Hafco BS-13DS Guide

B030 30/7/09
HAFCO BS-13DS
BANDSAW
OPERATION
AND
PARTS MANUAL

METAL CUTTING BAND SAW MACHINE
MODEL: 330NAA
INSTRUCTION MANUAL
330NAA-090728-R1

WARNING
!!
Some dust created by power sanding, sawing,
grinding, drilling, and other construction activities
contains chemicals known to the State of California to
causecancer,birth defects or other reprodrctive harm.
Someexamples of these chemical are:
‧Lead from lead-based paints.
‧Crystalline silica from bricks, cement and other
masonry products.
‧Arsenic and chromium from chemically-treated
lumber.
Yourriskfrom these exposures varies, depending on
how often you do this type of work. To reduce your
exposure to these chemicals: Work in a well ventilated
area,andwordwith approved safety equipment, such
asthosedust masks that are specially designed to
filter out microscopic particles.

TableOfContents PageNo
1 Overall Aspect ………………………………………………………………… 2
2 Safety Rules For All Tools …………………………………………………… 3
3 Specification …………………………………………………………………… 5
4 Features ……………………………………………………………………..… 5
5 Transportation & Install ……………………………………………………… 6
6 Minimum Room Space For Machine Operation …………………………… 7
7 Make Proper Tooth Selection ……………………………………………….. 7
8 BI-Metal Speeds And Feeds ………………………………………………… 8
9 Use Of Main Machine Parts ………………………………………………… 10
10 Maintaining ………………………………………………………………….. 16
11.Trouble shooting ……………………………………………………………. 16
12 Circuit Diagram …………………………………………………………….. 19
13 Parts Lists …………………………………………………………………. 21
1

Overall Aspect
Change Speed Wheel
Body Frame
Angle SaleMove Vice Base
Cutting Chip
Motor Cover
Control Panel
2

WARNING: FAILURE TO FOLLOW THESE RULES
MAY RESULT IN SERIOUS PERSONAL INJURY
As with all machinery there are certain hazards involved with operation and use of the machine. Using the
machine with respect and caution will considerably lessen the possibility of personal injury. However, if
normal safety precautions are overlooked or ignored, personal injury to the operator may result.
This machine was designed for certain applications only. We strongly recommend that this machine NOT be
modified 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 contact with us and we have advised you.
Your machine might not come with a power socket or plug. Before using this
Machine, please do ask your local dealer to install the socket or plug on the
Power cable end.
2.SAFETY RULES FOR ALL TOOLS
A. USER:
(1). WEAR PROPER APPAREL. No loose clothing, gloves, rings, bracelets, or other jewelry to get caught
in moving parts.
Non-slip footwear is recommended. Wear protective hair covering to contain long hair.
(2). ALWAYS WEAR EYE PROTECTION. Refer to ANSLZ87.1 standard for appropriate
recommendations.
Also use face or dust mask if cutting operation is dusty.
(3). DON'T OVERREACH. Keep proper footing and balance at all times.
(4). NEVER STAND ON TOOL. Serious injury could occur if the tool is tipped or if the cutting tool is
accidentally contacted.
(5). NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER OFF. Don't leave tool until it
comes to a complete stop.
(6). DRUGS, ALCOHOL, MEDICATION. Do not operate tool while under the influence of drug, alcohol
or any medication.
(7). MAKE SURE TOOL IS DISCONNECTED FROM POWER SUPPLY. While motor is being
mounted, connected or reconnected.
(8). ALWAYS keep hands and fingers away from the blade.
(9). STOP the machine before removing chips.
(10). SHUT- OFF power and clean the BAND SAW and work area before leaving the machine.
(11).DO NOT Touch the cutting Blade while the machine is turm on.
B. USE OF MACHINE:
(1). REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to see that keys and
adjusting wrenches are removed from tool before turning it "on".
(2). DON'T FORCE TOOL. It will do the job better and be safer at the rate for which it was designed.
(3). USE RIGHT TOOL. Don't force tool or attachment to do a job for which it was not designed.
(4). SECURE WORK. Use clamps or a vise to hold work when practical. It's safer than using your hand
frees both hands to operate tool.
(5). MAINTAIN TOOLS IN TOP CONDITION. Keep tools sharp and clean for best and safest
performance. Follow instructions for lubricating and changing accessories.
(6). USE RECOMMENDED ACCESSORIES. Consult the owner's manual for recommended accessories.
The use of improper accessories may cause hazards.
(7). AVOID ACCIDENTAL STARTING. Make sure switch is in “OFF” position before plugging in power
cord.
3

