Huvema HU 331 DGH User manual

HU 331 DGH
BANDSAW/MACHINES

2CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED
TABLE OF CONTENTS
1 ACCIDENT PREVENTION AND SAFETY REGU
LATION..................................................................1
1.1 Advice for the operator........................................................................................................
.................1
1.2 The electrical equipment according to European Standard" CENE
LEC EN 60204-1"........................1
1.3 Warning labels .................................................................................................................
....................1
1.4 Emergencies according to European Standard “CENELEC
EN 60204-1” ..........................................1
2 MACHINE TRANSPORTATION
AND INSTALLATION.......................................................................2
2.1 Machine dimensions .............................................................................................................
...............2
2.2 Transporting the machine .......................................................................................................
.............2
2.3 Minimum requirements for housing the ma
chine.................................................................................2
2.4 Unpacking and Checking Contents................................................................................................
......2
2.5 Installing the rear coolant return tray ........................................................................................
...........2
2.6 Attaching the mobile cover.....................................................................................................
..............3
2.7 Installing the stop rod assembly...............................................................................................
............3
2.8 Securing to foundation .........................................................................................................
................4
2.9 Leveling the machine ...........................................................................................................
................4
2.10 Deactivation of machine........................................................................................................
...............4
3 DESCRIPTION OF
MACHINE PARTS................................................................................................4
3.1 Control panel..................................................................................................................
......................4
3.2 Indicator lights...............................................................................................................
.......................5
3.3 The saw bow ....................................................................................................................
....................5
3.4 The vise system ................................................................................................................
...................5
3.5 The base .......................................................................................................................
.......................5
3.6 Chip tray......................................................................................................................
.........................5
3.7 Blade broken micro switch ......................................................................................................
.............5
3.8 Chip brush.....................................................................................................................
.......................5
3.9 Blade speed indicator ..........................................................................................................
................6
3.10 Speed change dial ..............................................................................................................
.................6
3.11 Blade angle scale..............................................................................................................
...................6
3.12 Attached coolant device........................................................................................................
...............6
3.13 Confirm the blade tension ......................................................................................................
..............6
4 SET UP AND PRE-OPERAT
IONS ......................................................................................................7
4.1 Adjusting the tungsten carbide guides..........................................................................................
.......7
4.2 Blade tracking adjustment......................................................................................................
..............7
4.3 Placing the saw blade onto the drive wheel and flyw
heel....................................................................7
5 OPERATION PREPARATIO
NS...........................................................................................................8
5.1 Setting the bow stroke limit ...................................................................................................
...............8
5.2 Positioning the vise ...........................................................................................................
...................8
5.3 Angle cutting ..................................................................................................................
......................8
5.4 Adjusting the blade speed......................................................................................................
..............9
5.5 Changing the transmission belt.................................................................................................
...........9
5.6 Selecting Automatic and Manual o
peration .........................................................................................9
5.7 Changing the blade.............................................................................................................
.................9
5.8 Laser guide device (optional)..................................................................................................
.............9
5.9 Install the vertical press on the vise jaws for bundle cutting (opti
onal)..............................................10
6 OPERATION CYCLE................................................................................................................
.........10
6.1 Operation cycle ................................................................................................................
..................10
6.2 Stopping or emergency stopping .................................................................................................
......11
6.3 Automatic shutoff during machine op
eration .....................................................................................11
7 ROUTINE AND SPECIAL MAINTENANCE
.......................................................................................11
7.1 Daily maintenance..............................................................................................................
................11
7.2 Weekly maintenance.............................................................................................................
.............11
7.3 Monthly maintenance............................................................................................................
.............11
7.4 Six-monthly maintenance........................................................................................................
...........11
7.5 Oils for lubricating coolant...................................................................................................
...............11
7.6 Oil disposal...................................................................................................................
......................11
7.7 Special maintenance............................................................................................................
..............12
7.8 Changing gear oil..............................................................................................................
.................12
8 TECHNICAL CHARA
CTERISTICS....................................................................................................12
8.1 Table of cutting capacity and technical details ................................................................................
..12
8.2 NOISE TESTS ....................................................................................................................
...............13
9 CIRCUIT DIAGRAM................................................................................................................
...........14
10 PART LIST & EXPLOSION DRAWI
NGS...........................................................................................17

