Hammer N3700 e-classic, N3800, N4400 User Manual

User manual

Translation

Bandsaw

N3700 e-classic / N3800 / N4400

Keep this manual handy and in good condition for continual reference!!

Dok.ID: 500033-901_02 • Englisch • 2017-01-26

N3700 e-classic / N3800 / N4400

Note: Year of construction
The machine number of this machine will be printed on the cover sheet of this operating manual..
The final two digits of the machine number show the year of construction of this machine..
e.g. XXX.XX.XXX.15 -> Year of construction 2015

Attention! The machine must be inspected immediately upon arrival. If the machine has been damaged

!

during transport, or if any parts are missing, a written record of the problems must be submitted to the
forwarding agent and a damage report compiled. Also be sure to notify your supplier immediately.

Bandsaw

For the safety of all personnel, it is necessary to study this manual thoroughly before assembly and
operation. This manual must be kept in good condition and should be considered as part of the machine.
Furthermore, the manual must be kept to hand and within the vicinity of the machine so that it is accessi­ble to operators when using, maintaining or repairing the machine.

HAMMER A product of the FELDER GROUP!

© Felder KG

KR-FELDER-STR 1
A-6060 Hall in Tirol

Tel. [phone]
Fax. [phone]

E-Mail: [e-mail]
Internet: www.hammer.at

2

Bandsaw

N3700 e-classic / N3800 / N4400

Table of contents

Content

1 General ................................................................................................5

1.1 Symbol legend ................................................................................................ 5

1.2 Information regarding the manual ...................................................................... 5

1.3 Liability and warranty ...................................................................................... 6

1.4 Copyright ....................................................................................................... 6

1.5 Warranty notice .............................................................................................. 6

1.6 Spare parts ..................................................................................................... 6

1.7 Disposal ......................................................................................................... 7

2 Safety ..................................................................................................8

2.1 Intended use ................................................................................................... 8

2.2 Manual contents .............................................................................................. 8

2.3 Making changes and modifications to the machine .............................................. 8

2.4 Responsibilities of the operator .......................................................................... 9

2.5 Personnel requirements ..................................................................................... 9

2.6 Work 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 Operation and storage conditions ................................................................... 13

4.4 Electrical connection ...................................................................................... 13

4.5 Dust Extractors .............................................................................................. 14

5. Assembly...........................................................................................15

5.1 Overview ..................................................................................................... 15

5.2 Data plate .................................................................................................... 16

5.3 Automatic braking system ............................................................................... 16

5.4 Brake system - USA model .............................................................................. 16

6 Setup and installation .........................................................................17

6.1 Safety instructions .......................................................................................... 17

6.2 Setup ........................................................................................................... 17

6.2.1 Setting up the work table .........................................................................................18

6.2.2 Positioning the 90° end stop on the work table ...........................................................18

6.2.3 Rip fence ...............................................................................................................18

6.2.4 Positioning and levelling the machine .........................................................................19

3

N3700 e-classic / N3800 / N4400

Content

7 Operation ...........................................................................................20

7.1 Safety instructions .......................................................................................... 20

7.2 Blade selection and maintenance .................................................................... 21

7.3 Saw blade replacement/tension ...................................................................... 22

7.4 Tilting the table ............................................................................................. 22

7.5 Adjusting the saw blade guide ........................................................................ 23

7.5.1 Height adjustable protection device ...........................................................................23

7.5.2 Saw blade guide upper / down (Optional with the N3700) ........................................23

7.6 Switching on the machine / Switching off the machine ....................................... 24

7.7 Authorised working techniques ........................................................................ 24

7.7.1 Longitudinal cut along the marked line .......................................................................24

7.7.2 Cutting round 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

7.7.6 Circular cuts ...........................................................................................................26

7.7.7 Diagonal cross-cut of rectangular workpieces ..............................................................26

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8 Service ...............................................................................................27

8.1 Safety instructions .......................................................................................... 27

8.2 Tightening/replacing the drive belt .................................................................. 27

8.3 Replacing the rubber wearing surface of wheels................................................ 28

8.4 Cleaning and lubrication ................................................................................ 28

8.5 Direction of cut and parallelism ....................................................................... 28

9 Faults .................................................................................................29

9.1 Safety instructions .......................................................................................... 29

9.2 What to do if a fault develops ......................................................................... 29

9.3 What to do after rectifying the fault ................................................................. 29

9.4 Faults, causes and repairs ............................................................................... 30

10 Circuit diagrams / Spare parts ..........................................................30

4

Bandsaw

N3700 e-classic / N3800 / N4400

1 General

1.1 Symbol legend

General

Important technical safety instructions in this manual are
marked with symbols.
These instructions for work safety must be followed.

Warning!: Risk of injury or death!!

This symbol marks instructions that must be followed in order to avoid harm to one‘s health, injuries, per­manent impairment or death!

Warning!: 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. All electrical repairs must be carried out by a
qualified electrician!

Attention!: Risk of material damage!!

!

This symbol marks instructions which, if not observed, may lead to material damage, functional failures
and/or machine breakdown!