(8). DIRECTIONOF FEED. Feed work into a blade or cutter against the direction of rotation of the blade or
cutter only.
(9). ADJUST AND POSITION the blade guide arm before starting the cut.
(10). KEEP BLADE GUIDE ARM TIGHT, A loose blade guide arm will affect sawing accuracy.
(11). MAKE SURE blade speed is set correctly for material being cut.
(12). CHECK for proper blade size and type.
(13). STOP the machine before putting material in the vise.
(14). ALWAYS have stock firmly clamped in vise before starting cut.
(15). GROUNDALL TOOLS. If tool is equipped with three-prong plug, it should be plugged into a
three-hole electrical receptacle. If an adapter is used to accommodate atwoprong receptacle, the adapter lug
must be attached to a known ground. Never removed the third prong.
C. ADJUSTMENT :
MAKE all adjustments with the power off. In order to obtain the machine. precision and correct ways of
adjustment while assembling, the user should read the detailed instruction in this manual.
D. WORKING ENVIRONMENT:
(1). KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.
(2). DON'T USE IN DANGEROUS ENVIRONMENT. Don't use power tools in damp or wet locations, or
expose them to rain. Keep work area well-lighted.
(3). KEEP CHILEREN AND VISITIORS AWAY. All children and visitors should be kept a safe distance
from work area.
(4). DON’T install & use this machine in explosive, dangerous environment.
E. MAINTENANCE:
(1). DISCONNECT machine from power source when making repairs.
(2). CHECK DAMAGED PARTS. Before further using of the tool, a guard or other part that is damaged
should be carefully checked to ensure that it will operate properly and perform its intended function. Check
for alignment of moving parts, binding of moving parts, breakage of parts, mounting, and any other
conditions that may affect its operation. A guard or other part that is damaged should be properly repaired or
replaced.
(3). DISCONNECT TOOLS before servicing and when changing accessories such as blades, bits, cutters,
etc.
(4). MAKE SURE that blade tension and blade tacking are properly adjusted.
(5). RE-CHECK blade tension after initial cut with a new blade.
(6). TO RPOLONG BLADE LIFE ALWAYS release blade tension at the end of each workday.
(7). CHECK COOLANT DAILY Low coolant level can cause foaming and high blade temperatures. Dirty
coolant can clog pump, cause crooked. Rust, low cutting rate and permanent blade failure. Dirty coolant can
cause the growth of bacteria with ensuing skin irritation.
(8). WHEN CUTTING MAGNESIUM NEVER use soluble oils or emulsions(oil-water mix) as water will
greatly intensify any accidental magnesium chip fire. See your industrial coolant supplier for specific coolant
recommendations when cutting magnesium.
(9). TO PRNMT corrosion of machined surfaces when a soluble on is used as coolant, pay particular
attention to wiping dry the surfaces where fluid accumulates and does not evaporate quickly, such as between
the machine bed and vise.
F. SPECTIFIED USAGE:
This machine is used only for general metals cutting within the range of cutting capacity.
4