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CHANGES AND TYPING ERRORS RESERVED
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Bandsaw machine hU 331 dGh
a.
General safety rUles for all machines
N.B.: Read the instructions carefully in order to avoid any problems.
As with all machinery there are certain hazards involved with operation and use of this machine. Using the machine
with respect and caution will considerably lessen the possibility op personal injury. However, if normal safety
precautions are overlooked or ignored, personal injury to the operator may occur. Observe these rules insofar as they
are applicable to this particular machine.
This machine was designed for certain applications only. We strongly recommend that this machine NOT be modified
in any way and/or used for any application other than for which it was designed.
If you have any questions relative to its application DO NOT use the machine until you have contacted your dealer.
1. For your own safety read the instruction manual before operating the tool.
2. Keep all guards in place and in working order.
3. Ground all tools.
4. Remove adjusting keys and wrenches. Make a habit of checking the machine before turning it on.
5. Keep the work area clean. Cluttered areas and benches invite accidents.
6. Do not use in a dangerous environment, such as damp or wet locations or expose to rain. Always keep the work
area well-lit.
7. Keep children and visitors away. They must be kept at a safe distance from the machine at all times.
8. Make sure that the work area is not accessible to unauthorised persons. Use padlocks, master switches, remove
starter keys etc.
9. Never overload the machine. The capacity of the machine is at its largest when properly loaded.
10. Do not force the machine or attachment to do a job for which it was not designed.
11. Wear proper apparel. No loose clothing, gloves, neckties, rings, necklaces, bracelets or jewellery: they may get
caught in moving parts. No slip footwear is recommended. Wear a hairnet to contain long hair.
12. Always wear safety glasses and work according to safety regulations. Use a face or dust mask if operation is
dusty.
13. Always secure workpiece tightly using a vise or clamping device. This will keep both hands free to operate the
machine.
14. Do not overreach. Keep your proper footing and balance at all times.
15. Maintain tools in top condition. Keep them sharp and clean. Read the instructions carefully and follow the
instructions for cleaning, lubrication and tool replacement.
16. Lubricate the machine and fill all oil reservoirs before operation.
17. Disconnect tools before servicing and when changing accessories such as blades, bits, cutters etc.
18. Use only recommended accessories. Consult the owner’s manual for recommended accessories. The use of
improper accessories may cause hazards.
19. Avoid accidental starting. Make sure the on/off switch is in the “OFF” position before plugging in the power cord.
20. Never stand on the machine or tools. Serious injury could occur if the machine is tipped or if the cutting tool is
accidentally touched.
21. Check damaged parts. Replace or repair damaged parts immediately. Check machine for alignment of moving
parts, binding of moving parts, breakage of parts, mounting and any other conditions that may affect its
operation.
22. Direction of feed. Feed work into a blade or cutter against the direction of rotation of the blade or cutter only.
23. Never leave tool running unattended. Do not turn power off until it has come to a complete stop.
24. Alcohol, medication, drugs. Never us the machine while under the influence of alcohol, medication or drugs.
25. Make sure the tool is disconnected from the power supply, before servicing, repairing etc.
26. Keep the original packing for future transport or relocation of the machine.

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B.
additional safety rUles
Always keep in mind that:
• the machine must be switched off and disconnected from the power supply during maintenance and repairs,
• clamped workpieces may only be measured when the machine is switched off.
Never lean over the machine, mind loose clothing, ties, jewellery etc. and wear a cap.
Do not remove safety devices or guards. Never use the machine while a guard is open.
Always use safety glasses for machining rough materials.
Burrs and chips should only be removed using a sweeper or other aid, never with your bare hands!
Never leave the machine running unattended.
Always wear safety glasses!

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1
1 ACCIDENT PREVENTION AND
SAFETY REGULATION
This machine has been designed to comply with
national and community accident- prevention
regulations. Improper use and/or tampering with
the safety devices will relieve the manufacturer of
all responsibility.
1.1 Advice for the operator
- Check, the line voltage is the same as the
voltage required by the machine’s motor.
- Check the efficiency of your electric supply and
grounding system; connect the power cable of
the machine to the socket and the ground lead
(yellow- green in color) to the grounding system.
- When the machine is in suspended mode (or
stopped) the blade must not move.
- Only the blade section used for cutting must be
kept unprotected. To remove guards to expose
more of the cutting blade adjust the blade guides.
- It is forbidden to use the machine without its
shields
- Always disconnect the machine from the power
socket before blade change or carrying out any
maintenance job, even in the case of abnormal
machine operation.
- Always wear suitable eye protection.
- Never put your hands or arms into the cutting
area while the machine is operating.
- Do not shift the machine while it is cutting.
- Do not wear loose clothing like: shirts with
sleeves that are too long, gloves that are too big,
bracelets, chains or any other object that could
get caught in the machine during operation. Tie
back long hair.
- Keep the area free of miscellaneous object; i.e.
equipment, tools, etc…
- Perform only one operation at a time. Never
have several objects in your hands at the same
time. Keep your hands as clean as possible.
- All internal operations, maintenance or repairs,
must be performed in a well-lit area or where
there is sufficient light from extra sources to
avoid the risk of accidents.
1.2 The electrical equipment according to
European Standard" CENELEC EN
60204-1"
- The electrical equipment ensures protection
against electric shock as a result of direct or
indirect contact. The active parts of this
equipment are housed in a box to which access
is limited by screws that can only be removed
with a special tool; the parts are fed with
alternating current as low voltage (24V). The
equipment is protected against splashes of
water and dust.
- Protection of the system against short circuits is
ensured by means of rapid fuses and grounding;
in the event of a motor overload, protection is
provided by a thermal probe.
- In the event of a power cut, the specific start-up
button must be reset.
- The machine has been tested in conformity with
point 20 of EN 60204
1.3 Warning labels
Replace warning labels if they become obscured
or removed.
- Keep hands and other body parts away from a
running blade.
- Do not open the blade cover while machine is
running.
- Do not store combustible materials near or
around machine.
- Always wear approved safety glasses/face
shields while using this machine.
- Keep machine guards in place at all times.
- Do not wear gloves.
- Remove loose clothing and confine long hair.
- Keep the work area clean and free
miscellaneous objects.
1.4 Emergencies according to European
Standard “CENELEC EN 60204-1”
- In the event of incorrect operation or a danger
condition, the machine may be stopped
immediately by pressing the red mushroom
shaped button.
NOTE: Resetting of machine operation after each
emergency stop requires resetting the emergency
stop button.