Note::

This symbol marks tips and information which should be observed to ensure efficient and failure-free op­eration of the machine.

In all these particular cases, special attention must be
paid in order to avoid accidents, injury to persons or
material damage.

1.2 Information regarding the manual

This manual describes how to operate the machine
properly and safely. Be sure to follow the safety tips and
instructions stated here as well as any local accident
prevention regulations and general safety regulations.
Before beginning any work on the machine, ensure that
the manual, in particular the chapter entitled “Safety”
and the respective safety guidelines, has been read in its

entirety and fully understood. This manual is an integral
part of the machine and must therefore be kept in the
direct vicinity of the machine and be accessible at all
times. If the machine is sold, rented, lent or otherwise
transferred to another party, the manual must accompany
the machine.

5

1.3 Liability and warranty

Bandsaw

N3700 e-classic / N3800 / N4400

General

The contents and instructions in this manual have been
compiled in consideration of current regulations and
state-of-the-art technology as well as based on our
know-how and experience acquired over many years.
This manual must be read carefully before commencing
any work on or with this machine. The manufacturer
shall not be liable for damage and/or faults resulting
from the disregard of instructions in the manual. The text
and images do not necessarily represent the delivery
contents. The images and graphics are not depicted on

1.4 Copyright

This manual should be handled confidentially. It is
designated solely for those 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 law.
This manual, in its entirety or parts thereof, may not
be transferred to third parties or copied in any way or

a 1:1 scale. The actual delivery contents are dependent
on custom-build specifications, add-on options or recent
technical modifications and may therefore deviate from
the descriptions, instructions and images contained in
the manual. Should any questions arise, please contact
the manufacturer. We reserve the right to make technical
modifications to the product in order to further improve
user-friendliness and develop its functionality.

form, and its contents may not be used or otherwise
communicated without the express written consent of the
manufacturer.
Infringement of these rights may lead to a demand for
compensation or other applicable claims. We reserve all
rights in exercising commercial protection laws.

1.5 Warranty notice

The guarantee period is in accordance with
national guidelines. Details may be found on our
website,
www.felder-group.com

1.6 Spare parts

Attention!: Non genuine, counterfeit or faulty spare parts may result in damage, cause malfunction or

!

complete breakdown of the machine.

If unauthorised spare parts are fitted into the machine,
all warranty, service, compensation and liability claims
against the manufacturer and their contractors, dealers

Note: The original spare parts that have been authorised for use are listed in a separate spare parts catalo­gue, enclosed in the documentation package supplied with the machine.

and representatives shall be rejected. Use only genuine
spare parts supplied by the manufacturer.

6

Bandsaw

N3700 e-classic / N3800 / N4400

1.7 Disposal

General

If the machine is to be disposed of, separate the compo­nents into the various materials groups in order to allow
them to be reused or selectively disposed of. The whole
structure is made of steel and can therefore be disman­tled without problem.
This material is also easy to dispose of and does not pol-

Attention!: Used electrical materials, electronic components, lubricants and other auxiliary substances must
be treated as hazardous waste and may only be disposed of by specialised, licensed firms.

lute the environment or jeopardise public health. Interna­tional environmental regulations and local disposal laws
must always be complied with.

7

2 Safety

Bandsaw

N3700 e-classic / N3800 / N4400

Safety

At the time of its development and production, the
machine was built in accordance with prevailing
technological regulations and therefore conforms to
industry safety standards.
However, hazards may arise should the machine be
operated by untrained personnel, used improperly or em­ployed for purposes other than those it was designed for.
The chapter entitled “Safety” offers an overview of all
the important safety considerations necessary to optimise

2.1 Intended use

The machine described in this manual is intended solely
for processing wood and similar machinable materials.
The machine should only be used to cut wood and wood-

Attention!: Any use outside of the machine‘s intended purpose shall be considered improper and is there­fore not permitted. All claims regarding damage resulting from improper use that are made against the
manufacturer and its authorised representatives shall be rejected. The operator shall be solely liable for
any damage that results from improper use of the machine.

safety and ensure the safe and trouble-free operation of
the machine.
To further minimise risks, the other chapters of this
manual contain specific safety instructions, all marked
with symbols. Besides the various instructions, there are
a number of pictograms, signs and labels affixed to the
machine that must also be heeded. These must be kept
visible and must not be removed.

like panels. Operational safety is guaranteed only when
the machine is used for the intended purposes.

The term “proper use” also refers to correctly observing
the operating 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 appointed to work on or with the machine must
have fully read and understood the manual before
commencing any work. This requirement must be met
even if the appointed person is familiar with the
operation of such a machine or a similar one, or has
been trained by the manufacturer. Knowledge about the
contents of this manual is a prerequisite for protecting

personnel from hazards and avoiding mistakes so that
the machine may be operated in a safe and trouble- free
manner. It is recommended that the operator requests
proof from the personnel that the contents of the manual
have been read and understood.

2.3 Making changes and modifications to the machine

In order to minimise risks and to ensure optimal perfor­mance, it is strictly prohibited to alter, retrofit or modify
the machine in any way without the express consent of
the manufacturer. All the pictograms, signs and labels af­fixed to the machine must be kept visible, readable and

may not be removed. Pictograms, signs and labels that
have become damaged or unreadable must be replaced
promptly.