G. NOISE:
A weighted sound pressure level : under80 dB.
H. SAFETY DEVICE:
Interlock switch on cutting area as soon as the cover of cutting area is open, machine will stop at once witch
the function of this switch. Do not remove this switch from machine for any reason, and check its function
frequently.
3.SPECIFICATION
MOTOR 2HP(KW1.5)
Mt/min 60HZ/29-115, 50HZ/24-95
Saw Blade Speed Variable Speed Ft/min 60HZ/95-380, 50HZ/79-316
Blade Size(mm) 27x0.9x3810
Dimension LxWxH (mm) 2030x1315x1425
N.W / G.W (kgs) 550 / 600
Measurement 2286x1600x1727
Packing
Sets per 20’ CTNR 6 sets
○(mm/inch) 330 / 13 “
0°□(mm/inch) 127x483 / 5“x18“
○(mm/inch) 305 / 12 “
+/- 45°□(mm/inch) 229x305 / 9“x12“
○(mm/inch) 204 / 8“
Cutting
Capacity
- 60°□(mm/inch) 178x204 / 7“x8“
4.FEARTURES:
1. This machine is useful for cutting normal steel, steel pipe, and provides cutting angle at + 60°and
-45°by the swivel head.
2. A tooth selection label Ms provided on the machine for cutting reference.
3. Variable speed control gives convenient selection of speeds.
4. Hydraulic cylinder controls feeding volume and provides stable cutting.
5. Easy sliding the working table back and forth by loosing and fixing only two bolts.
6. Quick positioning vise for clamping all sizes of work piece.
7. Chip pan underneath the working table prevents coolant fluid leaking and keep floor dry.
8. Hydraulic unit is to rise up the saw arm automatically for easy handling.
9.Coolant for cutting:water:oil=1:40 oil specification.
5

5.TRANSPORTATATION & INSTALLATION:
5-1.Unpacking
1. Transportation to desired location before unpacking, please use-lifting jack. (Fig. B)
2. Transportation after unpacking, please use heavy duty fiber belt to lift up the machine.
Fig. B
ALLWAYS KEEP PROPER FOOTING & BALANCE WHILE MOVING THIS MACHINE.
5-2.TRANSPORTATION OF MACHINE:
As this machine weights 550kgs(1210lbs) it is recommended that the machine be transported with help of
lifting jack.
Transportation Recommendation:
1. Tighten all locks before operation.
2. Always keep proper footing & balance while moving
this machine, and only use a heavy duty of fiber belt
to lift the machine as per Fig. 1.
3. TURN OFF the power before wiring & be sure
machine is properly grounded. Overload & circuit
breaker are recommended for safety wiring.
4. Tighten 4 bolts to base holes after machine is
balanced.
5. Check carefully if the saw blade is running in counter-
clockwise direction if not, reverse the wiring per
circuit diagram, Fig. 1
then repeat the running test.
6. Keep machine always out from sun, dust, wet, or raining area.
5-3.Installation:
(1) Always Keep proper footing & balance while moving this
470kgs machine. And only use heavy-duty fiber belt to lift the
machine as per Fig. (A).
(2) Hang the machine up, away from the floor, take away the 4
pads and assemble them on the auxiliary stand. Fix the machine
on the auxiliary stand and lock the connection nut.
(3) Finish removing this wooden case/crate from the machine.
Unbolt the machine from the crate bottom.
(4) Position & tighten 4 bolts into base holes properly after machine
in balance.
(5) Turn off the power before wiring & be sure machine is in proper
grounding. Overload & circuit breaker is recommended for B Fig.A
6

safety wiring.
(6) Keep machine always out from sun, dust, wet, raining area.
5-4.CLEAIG & LURICATING
(1) Your machine has been coated with a heavy grease to protect it in shipping. This coating should be
completely removed before operating the machine. Commercial degreaser, kerosene or similar solvent
may be used to remove the grease from the machine, but avoid getting solvent on belts or other rubber
parts.
(2) After cleaning, coat all bright work with a light lubricant. Lubricate all points in Fig 1. with a medium
consistency machine oil.
6.MINIMUM ROOM SPACE FOR MACHINE OPERATION
140”
80”
125”
7. MAKE PROPER TOOTH SELECTION
For maximum cutting efficiency and lowest
cost per cut, it is important to select the blade with
the right number of teeth per inch (TPI) for the
material being cut. The material size and shape
dictate tooth selection.
TOOTH
SELECTION
You need to consider:
The width of the cut - That is, the distance in the cut
that each tooth must travel from the point it enters the
work-piece until it leaves the work-piece, and
1.The shape of the work-piece.
 Squares, Rectangles, Flats (Symbol : ■)
Locate the width of cut on the chart. (Inches on the outer circle and millimeters on the inner circle.)
Select the tooth pitch on the ring marked with the square shape which aligns with the width of cut.
EXAMPLE: 6" (150mm) square, use a 2/3 Vari-Tooth.
 Round Solids (Symbol : ●)
Locate the diameter of your work-piece on the chart. Select the tooth pitch on the ring marked with
7