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2 MACHINE TRANSPORTATION AND
INSTALLATION
2.1 Machine dimensions
2.2 Transporting the machine
Unpack your machine carefully, and use a forklift
to set it in position. If a crane is used to lift the
machine, attach the lifting cable carefully to the
machine. Sufficient space should be left around
the machine to allow safe handling of materials,
inspection, and maintenance operations. Take
precautions to choose a location that will keep the
machine free of vibration and dust caused by other
machinery.
2.3 Minimum requirements for housing the
machine
- Main voltage and frequency must comply with
the machine’s motor requirements.
- Environment temperature should fall within
(-10ºC to + 50 ºC).
- Relative humidity cannot be over 90%.
2.4 Unpacking and Checking Contents
The Metal Saw is shipped complete in one carton.
Separate all parts from packing material and
check each item with illustration and “Table of
Loose Part” Make certain all items are accounted
for, before discarding any packing material.
WARNING: If any parts are missing, do
not try to assemble the metal saw, plug in
the power cable or turn the switch on until
the missing parts are obtained and installed
correctly.
ITEM TABLE OF LOOSE PARTS Q’TY
A Rear coolant return tray 1
B Retrievable cover 1
C Stop Rod Assembly 1
D Instruction Manual 1
E Tool box 1
2.5 Installing the rear coolant return tray
The rear coolant-return tray must be installed after
the machine is set in place. Install the coolant
return trays first.
- Installing three channeled L-bracket
Install three channeled L-bracket to the back of the
machine stand. Attaching the brackets requires 6
hex head bolt, 6 spring washers, 6 washers, and 6
nuts.
- Place a spring washer and washer on each hex
head bolt.
- Face the long side of the bracket up.
- Align the holes of short side of the bracket to the
machine panel’s holes.
- Place the 2 hex head bolts and their washers
through each bracket and machine panel.
- Use a nut on the inside of the machine stand to
secure each hex head bolt.

7
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3
- Securing the rear tray
Attaching the trays requires 6 hex head bolt, 6
spring washers, 6 washers, and 6 nuts.
- Arrange the tray rims to facing up and away
from the machine.
- Place the rear return tray onto brackets at the
back of the machine.
- Align the holes of the rear tray and the six-
channeled L-brackets.
- Place 6 hex head bolts through the holes of the
trays and brackets.
- Secure each hex head bolts with a washer,
spring washer, and hex nut.
2.6 Attaching the mobile cover
The mobile cover was moved before shipping,
replace it again after installed machine already.
- Unlock swiveling control panel lock handle to
swivel the control panel out of the machine base.
There are four slots on the cover base. Install the
mobile cover to the four slots and push it to the
right side to secure it.
Remove mobile cover by lift handle up and pull it
out from the base as showing direction when in
this way miter cutting or position the vise to this
side for another way miter cutting.
2.7 Installing the stop rod assembly
The stop rod assembly was removed before
shipping; replace it again after installed machine
already.
- There are two screws attached on the right side
of the fixed retrieval device.
- Place the stop rod assembly and tighten it with
two screws as picture.
- Loosen the handle can adjust the position of the
stop rod to set the cutting length.
Bolt
point
Lock handle
Handle
The stop rod assembly
Mobile cove
r

