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Bandsaw

N3700 e-classic / N3800 / N4400

9.4 Faults, causes and repairs

Fault

Cause and problem elimination

Machine does not start

Safety break switches are breaking the electric circuit

Ensure that the side doors are closed properly

Emergency stop switch engaged

Unlock the emergency stop switch

Squeaking noises when starting up

Insufficient tension (Drive belt)

Retensioning the drive belt

The cuts are not straight

Check sharpness and set of saw blade
Check the guide fence alignment

The saw blade is torn at the base of 

the individual teeth

Incorrect sharpness and constant overheating, or otherwise incorrect set of 

saw blade
Width of saw blade is too thick in relation to the diameter of the wheel
Defect or soiled wheel running surfaces
Incorrectly aligned wheels

 

✆ 

Felder

The saw blade is rupturing on the 

rear side

Feed rate or pressure is too high during cutting
Poor welded joint

 Saw blade replacement

The rear support roller of the saw blade guide is defective

The machine comes to a stillstand 

with the saw belt locked into the 

workpiece

Stop the motor and loosen the the brake. Enlarge the cutting gap with a 

wedge and remove the workpiece. Prior to switching the machine on again, 

check the condition of the saw belt and its position on the wheels

The saw belt is straying forwards 

and backwards

The belt is not aligned with the welded joints

 Saw blade replacement

The saw blade is slipping to the 

back at the beginning of the cut

The saw blade is not sharp enough or is unsuitable for the type of material to 

be cut, or the surface of the wheel is defective

 

Faults

Attention! The electrical diagrams supplied are only for the use of qualified electricians or the manu-

facturer’s authorized technical personnel. These diagrams do not authorize you in any way to change 

the electrical parts or logic functioning.

Note: The original spare parts that have been authorised for use are listed in a separate spare parts catalo-

gue, enclosed in the documentation package supplied with the machine.

10 Circuit diagrams / Spare parts

Содержание N3700 e-classic

Страница 1: ...Keep this manual handy and in good condition for continual reference User manual Bandsaw N3700 e classic N3800 N4400 Dok ID 500033 901_02 Englisch 2017 01 26 Translation...

Страница 2: ...n the vicinity of the machine so that it is accessi ble to operators when using maintaining or repairing the machine Attention The machine must be inspected immediately upon arrival If the machine has...

Страница 3: ...safety 9 2 7 Personal protective equipment 10 2 8 Machine hazards 10 2 9 Other risks 10 3 Declaration of Conformity 11 4 Specifications 12 4 1 Dimensions and weight 12 4 2 Noise emission 12 4 3 Opera...

Страница 4: ...d workpieces in the transverse direction 25 7 7 3 Cutting workpieces on the upright edge 25 7 7 4 Longitudinal cut of narrow or thin workpieces with the longitudinal guide fence 25 7 7 5 Mitre cuts 26...

Страница 5: ...arning Danger Electric current This symbol warns of potentially dangerous situations relating to electric current Not observing the safety instructions increases the risk of serious injury or death Al...

Страница 6: ...persons who work on or with the machine All descriptions texts drawings photos and other depictions are protected by copyright and other commercial laws Illegal use of the materials is punishable by l...

Страница 7: ...d can therefore be disman tled without problem This material is also easy to dispose of and does not pol Attention Used electrical materials electronic components lubricants and other auxiliary substa...

Страница 8: ...ng conditions as well as the specifications and instructions in this manual The machine may only be operated with parts and original accessories from the manufacturer 2 2 Manual contents All those app...

Страница 9: ...s delegated tasks and recognise potential risks If the personnel lack the necessary knowledge for work ing on or with the machine they must first be trained Responsibility for working with the machine...

Страница 10: ...his analysis and correspond to state of the art technology The machine is considered operationally safe when used properly Nevertheless there are some remaining risks that must be considered The machi...

Страница 11: ...by declare that the machine indicated below which corresponds to the design and construction of the model we placed on the market conforms with the health and safety requirements as stated by the EC J...