8

Bandsaw

N3700 e-classic / N3800 / N4400

2.4 Responsibilities of the operator

Safety

This manual must be kept in the immediate vicinity of
the machine and be accessible at all times to all persons
working on or with the machine. The machine may only
be operated if it is in proper working order and in safe
condition. The general condition of the machine must be
controlled and the machine must be inspected for visible
defects every time before it is switched on. All instruc­tions in this manual must be strictly followed without
reservation.
Besides the safety advice and instructions stated in this
manual, it is necessary to consider and observe local

2.5 Personnel requirements

Only authorised and trained personnel may work on and
with the machine. Personnel must be briefed about all
functions and potential dangers of the machine. “Spe­cialist staff“ is a term that refers to those who – due to
their professional training, know-how, experience, and
knowledge of relevant regulations – are in a position to
assess delegated tasks and recognise potential risks. If
the personnel lack the necessary knowledge for work­ing on or with the machine, they must first be trained.
Responsibility for working with the machine (installation,
service, maintenance, overhaul) must be clearly defined
and strictly observed. Only those persons who can be
expected to carry out their work reliably may be given
permission to work on or with the machine. Personnel

accident prevention regulations, general safety regula­tions as well as current environmental stipulations that
apply to the operational range of the machine.
The operator and designated personnel are responsible
for the trouble-free operation of the machine as well as
for clearly establishing who is in charge of installing,
servicing, maintaining and cleaning the machine.
Machines, tools and accessories must be kept out of the
reach of children.

must refrain from working in ways that could harm oth­ers, the environment or the machine itself. It is absolutely
forbidden for anyone who is under the influence of
drugs, alcohol or reaction-impairing medication to work
on or with the machine. When appointing personnel to
work on the machine, it is necessary to observe all local
regulations regarding age and professional status. The
user is also responsible for ensuring that unauthorised
persons remain at a safe distance from the machine.
Personnel are obliged to immediately report any irregu­larities with the machine that might compromise safety to
the operator.

2.6 Work safety

Following the safety advice and instructions given in this
manual can prevent bodily injury and material
damage while working on and with the machine. Failure
to observe these instructions can lead to bodily injury
and damage to or destruction of the machine. Disregard
of the safety advice and instructions given in this manual

as well as the accident prevention regulations and gen­eral safety regulations applicable to the operative range
of the machine shall release the manufacturer and their
authorised representatives from any liability and from all
compensation claims.

9

N3700 e-classic / N3800 / N4400

Safety

2.7 Personal protective equipment

When working on or with the machine, the following
must be strictly observed:

Persons with long hair who are not wearing a hairnet are not permitted to work on or with the machine!

When working on or with the machine, the following must always be worn by personnel:

Protective clothes

Sturdy, tight-fitting clothing (tear-resistant, no wide sleeves, no jewellery (rings, bracelets, necklaces, etc.)).

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Protective footwear

To protect the feet from heavy falling objects and prevent sliding on slippery floors

Hearing protection

To protect against loss of hearing.

2.8 Machine hazards

The machine has undergone a hazard analysis. The
design and construction of the machine are based on the
results of this analysis and correspond to state-of-the-art
technology.
The machine is considered operationally safe when used

Warning!! Danger! Electric current!: Electrical energy can cause serious bodily injury. Damaged insulation
materials or defective individual components can cause a life-threatening electrical shock.

properly.
Nevertheless, there are some remaining risks that must be
considered.
The machine runs at high electrical voltage.

• Before carrying out any maintenance, cleaning and

repair work, switch off the machine and ensure that it
can not be accidentally switched on again.

•

When carrying out any work on the electrical equip-

ment, ensure that the voltage supply is completely

2.9 Other risks

• Hearing damage as a result of high noise levels

• Health impairments due to the inhalation of airborne

10

isolated.

• Do not remove any safety devices or alter them to

prevent them from functioning correctly.

particles, especially when working with beech and
oak wood.

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N3700 e-classic / N3800 / N4400

Declaration of Conformity

3 Declaration of Conformity

EG-Declaration of Conformity

According to Machine Guidelines 2006/42/EG

We hereby 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.

Manufacturer: Felder KG
KR-FELDER-STR.1
A-6060 Hall in Tirol

Product designation: Bandsaw

Make: HAMMER

Model designation: N3700 e-classic / N3800 / N4400

The following EC guidelines were applied: 2006/42/EG

2006/95/EG
2004/108/EG

The following harmonised norms were applied: EN 1807-1

This EC Declaration of Conformity is valid only if the CE label has been affixed to the machine.

Modifying or altering the machine without the express written agreement of the manufacturer shall render the
warranty null and void.

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The signatory of this statement is the appointed
agent for the compilation of the technical
information.