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4
2.8 Securing to foundation
Position the machine on a flat and level foundation
of reinforced concrete. Level machine and anchor
it to the foundation with anchor bolts. Maintain a
minimum distance of 800mm from the rear of the
machine to the wall. Position the anchors using
screws and expansion plugs or tie rods sunk in
cement.
2.9 Leveling the machine
The operating accuracy of all precision machinery
depends on the accuracy of the installation of the
machine. Manufacturing tolerance of the machine
can only be guaranteed if the machine is firmly
and properly installed. Once the machine is
lowered on the prepared foundation, machinist
levels should be used alternately on the vice slide
plates and work feed table, adjust the left to right
and front to back level of the machine with leveling
bolts.
- When leveling left to right level, adjust left side to
be approximately 3mm higher than the level of the
right side. This will provide proper return of the
cutting fluid. After proper leveling of the machine,
use anchor bolts to secure to the foundation.
Caution: All leveling bolts should support the
weight the machine evenly.
2.10 Deactivation of machine
If the machine is to be out of use for a long period,
it is advisable to proceed as follows:
1) Disconnect from the power supply
2) Loosen the tension on the blade
3) Release the bow return spring
4) Empty the coolant tank
5) Carefully clean and grease the machine
6) If necessary, cover the machine.
Dismantling (due to deterioration and/or
obsolescence)
As a General Rule,
If the machine is to be permanently demolished
and/or scrapped, divide the material to be
disposed of according to type and composition, as
follows:
1) Cast iron or ferrous materials,composed of
metal alone, are secondary raw materials, so
they may be taken to an iron foundry for re-
smelting after having removed the contents
(classified in point 3).
2) Electrical components, including the cable and
electronic material (magnetic cards, etc.), fall
within the category of material classified as
being assimilated to urban waste according to
the laws of your local, state, or federal
government, so they may be set aside for
collection by the public waste disposal service;
3) Old mineral and synthetic and/or mixed oils,
emulsified oils and greases are considered
hazardous or special refuse, so they must be
collected, transported and disposed of at a
special waste disposal service.
NOTE: The standards and legislation concerning
refuse is in a constant state of evolution, therefore
is subject to changes. The user must keep
informed of the regulations at the time of disposal
as these may differ from those described above.
3 DESCRIPTION OF MACHINE PARTS
3.1 Control panel
A. Main connect switch – main power
B. Main power indicator light – indicates that main
power is active
C. Hydraulic flow control start switch – actives
hydraulic power
D. Operation mode switch – selects either
automatic or manual operation mode.
D1. Manual operation mode – press switch D until
the manual mode’s indicator light shows up.
D2. Automatic operation mode – press switch D
until the automatic mode’s indicator light
shows up.
E. Bow up switch – press to raise the saw bow
F. Vise open switch – press to open the vise
G. Vise close switch – press to close the vise
H. Bow down switch – press to lower the saw
bow
I. Cycle start switch – press to begin operation
J. Stop switch – press to stop operation cycle
and return to start position
K. Cutting feed rate – adjust the rate of cutting of
the saw bow.
L. Key lock power switch – to start or stop power.
L0. Power off switch – key switch to turn power off
L1. Power on switch – key switch to turn power on
M. Emergency Stop Button – Press to stop all
machine functions
N. Blade tracking switch – press to activate blade
tension and set the blade tracking.
O. Coolant start switch – press to activate or stop
coolant flow
P. Counter – counts the pieces cut, press the
button to reset units to zero.
Q. Stroke height switch – limits the stroke height
to eliminate the wasted motion and time. The
stroke height setting is according to material
height. Maximum height limit is 330mm (13”).

9
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5
3.2 Indicator lights
1. Coolant pump warning light
2 Hydraulic pump warning light
3. Vise pressure warning light
4. Open blade cover warning light
5. Broken blade warning light
6. Main motor warning light
7. Lower stroke limit indicator light
8. Upper stroke limit indicator light
9. Emergency stop indicator light
3.3 The saw bow
Machine parts consisting of drive members (gear
motor, variable speed motor, and flywheels),
tightening and guide (blade tightening slide, blade
guide blocks) of tool.
3.4 The vise system
This machine requires the use of two vises to
perform the hydraulic feed operation. The vise
system consist of a hydraulic vise for clamping
work material. Each of the vises has a miter slot,
which is good for the right or left side’s angle
cutting to 60°.
3.5 The base
The base is the structure supporting the saw bow
(the bow pivot point and respective blocking
system), the vises, and containing chip tray and
coolant system.
3.6 Chip tray
Removable chip tray is for capture of chips and
debris.
3.7 Blade broken micro switch
This machine is equipped with automatic power
shut-off safety device to prevent any further
damage when a blade has been broken. There is
a reduction in tension when an adjustment bolt
actuates micro switch’s plunger. To keep the
micro switch in proper contact with the blade’s
tension. An adjustment of the actuator bolt is
required.
3.8 Chip brush
This model has a powered chip brush driven by an
axle transfer from the drive wheel. The chip brush
is designed to clean the blade thus prolonging the
life of the blade.

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3.9 Blade speed indicator
A digital display indicates the blade speed in MPM
(FPM). This works in conjunction with speed
changing dial to give you precise control of blade
speed.
3.10 Speed change dial
The speed change dial adjusts the variable speed
transmission so that there is a change in blade
speed. Change only while blade is moving.
This machine has a variable speed transmission
using a variable pulley - system. The speed is
changed by rotating the speed changer dial to
adjust the width of the pulley discs. When
compressed, the pulley discs cause the belt to ride
the outer edge of pulley discs and changing the
speed. The speed must be changed while belt is
moving.
3.11 Blade angle scale
The scale indicates the cutting angle of the blade.
The scale has preset stops at every 15.
3.12 Attached coolant device
An attached coolant device that is screwed on the
front vise jaw for supply enough coolant to the
cutting material. This device can be unscrewed,
and move to the rear vise jaw for easy both side
miter cutting.
3.13 Confirm the blade tension
The blade tension has been loosen a little bit
before shipping, re-tension it clockwise to make
sure the tension gauge point to the 331 line before
using the machine.