the round shape which aligns with the size of stock you are cutting.
EXAMPLE: 4" (100mm) round, use a 3/4 Vari-Tooth.
 Tubing, Pipe, Structural ( Symbol : O H ^ )
Determine the average width of cut by dividing the area of the work-piece by the distance the saw
blade must travel to finish the cut. Locate the average width of cut on the chart. Select the tooth
Ditch on the ring marked with the tubing and structural shape, which aligns with the average width
you are cutting.
EXAMPLE: 4"(100mm) outside diameter, 3"(75mm) inside diameter tubing.
4"(100mm) OD =12.5 sq.ln. (79cm2)
3"(75 mm ) ID = 7.0 sq.ln. (44cm2)
Area =5.5sq.ln.(35cm
2)
5.5 sq.ln. (35cm2) / 4" (100mm) distance =1.38(35mm) average width
1.38" (35mm), use a 4/6 Vari-Tooth
NOTE: The band speed and cutting rate recommendations presented on this chart are
approximations and are to be used as a starting point for most applications. For exact sawing
parameters' consult your saw blade supplier.
8. BI-METAL SPEEDS AND FEEDS
These figures are a guide to cutting 4"(100mm) material (with a 314 Vari-Tooth) when using a cutting fluid.
Increase Band Speed: 15% When cutting 1/4"(6.4mm) material (l0/l4 Vari-Tooth)
12% When cutting 3/4"(19 mm) material (6/10 Vari-Tooth)
10% When cutting 1-1/4"(32 mm) material(5/8 Vari-Tooth)
5% When cutting 2-1/2" (64 mm) material(4/6 Vari-Tooth)
Decrease Band Speed: 12% When cutting 8"(200mm) material(2/3 Vari-Tooth)
BAND SPEED
MATERIAL ALLOY
ASTM NO. FT./MIN M/MIN
173,932 314 96
330,365 284 87
623,624 264 81
230,260,272 244 74
280,264,632,655 244 74
101,102,110,122,172 234 71
1751,182,220,510 234 71
625,706,715,934 234 71
630 229 70
Coppe
r
Alloy
811 214 65
1117 339 103
1137 289 88
1141,1144 279 85
1141 HI STRESS 279 85
Carbon
Steel
1030 329 100
8

1008,1015,1020,1025 319 97
1035 309 94
1018,1021,1022 299 91
1026,1513 299 91
A36(SHAPES),1040 269 82
1042,1541 249 76
1044,1045 219 67
1060 199 61
Carbon
Steel
1095 184 56
8615,8620,8622 239 73
4340,E4340,8630 219 67
Ni-Cr-Mo
Alloy Steel
8640 199 61
E9310 174 53
A-6 199 61
A-2 179 55
A-10 159 49
D-2 90 27
Tool Steel
H-11,H-12,H-13 189 58
420 189 58
430 149 46
410,502 140 43
414 115 35
431 95 29
440C 80 24
304,324 120 36
304L 115 35
347 110 33
316,316L 100 30
Stainless
Steel
416 189 58
TELLTALE CHIPS
Chips are the best indicators of correct feed force. Monitor chip information
and adjust feed accordingly.
Thin or powdered chips – increase feed rate or reduce band speed.
Burned heavy chips – reduce feed rate and/or band speed.
Curly silvery and warm chips – optimum feed rate and band speed.
9

