysreplacebeltcoversbeforestartingthemachine.
7.Understandthemachinefullybeforeoperationandalwaysreadthemanual.
8.Gettoknowthemachineslimitationsandapplications.
9.Ensurethatthemachineissecurelyboltedtothebenchandthatthebenchissecurelyboltedtothe
ground.
TAKEGREATCAREWHENOPERATINGTHISMACHINETOPROTECTYOURBODY
1.Alwayswearsafetyglasses–everydayglassesarenotsuitable.
2.Dustcanbecausedwhenmachiningcertainmaterials,alwayswearamask.
3.Makesureyouarenotwearinganylooseclothingsuchasties,rings,braceletsthatmaygetcaughtin
themovingpartsofthemachine.
4.Keepaproperfootingandbalancewhilstoperatingthemachine.
5.Neverleavecleaningrags,etconornearthemachine.
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SAFETYFIRST
ELECTRICS
1.Allelectricaltoolsmustbeearthed.
2.Neveruseelectricaltoolsindamporwetenvironment.
3.Makesurethemachineisintheoffpositionbeforeswitchingonatthemains.
4.Alwaysimmobilisethemachinebeforeservicingorsettingupworkinthemachine.
5.Greatcareshouldbetakenwhenusingcoolantfluidwithmachinetools.
6.Ensurethemachineiscorrectlyconnectedandafuseoftheproperratingisused.
CHILDREN
1.Keepchildrenawayfrommachines,ifnecessaryfitsafetylockstothemachineandmainsswitches.
2.Neverusemachinerywhilsttalkingtovisitors,alwaysconcentrateonthejobinhand!
REMEMBERALLMACHINESARE
DANGEROUSIFNOTUSED
CORRECTLY!
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CONTENTS
1. MachineSpecifications......................................................................................................................4
2. RecommendedSpeedsforCuttingofVariousMaterials...................................................................4
3. MachineAdjustments........................................................................................................................5
4. Maintenance.......................................................................................................................................7
5. Troubleshooting.................................................................................................................................7
6. ElectricalConnection&Operation....................................................................................................8
7. Installation&Adjustments................................................................................................................8
8. PartList..............................................................................................................................................9
9. PartDiagram....................................................................................................................................10
10. StandDiagram..................................................................................................................................11
11. CircuitDiagram................................................................................................................................12
12. ElectricalPartList............................................................................................................................12
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MACHINESPECIFICATIONS
Motor 230V/50Hz420W
BladeSpeed 20,29,50m/min
Max.CuttingCapacity(@90°) Rounddeg90mm
Square90x120mm
Max.CuttingCapacity(@45°) Rounddeg60mm
Square70x65mm
BladeSizeLength 511/8”
Teeth 14tpi(asstandard)
Thickness 0.025"
Width 1/2"
SawBodyTiltingRange 0° 45°
PackingSize 760x295x465mm
RECOMMENDEDSPEEDSFORCUTTINGOFVARIOUS
MATERIALS
MOTORPULLEY SAWPULLEY
MATERIALCUTTINGCHART
Material Speed (SFM) BeltGrooveUsed
50Hz 60Hz MotorPulley SawPulley
Tool,Stainless 20MPM 24MPM SmallA LargeD
orAlloySteel (65FPM) (80FPM)
BearingBronzes,MildSteel, 30MPM 36MPM MediumB MediumE
HardBrassorBronze (95FPM) (120FPM)
SoftBrass,Aluminium 50MPM 61MPM LargeC SmallF
orOtherLightMaterials (165FPM) (200FPM)
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MACHINEADJUSTMENTS
TRACKINGTHEBLADE
1. Firstdisconnectthemachinefromthepowersupply
2. Openthebladeguard.
3. Loosenthetensionontheblade,byturningbladetensionknob Ⓑ(seeFig.2).
4. Loosen grub screw Ⓘ (see Fig. 3). This will enable the motor pulleyⒿ (see Fig. 3) to be
adjustedwhilstontheshaft.
5. WhenthepulleywheelisadjustedretightengrubscrewⒾ.
6. Replacetensiononthebladeusingthebladetensionknob,andclosethebladeguard.
7. Reconnectthepowersupply.
BLADEGUIDEBEARINGADJUSTMENT
Itisimpossibletogetsatisfactoryworkfromthesawifthebladeguidesarenotproperlyadjusted.