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7
4 SET UP AND PRE-OPERATIONS
4.1 Adjusting the tungsten carbide guides
The blade is guided by the upper ball bearings,
side ball bearings, and tungsten carbide guides.
- When ready to cut the work piece, the carbide
guide must be adjusted by adjusting the screws
to properly compressed blade. The tungsten
carbide blades should touch, but not pinch the
blade.
- For moving the blade guide posts or changing
blade, the tungsten carbide guides should be
released by using the adjusting screw.
In case the blade needs to be replaced, make sure
to always install 1.1mm (0.043”) thick blade.
4.2 Blade tracking adjustment
This adjustment must be accomplished by
qualified personnel that are familiar with this type
of adjustment and the dangers associated with it.
Blade tracking has been set at the factory and has
no adjustment required. If a tracking problem
occurs, adjust the machine as follows:
- Raise saw arm to the proper position.
- Locate tracking adjustment screw (V) on the
front of the saw blade, flywheel side.
- Reduce the blade tension a little.
- Turn the tracking adjustment screw (V) to adjust
the saw blade ride.
- Retension the blade tension.
- Connect the machine power to run the blade for
1-2 minutes. Then stop the machine operation.
- Remove the blade guides and open covers to
check the blade tracking
- Close covers, replace the blade guides and
tighten the setscrews.
- If necessary, readjust it again.
4.3 Placing the saw blade onto the drive
wheel and flywheel
- Disconnect from power supply
- Remove the blade guards
- Turn the blade tension handle counter-clockwise,
to fully loosen the flywheel.
- Open the blade cover and place the saw blade
onto the race of the drive wheel and flywheel.
*Check the cutting direction of the saw blade.
- Insert the saw blade into the rollers of the left
and right blade guide.
- The back edge of the saw blade should make
contact with the flange of the drive and flywheel;
turn clockwise the blade tension handle to
tighten the saw blade, until the blade is properly
tensioned.
- Replace the blade guards.
- Use the blade running switch 3.1N to check the
proper ride of the blade.
4.4 Hydraulic vise pressure
The hydraulic pressure gauges for the vise located
on the rear of the base.
Located just below the gauge is the pressure
adjuster knob. It allows for the reduction of
hydraulic pressure clamping force. The normal
pressure is set at 35kgs/cm2. This is good for
most solid firm materials. For softer, hollow, or
pipe materials using 20-25kgs/cm2 is good.
Different materials may require different clamping
force.
In auto mode, the vise pressure can be changed
by turning the pressure knob (Z), when it has
clamped the work piece.
-Unlock the fluted knob nut (Z1).
-Turn the fluted knob (Z) counterclockwise to
decrease the pressure, clockwise to increase the
vise pressure.
-Lock the fluted knob nut after adjusting.
V
Ball bearing
Ball bearing
Tungsten carbide guides
Z1
Z

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5 OPERATION PREPARATIONS
5.1 Setting the bow stroke limit
The numerical bow stroke height adjusting switch
is covered with waterproof cover, set the bow
height need to open the cover, after setting height
already, cover the cover to prevent the coolant
permeate into the switch to cause the switch
damaged.
This machine is equipped with a numeral switch Q
to set the saw bow an efficient return height. If
cutting lots of pieces, set the saw bow’s return
stroke height switch according to the work-piece’s
diameter will reduce the overall time of one
operation cycle.
5.2 Positioning the vise
When cutting angles, relocation of the vise,
uncover the retrieval cover and remove the
auxiliary vise device are necessary to prevent the
blade from cutting either the hydraulic vise or
mobile retrieving cover.
- Firstly uncover the retrieval cover by pull the
cover up and out as arrow direction by the
handle.
- Remove the auxiliary vise device by loosen
the wing nut and move the device up and take
it out from the table base.
- Move the vise to the right side for miter cutting
on the left side.
Adjusting the hydraulic vise for angle cutting
- Raise the bow to the setting height.
- Disconnect power.
- Remove the retrieval cover.
- Unlock the hydraulic vise lock lever.
- Push the hydraulic vise toward the retrieving
table.
- Visually check clearance of the blade and saw
bow against the hydraulic vise. Readjust the
position if necessary.
- Lock the hydraulic vise in to the position using
its lock handle.
5.3 Angle cutting
The machine can cut angles up to 60 in both
directions
- Check that the saw bow is raised to clear the
vise fixed vise jaw.
- Turn off power.
- Unlock the saw bow by using the lock lever
under the machine bench.
- Rotate the saw bow to the desired cutting angle.
Refer to the scale to determine the proper angle.
Lock lever
Vise lock lever
Waterproof cover
Retrieval cover
Auxiliary vise device
Wing nut