9.USE OF MAIN MACHINE PARTS
9-1.POWER SYSTEM AND CONTROL PANEL
The electrical rating of your band saw is either with 230 volt-single phase, or 400 volt-3 phase, magnetic
control.
If saw arm is in home position and the power is on, the saw arm will be risen up automatically by
Hydraulic Unit System when turn on the Hydraulic Unit System button.
The saw arm rising will be stopped when touching the Upper Limit Switch or pushing the Emergency
Switch button.
Before connecting your machine to an electrical power system, be sure the motor shaft is running in the
correct direction.
We recommend that 1.5mm² fused with a 10 amp, dual element, time lag fuse, to be used to supply power
to all machines regardless of their electrical rating.
Refer to the electrical wiring diagram supplied with your machine for instructions on how to connect saw
to power source. Power must be cut off when wheel cover is opened or during repairing.
Please check the moving direction of the blade. If the blade is moving in the wrong direction, please
re-connect the wire. G D I C E B
9-2.STARTING AND STOPPING MACHINE
1. Light (D) will be on when power is connected.
2. Push the button (N) for start Hydraulic system.
3. Push the button (C) for raising up the saw arm away from the saw
table. If saw arm can not be raised, please check if the power is
properly wired.
4. Start the motor by pushing the start button (A), Turn (G)
( 0-close,1-open) to open the coolant system when saw blade is
closing work piece. When the cut is completed, turn off the
coolant system (G)
4. Bottom (P) is for Hydraulic Vise Clamp. Push bottom( I )will clamp
N F A P H
the work object.
5. Bottom (H) is for Hydraulic Vise Release. Push bottom (H )will release the working object.
**For 330A machine with dc motor only **
The speed button needs to reset if the electric power ever shut off.
Before pushing start button, please turn the speed button back to “0” and then, reset the blade speed by
turning speed button.
5. Check if the upper limit switch is in proper position.
6. Push button (B) for controlling downwards of saw arm. And control the downward speed by adjusting
hydraulic volume valve.
7. When motor is running, push button (B), saw arm will automatically go down and start cutting the work
piece. When the cutting is finished, saw arm will rise up itself. The motor will stop when saw
arm touching the upper limit switch. Push button (F) to stop the machine, if needed.
8. When discontinued cutting or reset cutting is necessary during operation, close the cylinder feeding
valve, then push the stop button (F)
10

9. When discontinued cutting or reset cutting is
necessary during operation, close the cylinder
feeding valve, then push the stop button (F)
10. Press emergency button (E) to shut-off the motor when in
emergent situation. Before next operation, release (E) to get power.
Fig.3
11. An automatic shut-off limit switch is provided to stop the motor
when the cut is completed. The limit switch (K) is controlled by
button (L)(figure 3), which contacts the rear arm (M) for shutting off
the motor and coolant system.
M L K
9-3.ADJUSTING DOWNWARD TRAVEL OF SAW ARM
The downward travel of the saw arm should be adjusted so that when
the saw arm is in the extreme downward position, the teeth of the blade
will not touch the table surface. The stop screw (A) (Fig.4) is used to
adjust the distance between blade and table surface. After the distance
is adjusted, tighten lock nut.
A Fig.4
A Fig.5C Fig.6 B F A C BFig.7 A
9-4.CHANGING SPEEDS AND ADJUSTING BELT TENSION
If the belt (B) (Fig 6) is too loose, Loosen screw nut (A)(Fig5) adjust the
screw to proper tension and lock the screw nut.
The cutting speed is controlled by speed change C (Fig 6). Turn it clockwise
to decrease the cutting speed and increase the cutting speed by turning counter-clockwise.
Change speed always when motor is running, and be sure the belt cover is always in locked position.
**For 330D machine with dc motor only **
When motor is running, you can see the blade speed (D) on Operation Control Box. Just changing the
blade speed by turning Blade Speed Button (E).
11