1. Disconnectthemachinefromthepowersupply.
2. LoosentheHex.nutⓀ(seeFig.4).
3. AdjustbearingsⓁ(seeFig.4).
4. RetightenHex.nutⓀ.
5. Reconnectpowersupply.
BLADEGUIDEADJUSTMENT
Therearetwobladeguides,oneeachsideoftheworkpiece.
1. Disconnectmachinefrompowersupply.
2. FirstloosenHex.boltⓂ(seeFig.5).
3. PivotbladeadjustmentbracketⓃuntilthebladeissquarewiththemachinebed.
4. RetightenHex.boltⓂ.
5. Reconnectpowersupply.
Note:Bladeguideassemblycanbeadjustedbyunclampingknob Ⓖ(seeFig.2).
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MACHINEADJUSTMENTDIAGRAMS
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MAINTENANCE
1. Cleanthebandsawaftereachoperation.
2. Coatthemachinewithrustproofoil.
3. Use a standard grade oil to lubricate the bandsaw’s components. SAE30 oil is
recommendedforthispurpose.
TROUBLESHOOTING
Symptom PossibleCauses CorrectiveAction
ExcessiveBladeDamage 1.Materialislooseinthevice. 1.Clampworksecurely.
2.Incorrectspeedorfeed. 2.Adjustthespeedorfeed.
3.Bladeteethspacingistoolarge. 3.ReplacewithasmallerTPIblade.
4.Materialistoocourse. 4.Usebladeatslowerspeed&TPI.
5.Incorrectbladetension. 5.Adjusttensionsobladedoesnot
sliponthewheel.
6.Bladeisincontactwithmaterial 6.Placebladeincontactwithwork
beforethesawisstarted. onlyafterthemotorhasstarted.
7.Bladerubsonthewheelflange. 7.Adjustthewheelalignment.
8.Misalignedguidepivots. 8.Adjustguidepivots.
9.Bladeistoothick. 9.Useathinnerblade.
PrematureBlade Dulling 1.Bladeteetharetoocourse. 1.UseasmallerTPIblade.
2.Toomuchspeed. 2.Reducethespeed.
3.Inadequatebladetension. 3.Adjustthespring
4.Hardspotsorscaleonmaterial. 4.Reducespeed,increasefeedpressure.
5.Bladeistwisting. 5.Replaceblade,adjustbladetension.
6.Insufficientbladetension. 6.Tightenbladetension.
7.Bladeissliding. 7.Tightenbladetension,reducespeed.
UnusualWearonSideor 1.Bladeguidesareworn. 1.Replacebladeguides.
BackofBlade 2.Bladeguidepivotsaremisaligned. 2.Adjustguidepivots.
3.Bladeguidebracketsareloose. 3.Tightenbladeguidebrackets.
TeethRippingfromBlade 1.Bladeistoocourseforthework. 1.UseafineTPIblade.
2.Toomuchpressure,speedistooslow. 2.Decreasepressureandincreasespeed.
3.Workpieceisvibrating. 3.Clampworkmoresecurely.
4.Bladeistoofineforthework. 4.UseacourseTPIblade.
MotorOverheating 1.Bladetensionistoohigh. 1.Reducethebladetension.
2.Drivebelttensionistoohigh. 2.Reducethedrivebelttension.
3.Bladeistoocourse. 3.UseasmallerTPIblade.
4.Bladeistoofine. 4.UseacourserTPIblade.
5.Gearsneedlubrication. 5.Lubricategears.
6.Cutisbindingblade. 6.Decreasethefeedandspeed.
Bad,CrookedorRoughCuts 1.Feedpressureistoogreat. 1.Adjustspringtoreducepressure.
2.Guidepivotsaremisaligned. 2.Adjustguidepivots.
3.Inadequatebladetension. 3.Increasebladetension.
4.Bladeisdull. 4.Replaceblade.
5.Incorrectspeed. 5.Adjustspeed.
6.Bladeguidesarespacedouttoomuch. 6.Adjustguidespacing.
7.Bladeguideassemblyisloose. 7.Tightenguideassembly.
8.Bladeistoocourse. 8.UseafinerTPIblade.