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- Lock the cutting angle in place by using the lock
lever.
- Next, adjust the location of the vise or fence to
avoid contact with the blade.
5.4 Adjusting the blade speed
*Blade speed must be changed while belt and
blade are moving.
- Check that the machine is running and blade is
moving.
- Rotate the speed change dial 3.10 and check
the speed indicator 3.9 for desired speed. Turn
the dial clockwise to raise blade speed, and turn
the dial counter clockwise to reduce blade
speed. The speeds available are 26-80MPM
(85-262FPM) (50Hz), 32-96MPM(105-315FPM)
(60Hz).
5.5 Changing the transmission belt
Over time and due to normal wear and tear the
pulley belt will need to be changed.
- Disconnect the machine from power supply.
- Open the belt cover. Remove 4 screws from the
top. Remove 1 screw from the front. Remove 8
screws from the cover.
- Turn the dial counter-clockwise to open the
pulley discs and loosen the belt.
- Replace the belt.
- Turn the dial to pretension the belt.
5.6 Selecting Automatic and Manual
operation
- To select manual mode, press operation mode
switch 3.1 D.
- Check the indicator light 3.1 D1 lightening.
- To select hydraulic operation, press operation
mode switch.
- Check the indicator light 3.1 D2 lightening.
5.7 Changing the blade
- Raise the saw bow approximately 6” in height.
- Disconnect the machine from the power source.
- Remove both blade guides from the blade guide
blocks and cover.
- Loosen the cover’s lock screws and open the
covers.
- Take off the chip brush device by loosen it’s
screws.
- Loosen left blade guide arm’s lock handles and
slides it to the right side as far as possible.
- Release blade tension by turning the blade
tensioning handle counter-clockwise until blade
is free.
- Remove the old blade from both wheels and out
of each blade guide.
Caution: Even dull blades are sharp to the skin!
Use extra caution handling band saw blades!
- Position the blade and making sure that the
teeth are pointed downward in the cutting
direction.
- Position the blade on the wheels. Make sure
back of the blade rests lightly against the wheel
flange of the both wheels. Twist blade slightly to
allow it to slip into guides.
- Tension the blade tension to the tension line as
indicator shown 331DSA by turning the handle
clockwise. Replace the chip brush device so
that it touches the blade and tighten setscrew.
- Close all covers and guards and fasten securely.
Connect machine to power and run the blade
freely for 1-2 minutes.
- Turn the power off and recheck the blade
tension and chip brush. If further adjustment is
necessary disconnect the saw from the power
source, make adjustments, and re-connect the
power.
5.8 Laser guide device (optional)
The laser guide has been set correctly before
shipment. The laser guide - line works when
machine power on, the red line will align and close
with the blade.
if any situations have to readjust Laser device, see
below pictures.
- A screw is for moving the device forward or
backward.
- B screw for moving the device downward or
upward.
WARNING
Disconnect the machine from the power source
before making any adjustments or repairs!
Failure to comply may result in serious injury!
!
!

14 CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
10
- Loosen C thumb knob for adjust the device
angle.
5.9 Install the vertical press on the vise jaws
for bundle cutting (optional)
- Standard press capacity is (W x H) 250~485 x
50~160 mm. Vise plates height 165 mm
- Special press capacity is (W x H) 250~485 x
200~300 mm. Vise plates height 300 mm
- Open the vise more than 250mm.
- Attach and Tighten posts bolts’ (A) on to vises.
Then attach the vertical press to the top of the
post bolts. Connect the Hydraulic connector (B).
- Attach the nuts (H) on to the posts, but do not
make the nut (H1) on moveable vise jaw too
tight. *Otherwise, the vise won’t be able to
clamp the work piece or the post bolts will be
damaged.
- Adjust the vise press (E) to sit approximately 5-
8mm above the work piece. Loose nut (C) and
rotate the bolt (D) to raise or lower the vise
press (E).
- Adjust the vise press width to fit the work piece
size. Loosen screws (F) on both sides of the
vise press then move press extender bars (G)
desired width.
- Turn OFF the hydraulic pump.
- Attach the hydraulic hose to connecter (B) and
then attach the quick link connecter (J) to the
90-degree fitting.
- Switch ON the hydraulic pump.
6 OPERATION CYCLE
6.1 Operation cycle
- Turn on the main connect switch A. on the door
of electrical box.
- Turn the key to automatic operation mode L1 to
unlock the machine. The indicator light B should
be lit.
- Start the hydraulic system, use switch C.
- Press the selector D to manual operation mode
D1, and its indicator light will be lit.
- Raise the saw bow, Use bow up switch E.
- Open the vise, use vise open switch F.
- Load the working material.
- Secure the material, use the vise close switch G.
- Base on the diameter of the material; set the
saw bow’s height Q.
- Choose the blade speed appropriate for the
material.
- Set the saw bow return height for cutting many
pieces.
- Select the operation cycle mode 6.1 D2 to press
the selector 6.1 D. The indicator light will be lit.
Laser guide device
C
A
B
H
D
CH1
AE
FG
B
J