Hall in Tirol, 1.2.2013

Johann Felder, Managing Director FELDER KG
KR-FELDER-STR.1 • A-6060 Hall in Tirol

11

4 Specifications

4.1 Dimensions and weight

Bandsaw

N3700 e-classic / N3800 / N4400

Specifications

Machine (L x W x H) N3700/N3800 N4400

Total size 829 x 800 x

454 x 650 x
1750 mm 1865 mm

Package size 640 x 780 x

390 x 660 x
1820 mm 1900 mm

Net weight 150 kg 170 kg

H

B

L

Fig. 4-1: Total size

Bandsaw N3700/N3800 N4400

Cutting height 310 mm 310 mm
Rip capacity max. 360 mm 420 mm

- || - Rip fence 320 mm 377 mm
Saw blade length 3556 mm 3976 mm
Saw blade width 6 - 20 mm 6 - 25 mm
Saw blade speed 20 m/sec 20 m/sec
Wheel diameter 380 mm 440 mm
Table size 400 x 510 mm 420 x 575 mm
Tiltable table -5° max. +45° -10° max. +45°

4.2 Noise emission

The given values are emission values and not safe work­place values. Although there is a correlation between
emission and immission levels, it is not possible to state
whether increased safety measures are required.

Factors which can considerably influence the present
immission level at the workplace include the duration of
exposure, the character of the work area and other influ­ences in the neighbouring area.

Acceptable workplace values may also vary from coun­try to country. However, this information 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.

Model L Aeq LW (A) Lpc

N3800 84,5 dB (A) 93,7 dB (A) 2,3 mW < 130 dB (A)
N4400 84,7 dB (A) 97,1 dB (A) 5,1 mW < 130 dB (A)

12

Bandsaw

N3700 e-classic / N3800 / N4400

Specifications

4.3 Operation and storage conditions

Operating/room temperature +10 to +40 °C
Storage temperature –10 to +50 °C

4.4 Electrical connection

N3700/N3800 Wechselstrommotor Drehstrommotor

Motor voltage 1x 230 V 3x 400 V
motor frequency 50/60 Hz 50/60 Hz

)

Motor power S6-40 %
System of protection IP 55 IP 55

N4400 Wechselstrommotor Drehstrommotor

Motor voltage 1x 230 V 3x 400 V
motor frequency 50/60 Hz 50/60 Hz
Motor power S6-40 %
System of protection IP 55 IP 55

*

)

*

1,5 kW 1,5 kW

2,5 kW 2,5 kW

*) S6 = operation under load and intermittent service; 40% = relative operating factor

Attention! All operations may only be executed by an authorised electrical technician!
Safeguarding: see the wiring diagram

The following electrical requirements must be fulfilled:

• Earth the machine using an electrical conductor.

• The voltage regulation in the electricity network must
not exceed ± 10% of the rated voltage.

• The current supply has to be protected against da­mages e.g. armoured conduit.

• Connected vacuum hoses have to be earthed to
avoid electrostatic charges.
The electrical connection may only be carried out by
a competent and qualified person with the appropri­ate training.

Ensure that the mains supply is correct for the machine
and use connecting cables with a cross-section appropri­ate to the power consumption of the drive motor.

The minimum conductor cable size is 2,5 mm for a
400V supply. If the mains voltage is 230V or has a
rated current above 15 A, it is necessary to use higher
capacity cabling.

Connect the 3 phases with the R-S-T clamps (L1-L2­L3) and the yellow-green electrical conductor with the
earthing clamp (Pe).
When the machine is first switched on, check the rotati­onal direction and if incorrect, exchange two phases in
the connection box.
The rotational direction of one phase motors has been
set correctly by the manufacturer.
After connection, check that the connection box and
cable gland have been screwed tightly.

The dust extractor has to be connected to the machine in
such a way as to be operating automatically when the
bandsaw is switched on.

This can be achieved for example by an induction
switch in the machine supply line.

13

4.5 Dust Extractors

Bandsaw

N3700 e-classic / N3800 / N4400

Specifications

The machine has to be connected to a dust extractor. The
connection values and the position of the connection port
are shown on the picture.

The air speed at the connection point has to be a mini­mum of 20 m/s for materials with a humidity less than
12 %.

The air speed should be increased to 25–28 m/s to ex­tract dust from more humid materials (over 12 %).

Only flame resistant vacuum hoses can be used, conform­ing to DIN 4102 B1 and any other safety regulations in
effect.

!

Fig.. 4-2: Connection ports

!Connection ports 120 mm

Extraction connection-Ø 120 mm
Air speed 20 m/s
Min. depression 773 Pa
Volume flow min. 814 m³/h

14

Bandsaw

N3700 e-classic / N3800 / N4400

5. Assembly

5.1 Overview

CL

BT

Assembly

"

%

(

BP

$

BU

BO

BL

CL

Fig.. 5-1: Overview

#

BS

BQ

&

/

BM

BN

)

CN

CM

BR

!