BladeisTwisting 1.Cutisbindingblade. 1.Decreasefeedpressure.
2.Bladetensionistoohigh. 2.Decreasethebladetension.
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ELECTRICALCONNECTION&OPERATION
ELECTRICALCONNECTION
1. Themetalcuttingbandsawisequippedwithastandardplugtoconnecttopowersourcewith
singlephase,50Hz,and220Vor240V.
2. Fortheprotectionofthecontroldevice,werecommendtheoperatortosupplyafusewith6A
currentoffuse.
3. Thetotal length between supply fuse and plug/ socket connectionshall not be greater than
1.5m.
ELECTRICALDISCONNECTION
1. Removing the plug from the socket carries out the disconnection of the metal cutting band
saw.
2. Besuretodisconnectthemachinefromthepowersource,whenyouwanttostopthejoband
maintainorinspect.
GROUNDING
1. Thegroundingsystemofthismachineisprovidedinthewayofastandardplug,whichisin
compliancewiththelocalstandard.
2. WARNING!“Donotchangetheplugintoanyothertypethanisprovided.”
OPERATION
1. START: Pressthebuttonmarked“I”.
2. STOP: Pressthebuttonmarked“0”.
3. STOPATTHEENDOFCUTTING: This machine will stop automatically at the end of
cutting.
INTERLOCK&ADJUSTMENTS
INSTALLATION:
1. Beforeinstallation,sufficientspacewithatleast2.5m*2.5mbyafreespaceofatleast0.8min
alldirectionsshallbeprovidedforthemachine.
2. Theplaceprovidedforthemachineshouldbecleanandflat.
3. Sufficientlightingshouldbeprovidedaccordingtothelocalregulationformetalworking,orat
least300Luxambientlightingintensity,ifnoregulationsexists.
ADJUSTMENTS:
Adjustmentsofsawblade
1. Thebladetensionknobwiththeindicatorcarriesouttheadjustmentofthesawblade.
2. Suitable blade tension is adjusted by hand without the help of a tool. For a suitable blade
tension, you should not be able to move with the pressure of your finger, with appropriate
forceatthesawblade.
Adjustmentsofbladecover(Left&Right)
Theleftandrightadjustablebladecover isdesignedtopreventaccesstothemovingsaw blade
duringcutting.Theymustbeadjustedasnearaspossibletotheworkpiece.
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PARTLIST
ItemNo. ItemDescription ItemNo. ItemDescription ItemNo. ItemDescription
1 Base 40 Bracket 79 Pulley
2 Bolt 41 Plate 80 Bearing
3 Chain 42 Bracket 81 Shaft
4 Pad 43 Bracket 82 SealingPlate
5 Washer 44 LockingHandle 83 Pulley
6 Bolt 45 Knob 84 Oilseal12.32.7
7 Nut 46 Bolt 85 Sleeve
8 Bolt 47 Washer 86 VBelt
9 Bolt 48 Washer 87 Pulley
10 Bolt 49 Bracket 88 Washer
11 Washer 50 Plate 89 Screw
12 Bolt 51 SealingWasher 90 PulleyCover
13 TurnionBracket 52 Gear 91 Key
14 Nut 53 Bolt 92 Motor
15 Handle 54 Bolt 93 AdjustingKnob
16 Spring 55 Bracket 94 Base
17 Nut 56 Bracket 95 Bolt
18 Plate 57 Bearing 101107 STAND
19 Bolt 58 Sleeve
20 Axle 59 Washer
21 Shaft 60 Knob
22 ScaleLabel 61 Bolt
23 Bolt 62 Axle
24 Washer 63 Wheel
25 Pointer 64 RetainingRing
26 Washer 65 Bolt
27 Hex.Bolt 66 Bracket
28 WheelHandle 67 Plate
29 Washer 68 Pin
30 Bolt 69 Blade
31 ClampJaw 70 Knob
32 Bolt 71 Cover
33 Plate 72 Screw
34 Washer 73 Wheel
35 SpringWasher 74 Shaft
36 Vice 75 Washer
37 ThreadedShaft 76 Key
38 Knob 77 MainBody
39 Bolt 78 GearBox
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PARTDIAGRAM
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STANDDIAGRAM
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CIRCUITDIAGRAM
ELECTRICALPARTLIST
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