15
CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED
11
- Restart the hydraulic system. Press the
hydraulic start switch 6.1 C. .
- Start operation by using the start switch 6.1 I.
- The digital display 6.1 P will present pieces cut.
- When the cutting operation is finished the saw
bow will automatically rise to the preset height
ready for the next operation.
6.2 Stopping or emergency stopping
There are two ways to stop the machine in an
event of an emergency or improper operation.
- For most situations, use the stop switch 6.1 J.
Using the stop switch 6.1 J will not reset the
controls and your operation setting. The blade
and drive motor will stop. Then the saw bow will
rise to the start position. Adjustments can be
made.
- Use the cycle start switch to continue the cutting
cycle.
- For unsafe and emergency conditions use the
emergency stop button 6.1 M. Using emergency
stop button 6.1 M will stop the machine in last
position. The motor and hydraulic will stop and
control setting will be reset.
- To restart, the emergency stop button 6.1 M
must be turned to release from the pressed
position. Then the operation cycle 6.1 must
restarted.
6.3 Automatic shutoff during machine
operation
If there are any improper operation or situation,
the machine is designed to automatically shut off
during the operation cycle to prevent any further
damage from occurring.
- If the hydraulic pump is on and the machine has
not been active for 5 minutes, the power will be
shut off.
- If the time take to clamp the vise is over 40 sec,
the power will shut off. The vise pressure warning
light will flash in warning.
- After cutting the saw bow has taken more than
40 sec to rise to the start position, the power will
shut off. The upper stroke-limit indicator light will
flash in warning.
- After pressing the start button, the vise clamps
the work piece, and saw bow begins cutting. If the
cutting time is unable to finish within 90 minutes,
the lower stroke limit indicator will flash in warning
and the power will be shut off.
If any of the above situations occurs, reset the
machine by pressing 6.1D. This will change the
operation mode – manual or automatic.
7 ROUTINE AND SPECIAL
MAINTENANCE
The maintenance jobs are listed below, divided
into daily, weekly, monthly and six-month intervals.
If the following operations are neglected, the result
will be premature wear of the machine and poor
performance.
7.1 Daily maintenance
- Give general cleaning to the machine to remove
accumulated shavings.
- Clean the lubricating coolant drain hole to avoid
excess fluid.
- Top off the level of lubricating coolant.
- Check blade for wear.
- Rise of saw frame to top position and partial
slackening of the blade to avoid useless yield
stress.
- Check functionality of the shields and
emergency stops.
7.2 Weekly maintenance
- Thoroughly clean the machine to remove
shavings, especially from the coolant tank.
- Removal of pump from its housing, cleaning of
the suction filter and suction zone.
- Clean the filter of the pump suction head and the
suction area.
- Use compressed air to clean the blade guides
(guide bearings and drain hole of the lubricating
cooling).
- Clean flywheel housings and blade sliding
surfaces on flywheels.
7.3 Monthly maintenance
- Check the tightening of the drive wheel screws.
- Check that the blade guide bearings on the
heads are perfect running condition.
- Check the tightening of the screws of the motor,
pump, and accident protection guarding.
7.4 Six-monthly maintenance
- Test the continuity of the equipment potential
protection circuit.
7.5 Oils for lubricating coolant
Considering the vast range of products on the
market, the user can choose the one most suited
to their own requirements, using as reference the
type SHELL LUTEM OIL ECO. THE MINIMUM
PERCENTAGE OF OIL DILUTED IN WATER IS 8
- 10 %.
7.6 Oil disposal
The disposal of these products is controlled by
strict regulations. Please see the Chapter on
"Machine dimensions Transport - Installation" in
the section on Dismantling.

16 CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
12
7.7 Special maintenance
Special maintenance must be conducted by skilled
personnel. We advise contacting your nearest
dealer and/or importer. Other protective and
safety equipment, devices (of the reducer), the
motor, the motor pump, and other electrical
components also require special maintenance.
7.8 Changing gear oil
The gear box requires periodic changing of oil.
The oil must be changed by the first 6 months of a
new machine and every year thereafter.
- Change the gearbox oil. (Gear oil # 90)
- Disconnect the machine from the power source.
- Raise the saw arm to vertical position
- Release the drain hold (R) to draw off gear oil by
- loosening the hex head screw (S).
- open fill hole (T) by releasing hex head screw (U)
- Replace the screw (S) after oil completely flows
off.
- Replace hole using the fill hole (T).
- Replace hex head screw (U)
8 TECHNICAL CHARACTERISTICS
8.1 Table of cutting capacity and technical
details
ROUTINE AND SPECIAL MAINTENANCE CHART
Item Part Lubricant Quantity Routine Remark
1 Bench vise Machine oil Suitable Everyday Oil after cleaning
2 Movable vise slides Machine oil Suitable Everyday Oil after cleaning
3 Lubricant fluid tank Water-soluble
cutting fluid
High level on
gauge Everyday
4 Worm gear Grease Suitable Every
month
5 Drive wheel oil hole Grease Suitable Two weeks
6 Idle wheel oil hole Grease Suitable Two weeks
7 Slide of slide seat Machine oil Suitable Two weeks
8 Transmission gear box Gear oil # 90 Middle level on
gauge Six months Every year after the first
9 Hydraulic system tank Hydraulic Oil AW-
32
High level on
gauge Six months Every year after the first
* Clean the chip from the flywheel housings and bench vise everyday to keep performance well.
Warning:
1. Disconnect the machine form the power source before any kind of maintenance.
2. Any special maintenance must contact skill personnel of dealer or importer. Do not remove parts for
maintenance.
T, U
R, S

17
CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED
13
8.2 NOISE TESTS
The test was held under environmental noise levels of 65db. Noise measurements with the machine
operating unload was 71db. Noise level during the cutting of mild carbon steel was 73db.
NOTE: with the machine operating, the noise level will vary according to the different materials being
processed. The user must therefore assess the intensity and if necessary provide the operators with the
necessary personal protection, as required by Law 277/1991.