9-5.ADJUSTING BLADE TENSION AND BLADE TRACKING
To tension the blade, turn the blade tension handle (A) (fig. 7) clockwise. A pointer and tension scale (B) is
located underneath the wheel. The scale is graduated to indicate blade tension of 20,000, 30.000 and 35,000
pounds per square inch (psi). For carbon blades, the blade should be tensioned at 20,000 psi. For bi-metal
blades (similar to the one supplied with the machine), the blade should be tensioned at 30,000 or 35,000 psi.
Always release blade tension at the end of each working day to prolong blade life. Make sure the blade is
tensioned correctly before checking or adjusting tracking. The blade is tracking properly when the back of the
blade is just lightly touching the wheel flanges of both wheels while the machine is running. If the blade is not
touching the wheel flanges, tighten or loosen screw C (fig. 7) until the blade tracks properly.
9-6.ADJUSTING CUTTING WIDTH
First loosen clamp knob (A) (fig. 8). Move the left blade guide bar to the suitable position.
Then tighten clamp knob (A).
A
Fig.8
G
9-7.ADJUSTING BLADE GUIDE ROLLER BEARINGS, CARBIDE BLADE GUIDES AND BACK-UP
BEARINGS AND CLEARING THE CUTTING CHIP
B
H
K
A
Fig.10 D
Before making the following adjustments, make sure the blade is
tracking and tensioned properly:
Fig.9
1.The back of the blade (A) (fig. 9) should F
ride against the back-up bearing (B).
To adjust, loosen set screw (C) and move E
the guide block (D) up or down, until it lightly
touches the back of the blade.
2.The saw blade (A) should also ride between and lightly
touch the two blade guide roller bearings (E) and (F) (fig. 9)
The front bearing (E) (fig. 9) is mounted C
on an eccentric, and can easily be adjusted
to suit blade thickness by loosening set
screw (G) and turning shaft (E).
3.The carbide blade guides (H) (fig 9)
should also be adjusted so they lightly touch the blade by
loosening screw (K).
4. The blade guide roller bearings, carbide guides and backup bearing
on holder (fig 9 and 10) should be adjusted in the same manner.
5. Cutting chips on the blade will be cleared by the steel brush.
9-8.CLEARING THE CUTTTNG CHIP
Please use steel brush to clear the chip on the blade teeth (fig 11)
Fig.11
12

9-9.BLADE AND COOLING SYSTEM
B Fig.16 D
Fig.13 A
B C Fig.14 K Fig.15 H
Fig.17 C
A Fig.12 A
The use of proper cutting fluid is essential to obtain maximum
efficiency from a band saw blade. The main cause of tooth failure
is excessive heat build-up. This is the reason that cutting fluid is
necessary for long blade life and high cutting rates. cutting area
and blade wheels should be kept clean at all time.
The rate of coolant flow is controlled by the stop valve lever (A)
(fig 12), which directs the coolant onto the blade. The lever (A)
is shown in the off position.
9-10.OPERATING AND ADJUSTING VISE
The work-piece is placed between the vise jaws with the amount to be
cut-off extending out past the blade. Your machine is equipped with a
"quick action" Vise jaw which allows you to instantly position the
moveable vise jaw (B) (fig, 14). Simply turn hand-wheel (A)
counterclockwise 1/2 turn and move the vise jaw( B) to the desired position.
Pull away the rack hook (C) to move the vise jaw (B). Then tighten the vise
jaw (B) against the work-piece by turning hand-wheel clockwise. When it is
not lockable the work piece by turning the hand wheel (A) in clockwise
direction, turn the hand wheel (A) in counter-clockwise direction then and
turn clockwise again the wheel to lock firmly the work piece.
If the same cutting length can be used
repeatedly on many work-pieces,
distance set rod can he used to set a
fix cutting length. Proceed as follows:
1.Pull the distance set rod (H) (fig
15) to a desired position. Loosen
the fix screw. (K)
2 Let the top of the work-piece
touch the distance set rod. Lock
firmly the fix screw.(K)
3 Tighten vise jaw the fix the
work-piece and get the same cutting length.
9-11.VARIABLE CUTTING ANGLE SELECTION
Please proceed as follows to obtain desired cutting angle. The
swivel range is from 60°clockwise to 45 °counter-clockwise.
Before swinging the base, make sure there is nothing in the way, or
any interference.
1. Pull out the bar (B) (fig. 16) swing and hold the bar.
2. Push to turn the swivel base to desired angle. Refer to scale
on (D) for degree.
3. then start the cutting.
The swivel range is from 60°clockwise to 45°
counter-clockwise.
13