! Machine base-frame
" Upper wheel
# Lower wheel
$ Rising part of saw blade
% Falling part of saw blade
& Upper blade guide
/ Lower blade guide (Optional)
* Blade guide height adjustment
) Work bench
BL Wheel door
BM Height adjustable protection device
BN Table insert

BO Guide fence
BPSaw blade track - Adjuster hand wheel and clamping

lever

BQLock wheel - Blade guide height adjustment
BRBlade 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 lever)

15

5.2 Data plate

Bandsaw

N3700 e-classic / N3800 / N4400

Assembly

KR-FELDER-STR.1

A - 6060 HALL in Tirol

AUSTRIA

Tel.: [phone] / 45 0 90

Tax.: 0043 (0)5223 / 45 0 99

TYPE :
NR. :

Baujahr / year of constr. / annee de constr. :
Motordaten:

Fig.. 5-2: Data plate

[e-mail] / www.hammer.at

HZ:PH:V:

A:KW:

5.3 Automatic braking system

Your machine is equipped with an automatic braking
unit. The brake is a maintenance-free DC braking unit.
All necessary adjustments are done ex factory.

The data plate displays the following specifications:

• Manufacturer information

• Model designation

• Machine number

• Voltage

• Phases

• Frequency

• Motor

• Power supply

• Year of construction

• Motor specifications

Please contact the FELDER KG service department, if
problems or a fault- function should occur!

5.4 Brake system - USA model

Fig. 5-3: Foot brake

!

The machine is equipped with a mechanical brake,
which 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 pièces d‘usure et doivent
être contrôlées régulièrement et si nécessaire échangées,
afin que le frein fonctionne dans le délai impartit.

Please contact the FELDER KG service department, if
problems or a fault- function should occur!

!Foot brake

16

Bandsaw

N3700 e-classic / N3800 / N4400

6 Setup and installation

6.1 Safety instructions

Warning! Risk of injury! Improper assembly and installation can lead to serious physical injury or equip­ment damage. For this reason, this work may only be carried out by authorised, trained personnel who
are familiar with how to operate the machine and in strict observance of all safety instructions.

Setup and installation

• Ensure that there is sufficient space to work around
the machine. Ensure there is ample distance be­tween the machine and other solid constructions
such as a walls or other machines.

• Keep the work area orderly and clean. Components

Warning! Danger! Electric current! Work on electrical fittings may only be carried out by qualified
personnel and in strict observance of the safety instructions.

Before assembling and installing the machine, check to
make sure it is complete and in good condition.

Warning! Risk of injury! An incomplete, faulty or damaged machine can lead to serious physical injury or
equipment damage. Only assemble and install the machine if the machine and its parts are complete and
intact.

Attention! 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.

and tools that are not put in their correct place or put
away may be the cause of accidents!

• Install the safety equipment according to the
instructions and check that it functions properly.

6.2 Setup

Installation site requirements:

• Operating/room temperature: +10° to +40°C.

• Ensure that the work surface is sufficiently stable and
has the proper load-bearing capacity.

• Provide sufficient light at the workstation.

• Ensure there is sufficient clearance for or from
neighbouring workstations.

• Risk of injury! Keep machines, tools and accessories
etc. out of the reach of children.

• Vacuum hoses and electrical wires should be layed
in such a way as to avoid tripping over them.

17

6.2.1 Setting up the work table

"

!

Bandsaw

N3700 e-classic / N3800 / N4400

Setup and installation

• The table insert and positioning pin have to be re­moved to set up the work table.

• Thread the work table around the saw blade and
mount to the machine using SKT screws and washers.

• Re-affix the table insert and positioning pin.

#

!Positioning pin
"Table insert

$

#Washers
$Screw

Fig. 6-1: Work table

6.2.2 Positioning the 90° end stop on the work table

• Disconnect the machine from the mains supply.

• Loosen the clamping lever.

!

#

• Tilt the work table until it rests on the stop screw.

• 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 table
"Clamping lever

Fig. 6-2: End stop

#Fence screw

6.2.3 Rip fence

!

Fig. 6-3: Rip fence

18

!

• Use a nut to mount the fence rail to the machine ta­ble.

• Slide the premounted fence onto the track.

!Nut
"Fence rail

Bandsaw

N3700 e-classic / N3800 / N4400

Setup and installation

6.2.4 Positioning and levelling the machine

Attention! Risk of material damage! Do not lift the machine by its work table, extension frames or

!

handwheels.

The machine can be transported with a crane, forklift,
pallet jack or rolling carriage.

Due to technical reasons, the machine is delivered in a
partly dismantled state.

Note:
The rolling carriage and the lifting bar (option) facilitate
the task of transporting the machine.

Fig. 6-4: Transport with a rolling carriage

Note:
There are 4 threaded holes located in the base plate of the machine where the levelling screws sup­plied with the machine can be screwed into.

!

#

"

Fig. 6-5: Floor mounting

!

Accessories Order no.:
Rolling carriage - 503-142
Lifting bar - 510-149

The following points are important for a correct and effi­cient machine installation:

• Position the machine with the aid of a spirit level to en­sure that the machine functions precisely and operates
smoothly.

• Compensate for uneven floors with the „adjusting
screws“ or bolster the machine.

• The machine should be bolted to the floor with M10
screws for optimum stability, however take care not to
overtighten the fastening bolts as this will increase vi­brations. It is advisable to place vibration dampening
pads 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 between other ma­chines, leave at least 80 cm distance in-between, in
order to avoid collisions when cutting large workpi­eces and to allow the use of equipment such as roll
supports and additional tables.