18 CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
1 2 3 4 5 6 7 8
A
B C
D
8
7654321
D
C B
A
FU12
FU11
FU10
FU9
FU3 FU2 FU1 FU5
FU4
FU6
S1
FU7
0.5A
FU8
29
1.6A
V8
W4
V4
U4
E
1A
1A
1A
COOLANT
X10:4
Hydraulic
M4
E
380V-415V 16A 220V 25A
PCB3
X3:8
X3:9
X3:2
X3:10
X3:11
X3:3
X3:4
X3:1 X3:1
X3:4
X3:3
X3:11
X3:10
X3:2
X3:9
X3:8
X3:6
X3:7
X3:5
X2:4
X2:3
X2:2
X2:1
X2:1
X2:2
X2:3
X2:4
X3:5
X3:7
X3:6
Parts
Control Circuit Diagram
Motors & All Output
Drawn By: Sheet
PCB2
unclamp
12 11 12 11 2 1 96 95 96 95
X7:22
380-415V 1A 220V 2A
3.5mm Y/G
X9:8
0.5A
1.5A
0V 110V
X9:6 X9:4 X9:2
X1:8
X7:8
X7:10
X7:9
X7:7
X1:3
X7:3
X7:4
X1:10
M.C of M3
X1:5
X1:2
X7:18
X7:19
X7:20
X7:21
X7:2
X7:1
X10:18
X10:17 X10:16
X10:15
5.5A 1.5A
(MAIN CONTROL BOARD)
4A
400V,415V)
(220V,380V
0V
X1:9
A2 A1
A2 A1
T1 S1 R1
T S R
PE
L3 L2 L1
3.5mm BK
K2 K3
1/6HP
of
MOTOR
M3
SA1
Valve
of vice
of clamp
Valve
of UP
of DOWN
Valve
Valve
K1 K2
FS2
SB1
FS1
X1:7
X1:6
PCB2
PCB1
M.C of M1
M.C of M2
25V 23V 12V0V0v
2.0mm Y/G
0.75mm RED
E
SQ1 SQ5
1 1
P3
X10:4
X10:5
X10:6
X10:7
T1
X10:13
X10:12
X10:11
X10:14
E
M2
MOTOR
of
1HP
3HP
of SAW
MOTOR
M1
EX10:4
X10:1
X10:2
X10:3
K1 FS1 FS2
K3 A1
A2
0V
R1 T1
U1
V1
W2
W1
U2
V2
U3
V3
W3
12 3
9
4 5 7 8
19 20
14 15
9
16 917 31 35
12
13
10
11
X7:22
3.5mm BK
1.25mm BK
0.75mm RED
Revision
21
(TRANSFERENCE
FS1 FS2 SQ4
O.L of M2
O.L of M1
Limit of DOWNNER
SQ6
PRESS SENSOR
61 70 69 61 71 61 73 61 74
X1:16
X1:17
X1:18
X1:19
X1:13
X1:20
X7:16
X7:17
X7:13
X7:12
X2:1
X2:2
DETECTING
HEIGHT
OF VICE CLAMP
X6:10
X6:14
X6:11
X6:9
X6:8
X6:4
X6:11
X6:14
X6:10
X6:4
X6:8
X6:9
X1:14
X1:16
of SAW Broken
Limit SW
SQ1 61 67
BOARD
X6:1
X6:2X6:2
X6:1
X1:15
X1:19
of COVER Out
Limit SW
SQ5 61 68
X6:6
X6:6
X6:5
X6:5
82 81 83
COMINEXC
METER)
AC110VAC0V
(SPEED MEASURE
U1
X10:20
X10:19
38
37 24
T1
X1:16
X1:11
X1:12
X1:13
X1:14
X1:20 X1:19
M1-RLYV1 (WT-M1-005)
X1:1
X1:2
X1:3
X1:4
X1:5
X1:6
X1:7
X1:8
8586 87 88
80
WT-M3-TL VER2
WT-M1V3
PCB4
(ANGLE1V2)
BOARD)
1A
25
E
220V 16A 380V-415V 12A
UE331DSA: UE460DSA:
Unit
Layser
Laser
Unit
(Optional)
14

19
CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED
1 2 3 4
A
B C
D
41
D
2 3
Panel Board Wiring Diagram
C B
A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
X8
1
2
3
4
X6
1
2
3
4
X7
1
2
X1
1
2
3
X2
1
2
3
4
5
X3
1 2 3 4 5 6
X9
1
2
3
4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
1 2 3 4 5 6
8 7
PCB5
SA2
SWITCH)
(PANEL POWER ON
(STAR ON)
SB2
P1
PCB1
PCB4
(PANEL BOARD)
(COUNTER)
3 4
6155 5958
(MAIN CONTROL BOARD)
34X2X1
6154565761
12
65
(EMERGENCY STOP)
SB1
X10:15 X10:16 12
(HEIGHT
DETECTING BOARD)
X5
X7 X8
Revision
V4
2 3
P3
NO:WT/M1/C-02
Sheet of
Drawn By:
Panel Board wireingdiagram WE331DSA 460DSA-CIRCUIT
15

20 CHANGES AND TYPING ERRORS RESERVED
CHANGES AND TYPING ERRORS RESERVED CHANGES AND TYPING ERRORS RESERVED
1 2 3 4
A
B C
D
41
D
2 3
Saw Bow Stroke Wiring Diagram
C B
A
1
2 3 4 5 6
X9
1 2 3 4X3 1 2X2 1 2 3 4 5 6
X5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
X1
VR1
PCB4
PCB2
PCB5
SENSER)
(HEIGHT DETECTING
SETTING SWITCHHEIGHT
8421 8421 1248
73 61
X7:17 X7:16
(TRANSFERENCE BOARD) (PANEL BOARD)
(HEIGHT DETECTING BOARD)
1
2
3
(WT-M3-TL Ver2) (WT-M1-PA V3)
(ANGLE1V2)
Revision
V4
3 3 P3
NO:WT/M1/C-03
Sheet of
Drawn By:
Height DetectingBoard wireingdiagram
WE331DSA 460DSA-CIRCUIT
16