For front or rear cutting, move the sliding vise table by direct pushing. Be sure to put your hand ahead
of (C) to prevent the contact with the pumper.
Fig.18 C B A
Fig 18 is the Hydraulic Vise set. The hydraulic (B)
movement is: turning the handle(A) and make the vise(C) to
clamp working object, and push the bottom of Hydraulic
Vise Clamp. The hydraulic device will move the vise and
press the working object, make the working object being
clamped tied. The object will not be moving during the
cutting and cause any danger. After cutting completed, push
the release bottom and take the object from the working
table
9-12.REMOVING AND INSTALLING THE
BLADE
When it is necessary to replace the blade, proceed
as follows:
B E D Fig.19 C A
D Fig.21 E G
F Fig.20
1. Raise the saw frame about 6" and close the feed
on/off knob by turning it clockwise as far as it
will go (fig 19).
2. Move the blade guide arm to the right.
3. Disconnect the machine from the power source.
Loosen cover screw, remove cover (A), open the
cover (B), remove cover (C) and (D), then clean
the chips and dirt inside the machine.
3. Release blade tension (F) (fig 20) by turning the
blade tension hand-wheel counterclockwise.
5. Remove the blade from both wheels and out of each
blade guide. But remove side (B) saw blade. When
totally released, then remove the side (A).
6. Make sure the teeth of the new blade are pointing in the
right direction. IF necessary, turn the blade inside out.
7. Place the new blade on the wheels. In the blade guides
and adjust blade tension and blade guides.
9-13.HYDRAULIC SYSTEM (OPTIONAL FOR 1PH)
A). The hydraulic system on this machine consists of a
hydraulic cylinder, which is operated by a needle valve. The
saw frame is to be automatically raised up by the hydraulic movement, and as
this is done, oil passes to the underside of the piston. The restricted flow is
regulated by the feed rate control knob and governs the speed the saw frame
lowers If turn the valve (D) (fig 21) clockwise, the descending speed of the
saw frame will decrease If turn the valve counterclockwise, the descending
speed of the saw frame will increase. Bottom (E) is for Hydraulic Vise Clamp.
Push bottom (E) will clamp
the work object. Bottom (G) is for Hydraulic Vise Release. Push bottom
(G )will release the working object.
9-14.GEAR BOX
14