Страница 12: ...should help the user to better assess the hazards and risks Depending on the installation location and other variables the resulting noise emission can differ by up to 4 db A from the given values Fig...

Страница 13: ...3 phases with the R S T clamps L1 L2 L3 and the yellow green electrical conductor with the earthing clamp Pe When the machine is first switched on check the rotati onal direction and if incorrect exc...

Страница 14: ...to be a mini mum of 20 m s for materials with a humidity less than 12 The air speed should be increased to 25 28 m s to ex tract dust from more humid materials over 12 Only flame resistant vacuum hose...

Страница 15: ...lade tension hand wheel BSmitre fence Accessories BTSaw blade tension indicator window BUOn Off switch CLLock wheel Wheel door CMVacuum connector CNTiltable table Adjuster hand wheel and clamping leve...

Страница 16: ...ch guarantees that all the moveable parts will come to a stop within 10 seconds once the machine has been switched off Les machoires du frein sont des pi ces d usure et doivent tre contr l es r guli r...

Страница 17: ...Risk of material damage Only operate the machine in ambient temperatures from 10 C to 40 C If the instructions are not followed damage may occur to bearings Ensure that there is sufficient space to wo...

Страница 18: ...crew Determine the exact angle using a 90 triangle If the 90 in the initial position is not correct adjust the stop screw accordingly Check the 90 angle once the clamping lever is back in place Work t...

Страница 19: ...s between the floor and the machine Install the machine in such a way as not to amplify the vibrations and machine noise Ensure that workplace lighting is adequate If the machine is to be installed be...

Страница 20: ...e machine always check to make sure that there are no other persons in the immediate vicinity of the machine During operation When changing to another workpiece or if a malfunction occurs first switch...

Страница 21: ...h spacing Fig 7 1 Saw blades Attention Once the machine is no longer in use loosen the belt tension and place an appropriate warning sign on the machine This will thus prevent damage to the wearing su...

Страница 22: ...at position Swing back the stop Work bench Clamping lever Lever Fence 0 Operation 1 Disconnect the machine from the mains supply 2 Remove table insert and positioning pin Open wheel door 3 Loosen the...

Страница 23: ...the clamping screw 7 5 Adjusting the saw blade guide Fig 7 5 Bearings 7 5 1 Height adjustable protection device The upper saw blade guide has to be lowered as closely as possible to the work piece 5...

Страница 24: ...or this machine and are therefore not authorised Feed the workpiece with constant speed and pressure for wards without applying sideways pressure Do not interrupt the cut and do not pull the workpiece...

Страница 25: ...g round workpieces in the transverse direction Use an auxiliary fence with the minimum measurements to guide the workpiece safely Fig 7 10 Auxiliary fence 7 7 3 Cutting workpieces on the upright edge...

Страница 26: ...Fig 7 14 Cross cut 7 7 7 Diagonal cross cut of rectangular workpieces Fig 7 13 Circular cuts 7 7 6 Circular cuts 7 7 5 Mitre cuts Use auxiliary equipment as depicted in the figure Fig 7 12 Mitre cuts...

Страница 27: ...ngs may only be carried out by qualified personnel and in strict observance of the safety instructions Fig 8 1 Drive belts 8 2 Tightening replacing the drive belt Over time the drive belt will lose it...

Страница 28: ...s on the machine as the circulating saw dust would otherwise immedi ately stick to every greased or oiled surface and would hamper the sliding properties of for example the blade guidance or the belt...

Страница 29: ...develops In most cases In the event of a breakdown which creates danger for either personnel or equipment the machine should be stopped immediately by activating the emergency stop Also disconnect th...

Страница 30: ...rear support roller of the saw blade guide is defective The machine comes to a stillstand with the saw belt locked into the workpiece Stop the motor and loosen the the brake Enlarge the cutting gap wi...

Страница 31: ...31 Bands gemaschine N3700 e classic N3800 N4400...

Страница 32: ...KR Felder Str 1 A 6060 Hall in Tirol Tel 43 0 52 23 45 0 90 Fax 43 0 52 23 45 0 99 Email info hammer at Internet www hammer at...

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