!Screws
"Adjusting screw
#Locking nut

19

7 Operation

7.1 Safety instructions

Warning! Risk of injury! Improper operation may lead to severe physical injury or material damage. For
this reason, this work may only be carried out by authorised, trained personnel who are familiar with how
to operate the machine and in strict observance of all safety instructions.

Bandsaw

N3700 e-classic / N3800 / N4400

Operation

Before starting work:

• Before assembling and installing the machine, check
to make sure it is complete and in good condition.

• Ensure that there is sufficient space to work around
the machine.

• Keep the work area orderly and clean. Components
and tools that are not put in their correct place or put
away may be the cause of accidents!

• Ensure that all safety devices have been installed
properly.

• Adjustments to the machine or tool replacement may
only be conducted once the machine has stopped.

• Only clamp authorised tools to the machine.

• Install the dust extraction system according to the
instructions and test its function.

• Only machine workpieces that can be safely placed
on the machine and guided.

• Carefully inspect workpieces for foreign matter (nails,
screws) which might impair processing.

• Support long workpieces with additional surface
equipment (e.g. Table extensions, roll supports).

• Ensure that each unit is rotating in the proper direc­tion.

• Keep tools for handling short and narrow workpieces
close at hand.

• Before switching on the 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 off the machine and
then secure it against being switched on again
accidentally.

• Do not switch off, circumvent or decommission
protective and safety devices during operation.

• Do not overload the machine! It is safer and performs
better if operated within its power range.

When working on or with the machine, the following
must be strictly observed:

• Persons with long hair who are not wearing a hairnet
are not permitted to work on or with the machine!

• It is prohibited to wear gloves while working on or
with the machine.

When working on or with the machine, the following
must always be worn by personnel:

• Sturdy, tight-fitting clothing (tear-resistant, no wide
sleeves, no jewellery (rings, bracelets, necklaces,
etc.)).

• Protective footwear To protect the feet from heavy
falling objects and prevent sliding on slippery floors

• Hearing protection To protect against loss of hearing.

20

Attention! 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.

Improper use such as cutting too tight a radius or with too much cutting pressure could cause friction and
lead to sparks being generated by the blade guides.

In order to prevent sparks being generated, it is recommended that Super Glide (article number 10.0.010)
is used on a regular basis (sprayed on to the guides).

Bandsaw

N3700 e-classic / N3800 / N4400

7.2 Blade selection and maintenance

Selecting the type of saw blade and its width, depends on the material to be cut and the type of cut:

• Narrow saw blades are designed for curved and circular cuts, whereas wide saw blades are desi­gned for straight cuts.

• A fine-toothed saw blade is required for hard wood, whereas a coarse-toothed saw blade is required
for soft wood.

Operation

The following saw blades may be used:

#

40

10 15 20

150

100

!

Fig. 7-1: Saw blades

!Blade width
"Radius cut
#Tooth spacing

200

25

"

!

N3700/N3800 - Saw blade length: 3556 mm

Art. No. Blade width Tooth spacing

13.7.3806 6 mm 4,0 mm

13.7.3810 10 mm 6,0 mm

13.7.3815 16 mm 8,0 mm

13.7.3820 20 mm 8,0 mm

N 4400 - Saw blade length: 3980 mm

Art. No. Blade width Tooth spacing

13.7.3406 6 mm 6,0 mm

13.7.3410 10 mm 8,0 mm

13.7.3415 16 mm 8,0 mm

13.7.3420 20 mm 8,0 mm

13.7.3425 25 mm 9,0 mm

The gap between the individual teeth should be large
enough to carry the material chips and to throw them
away. If the gap is too small, the blade will overheat and
rupture.

Fig. 7-2: Scale

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 surface of the wheels.

DO NOT

USE !

Do not use kinked, ruptured or bent saw blades.

For soft wood, the set should be a max. of twice the
thickness of the saw blade and for hard wood, a max. of

1.5 times the thickness of the saw blade.

Change blunt blades and have them sharpened by a
specialist workshop or purchase a new saw blade.

It is recommended to use only high quality saw blades.

21

7.3 Saw blade replacement/tension

mm

> 16

6 -16

!

min 3 mm

1/2 1/2

"

Operation

1. Disconnect the machine from the mains supply.

2. Remove table insert and positioning pin.

3. Loosen the blade tension hand wheel by turning it

#

4. Place new saw blade over both wheels (note the di-

$

%

5. Turn the wheels manually and ensure that the saw

6. Clamp the clamping lever.

Bandsaw

N3700 e-classic / N3800 / N4400

Open wheel door.

clockwise. Unthread old blade through the machine
table.

rection of the cut!).
Release the clamping lever and set the saw blade
track using the hand wheel: see sketches

belt glides properly around the wheels and does not
collide with any solid machine parts.

Check the saw blade tension and if required, adjust
with the hand wheel. The values refer to the saw bla­de width.

&

Fig. 7-3: Saw blade replacement

7.4 Tilting the table

!