The gearbox should be drained and refilled after the first 50 hours of
use and thereafter every 5 months, with Mobil Synthetic Gear Oil,
SHC-636, ISO Viscosity Grade 680. This oil meets or exceeds
American Gear Manufacturers Association (AG.M.A.) #8
compounded Cylinder Oil specifications. This oil is available
through Grainger's in 1 quart bottles as number SW061.
Fig.22 A
Fig.24 C A
To change the gear oil, proceed as follows:
1. Run the machine for 10 minutes to warm up the gearbox.
2. Disconnect the machine from the power source.
3. Raise the saw arm to its maximum position and close the feed
rate control knob.
4. Drain the gearbox by removing the screw away from the oil-out
hole (A) (fig. 22).
5. Replace a screw and lower the saw arm to its lowest position.
6. Open the oil-in hole and fill the gearbox with oil
7. Close the oil-in hole.
9-15.PIVOT
Occasionally lubricate the pivot using waterproof grease at the fitting
( C) (fig 23)
Fig.23 C
9-16. HOW TO OPERATE HYDRAULIC UNIT (FOR 330A)
1.This hydraulic unit is using (Esso,H15) oil. Change first oil
after 50 hours use. Then change oil every 6 months after.
Run the hydraulic unit for at least 10 minutes before
changing oil, this will let the oil flow smoother and easier
to change.
2.Open the oil outpour door with tool when changing the oil.
Let the used oil out completely. Close the outpour door
firmly, open the input door (A) and pour in the oil by 3 liter
(will be 80%full).
3. If in long time use, please watch out the oil temperature to
be 60º C maximum.
9-17. HOW TO USING CLEAN EQUIPMENT
After finished cutting, you can clean the chip by using clean
equipment.
Adjust the screw (A) (on the end of spray) to control the volume
of coolant fluid.
NOTICE : Please using the suitable volume of coolant fluid
for cleaning.
Cleaning the floor immediately when the coolant
fluid leaking on the floor.
Fig. 25 A
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Always keep the floor dry to prevent slip or any accident.
10.MAINTAINING
That's easier to keep machine in good condition or best performance by means of maintaining it at any time
than remedy it after it is out of order.
(1) Daily Maintenance (by operator)
(a) Fill the lubricant before starting machine everyday.
(b) If the temperature of spindle caused over-heating or strange noise, stop machine immediately to cheek
it for keeping accurate performance.
(c) Keep work area clean; release vise, cutter, work-piece from table; switch off power source; take chip
or dust away from machine and follow instructions lubrication or coating rust proof oil before leaving.
(2) Weekly Maintenance
(a) Clean and coat the cross leading screw with oil.
(b) Check to see if sliding surface and turning parts lack of lubricant. If tile lubricant is insufficient, fill it.
(3) Monthly Maintenance
(a) Check if the fixed portion has been loose.
(b) Lubricate bearing worm, and worm shaft to avoid the wearing.
(4) Yearly Maintenance
(a) Adjust table to horizontal position for maintenance of accuracy.
(b) Check electric cord, plugs, switch, at least once a year to avoid loosening or wearing.
11. TROUBLE SHOOTING
Symptom Possible Cause(s) Corrective Action
Machine can not be started 1.Power is not plugged; the power light on
control panel is not on.
2.Motor can not be started; power was cut
by limit switch.
3. Operation button can not be normally
operated.
1. Check the motor specification;
connect the power with correct
power supply. Make sure the power
light in on.
2. Make sure the cover is in correct
position.
3.Push the emergency button; return it
to original position. Then release
the emergency button.
Excessive Blade
Breakage 1. Materials loosen in vise.
2. Incorrect speed or feed
3.Blade teeth spacing too large
4. Material too coarse
6. Incorrect blade tension
7.Teeth in contact with material before saw
is started
8. Blade rubs on wheel flange
9. Miss-aligned guide bearings
10. Blade too thick
11.Cracking at weld
1. Clamp work securely
2. Adjust speed or feed
3. Replace with a small teeth spacing
blade
4. Use a blade of slow speed and
small teeth spacing
5. Adjust to where blade just
does not slip on wheel
6. Place blade in contact with
work after motor is starred
7. Adjust wheel alignment
8. Adjust guide bearings
9. Use thinner blade
10. Weld again, beware the welding
skill.
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Premature Blade Dulling 1. Teeth too coarse
2. Too much speed
3. Inadequate feed pressure
4.Hard spots or scale on material
5. Work hardening of material.
6.Blade twist
7. Insufficient blade
8. Blade slide
1. Use finer teeth
2. Decrease speed
3. Decrease spring tension on side of
saw
4. Reduce speed, increase feed
pressure
5. Increase feed pressure by reducing
spring tension
6. Replace with a new blade, and
adjust blade tension
7. Tighten blade tension adjustable
knob
8. Tighten blade tension
Unusual Wear on
Side/Back of Blade 1.Blade guides worn.
2.Blade guide bearings not adjust properly
3.Blade guide bearing bracket is loose
1.Replace.
2.Adjust as per operators manual
3.Tighten.
Teeth Ripping from
Blade. 1. Tooth too coarse for work
2. Too heavy pressure; too slow speed.
3. Vibrating work-piece.
4. Gullets loading
1. Use finer tooth blade.
2. Decrease pressure, increase speed
3. Clamp work piece securely
4. Use coarser tooth blade or brush to
remove chips.
Motor running too hot 1. Blade tension too high.
2. Drive belt tension too high.
3. Blade is too coarse for work
4. Blade is too fine for work
5. Gears aligned improperly
6. Gears need lubrication
7. Cut is binding blade
1. Reduce tension on blade.
2. Reduce tension on drive belt.
3. Use finer blade.
4. Use coarse blade.
5. Adjust gears so that worm is in
center of gear.
6. Check oil path.
7. Decrease reed anti speed
Bad Cuts (Crooked) 1. Feed pressure too great.
2. Guide bearings not adjusted properly
3. Inadequate blade tension.
4. Dull blade.
5. Speed incorrect.
6. Blade guides spaced out too much
7. Blade guide assembly loose
8. Blade truck too far away from wheel
flanges
1. Reduce pressure by increasing
spring tension on side of saw
2. Adjust guide bearing, the clearance
can not greater than 0.001.
3. Increase blade tension by adjust
blade tension
4. Replace blade
5. Adjust speed
6. Adjust guide space.
7. Tighten
8. Re-track blade according to
operating instructions.
Bad Cuts (Rough)
1. Too much speed or feed 2. Blade is too coarse
3. Blade tension loose
1. Decrease speed or feed.
2. Replace with finer blade.
3. Adjust blade tension.
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