$

/

%

!Positioning pin
"Table insert
#Handwheel - Saw blade track
$Clamping lever
%Blade tension hand wheel
&Scale
/Securing bolt (Optional equipment)

The machine working table can be tilted up to an angle
from -5° (N4400: -10°) up to +45°.

Adjusting the angle:

To tilt, remove the table padding to enable the saw belt
to move through the table unimpeded. Open the clam­ping screw with the supplied spanner and tilt the table to
the desired angle, which is displayed on the mitre scale.
Tighten the clamping screw again.

"

Fig. 7-4: Tilt

!Work bench
"Clamping lever
#Lever
$Fence - 0°

22

#

Tilt -5° or -10°:

• Swing away the stop

• Adjusting the angle

To tilt the table back to its normal position, loosen the
clamping screw once again and tilt the table up to the
stop in the 0° position and clamp it in that position.
(Swing back the stop)

Bandsaw

N3700 e-classic / N3800 / N4400

Operation

7.5 Adjusting the saw blade guide

Warning! Risk of injury!
Do not change settings whilst the machine is in operation!

7.5.1 Height adjustable protection device

!

"

The upper saw blade guide has to be lowered as
closely as possible to the work-piece (5–10 mm). To set
the height, open the clamping screw and turn the hand
wheel until the desired height has been reached. Tighten
the clamping screw once again.

!Clamping screws
"Blade guide height adjustment

Fig. 7-5: Bearings

7.5.2 Saw blade guide upper / down (Optional with the N3700)

The side guide rollers should touch the saw blade slightly
so as to obtain a straight and vibration-free cut.

"

The rear support roller prevents the saw blade thrusting

#

#

backwards whilst cutting.

To adjust the position of the rollers, simply loosen the
clamping screw.

!

!Bearings
"Support roller
#Clamping screws

#

Fig. 7-6: Saw blade guide

!

"

23

Operation

7.6 Switching on the machine / Switching off the machine

Warning! Risk of injury due to insufficient preparation!
It is only permitted to switch on the machine if, for the work at hand, the required preconditions are
fulfilled and any preliminary work is completed. Therefore, the adjusting, fitting and operating instructions
(see the corresponding chapters) must be read before switching on the machine.

Attention! The machine will not start with the doors open and will automatically stop if doors are opened

!

during operation. (Only valid for the CE-version !)

The bandsaw has an On- and Off switch.
Green push button:

Switch machine on

Bandsaw

N3700 e-classic / N3800 / N4400

!

"

Fig. 7-7: On- and Off switch

7.7 Authorised working techniques

Red push button:

Switch off the machine.

Optional equipment: Additional emergency stop

! On/Off switch
" Additional emergency stop

7.7.1 Longitudinal cut along the marked line

Fig. 7-8: Rip cut

24

All uses which differ from the following work techniques
have not been intended for this machine and are therefore
not authorised.

Feed the workpiece with constant speed and pressure for­wards without applying sideways pressure Do not interrupt
the cut and do not pull the workpiece backwards When
cutting large pieces, use appropriate table extensions or
roll supports.

Bandsaw

N3700 e-classic / N3800 / N4400

Operation

7.7.2 Cutting round workpieces in the transverse direction

Use an appropriate device with the minimum measure­ments as depicted in Fig. to avoid the workpiece twisting
during the cutting process.

Fig. 7-9: Cutting a circular workpiece

7.7.3 Cutting workpieces on the upright edge

Use an auxiliary fence with the minimum measurements
to guide the workpiece safely.

Fig. 7-10: Auxiliary fence

7.7.4 Longitudinal cut of narrow or thin workpieces with the longitudinal guide fence

Use a push stick as depicted in Fig. to prevent your
hands from coming too close to the saw blade.

!

Fig. 7-11: Push stick

!Push stick

25

7.7.5 Mitre cuts

Fig. 7-12: Mitre cuts

Bandsaw

N3700 e-classic / N3800 / N4400

Operation

Use auxiliary equipment as depicted in the figure.

7.7.6 Circular cuts

Use auxiliary equipment as depicted in the figure.

Accessories Order no.:

01.1.300

Fig. 7-13: Circular cuts

7.7.7 Diagonal cross-cut of rectangular workpieces

Use auxiliary equipment as depicted in the figure.

Fig. 7-14: Cross cut

26

Bandsaw

N3700 e-classic / N3800 / N4400

8 Service

8.1 Safety instructions

Warning! Risk of injury! Improper adjustment and setup work can lead to serious physical injury or
material damage. For this reason, this work may only be carried out by authorised, trained personnel who
are familiar with how to operate the machine and in strict observance of all safety instructions.

Service

• Before beginning any maintenance work on the
machine, switch it off and secure it against acciden­tally being switched on again.

• Before commencing any work with the machine,
inspect it to ensure that it is complete and in
technically good condition.

Warning! Danger! Electric current! Work on electrical fittings may only be carried out by qualified
personnel and in strict observance of the safety instructions.

8.2 Tightening/replacing the drive belt

Over time, the drive belt will lose its capacity to transmit
power. At this point, the drive belt must be re-tensioned
or replaced.

"

• Ensure that there is sufficient space to work around
the machine.

• Keep the work area orderly and clean. Components
and tools that are not put in their correct place or put
away may be the cause of accidents!

• Install the safety equipment according to the
instructions and check that it functions properly.

The drive belt must be inspected monthly; if tears are
discovered, the drive belt must be replaced.

Following the first few operating hours, the belt tension
has to be controlled, as the belt will extend.

To check the tension, press inwards onto the belt in the
middle with a weight of 3-4 kg.
The belt deflection should not be more than 5-6 mm.

Fig. 8-1: Drive belts

! Nu t
" Tightening screw

Attention! Risk of material damage! Do not over-tension the drive belt! Stop turning the belt-tensioning

!

screw once the drive belt is tensioned sufficiently, enabling it to transmit power effectively.

!

Retensioning the drive belt:

1. Loosen the nuts.

2. Use the belt tensioning screw to tension the drive belt.

3. Tighten the nuts.

It is important to always maintain the correct belt tension,
as belts which are too loose will weaken the drive power
and the brake power and belts which are overtightened
will lead to overheating.

27

Service

8.3 Replacing the rubber wearing surface of wheels

Its highly recommended that this work is only carried out
by a specialist or the manufacturer.

Removing the saw blade See chapter entitled: Saw blade
replacement/tension

1. Remove the old wheel surface.

2. Attach and fix the new tread to the lower side of the

wheel. (use cable ties if required)

3. Slide the tread over the top of the wheel.

4. Remove the fixing.

5. Ensure that the rubber wearing is seated properly with

a few manual turns!

Bandsaw

N3700 e-classic / N3800 / N4400

!

Fig. 8-2: Disassembling the upper wheel

8.4 Cleaning and lubrication

Clean the inside of the machine regularly with a vacuum
to remove saw dust deposits and remove resin deposits
from the wheel surfaces. The wheel bearings are sealed
and do not need to be lubricated again.
It is not necessary to grease any parts on the machine,
as the circulating saw dust would otherwise immedi­ately stick to every greased or oiled surface, and would
hamper the sliding properties of, for example, the blade

8.5 Direction of cut and parallelism

"

!Cable ties

guidance or the belt tension unit. Regularly control the
cleanliness of the wheel wearing surfaces, especially af­ter resinous materials or chipboards have been cut. Only
clean the wearing surfaces once the machine is idle and
ensure that the wearing surfaces are not damaged dur­ing the process.

If the cut, using the longitudinal stop, is still not parallel,
the following are possible causes:

• Incorrect saw belt grinding and set

• Insufficient saw belt tension

• Incorrect longitudinal stop setting in relation to the
saw belt.

#

Fig. 8-3: Direction of cut and parallelism

28

!

Set the fence plate (guide):

1. Loosen the lock nuts.

2. Correct the position with the slotted round nut if requi-

red.

3. Tighten the lock nuts.

!Locking nuts
"Adjusting nut
#Fence plate

Bandsaw

N3700 e-classic / N3800 / N4400

9 Faults

9.1 Safety instructions

Warning! Risk of injury! Repairing faults incorrectly can result in personal injury or damage to the ma­chine. For this reason, this work may only be carried out by authorised, trained personnel who are famil­iar with how to operate the machine and in strict observance of all safety instructions.

Warning! Danger! Electric current! Work on electrical fittings may only be carried out by qualified
personnel and in strict observance of the safety instructions.

Faults

9.2 What to do if a fault 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 the machine from the mains and

ensure it can not be switched on again.

9.3 What to do after rectifying the fault

Warning! Risk of injury!

Before switching the machine back on:

• The fault and its cause are professionally repaired.

• All safety equipment has been assembled according
to regulations and is working correctly.

• Individuals are not located within the danger area of
the machine.

• Inform those responsible for machine faults

immediately.

• Type and extent of fault should be determined by an

authorised professional, as well as the cause and
repair.

29

9.4 Faults, causes and repairs

Bandsaw

N3700 e-classic / N3800 / N4400

Faults

Fault

Machine does not start Safety break switches are breaking the electric circuit

Squeaking noises when starting up Insufficient tension (Drive belt)

The cuts are not straight Check sharpness and set of saw blade

The saw blade is torn at the base of
the individual teeth

The saw blade is rupturing on the
rear side

The machine comes to a stillstand
with the saw belt locked into the
workpiece

The saw belt is straying forwards
and backwards

The saw blade is slipping to the
back at the beginning of the cut

Cause and problem elimination

Ensure that the side doors are closed properly
Emergency stop switch engaged

Unlock the emergency stop switch

Retensioning the drive belt

Check the guide fence alignment
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


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
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 belt is not aligned with the welded joints
 Saw blade replacement

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

✆

Felder

10 Circuit diagrams / Spare parts

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

30

Bandsägemaschine

N3700 e-classic / N3800 / N4400

31

KR-Felder-Str. 1
A-6060 Hall in Tirol
Tel.: [phone] / 45 0 90
Fax: [phone] / 45 0 99
Email: [e-mail]
Internet www.hammer.at