Magnum Industrial MI-91703 User manual

MODEL NO.: MI-91703 / MI-91700
OPERATING MANUAL

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SAFETY RULES
WARNING: FAILURE TO FOLLOW THESE RULES MAY RESULT IN
SERIOUS PERSONAL INJURY.
1. FOR YOUR OWN SAFETY, READ INSTRUCTION MANUAL BEFORE
OPERATING THE TOOL. Learn the tool’s application and limitations as well
as the specific hazards peculiar to it.
2. KEEP GUARDS IN PLACE and in working order.
3. ALWAYS WEAR EYE PROTECTION. Wear safety glasses. Everyday
eyeglasses only have impact resistant lenses; they are not safety glasses.
Also use face or dust mask if cutting operation is dusty. These safety glasses
must conform to ANSI Z87.1 requirements.
Note: Approved glasses have Z87 printed or stamped on them.
4. REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking to
see that keys and adjusting wrenches are removed from tool before turning it
on.
5. KEEP WORK AREA CLEAN. Cluttered areas and benches invite accidents.
6. 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.
7. KEEP CHILDERN AWAY. All visitors should be kept safe distance from work
area.
8. MAKE WORKSHOP KID PROOF with padlocks, master switches, or by
removing starter keys.
9. DON’T FORCE TOOL it will do the job better and safer at the rate for which it
was not designed.
10.USE RIGHT TOOL. Don’t force tool or attachment to do a job for which it
was not designed.

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11.USE PROPER EXTENSION CORD. Make sure your extension cord is in
good condition. When using an extension cord, be sure to use one heavy
enough to carry the current your product will draw. An undersized cord will
cause a drop in line voltage resulting in loss of power and overheating. Table
1 shows the correct size to use depending on cord length and nameplate
ampere rating. If in doubt, use the next heavier gage. The smaller the gage
number, the heavier the cord.
12.WEAR PROPER APPAREL Do not wear loose clothing, gloves, neckties,
rings, bracelets, or other jewelry which may get caught in moving parts.
Nonslip footwear is recommended. Wear protective hair covering to contain
long hair.
13.ALWAYS USE SAFETY GLASSES. Also use face or dust mask if cutting
operation is dusty. Everyday eyeglasses only have impact resistant lenses,
they are NOT safety glasses.
14.SECURE WORK. Use clamps or a vise to hold work when practical. It’s safer
than using your hand and it frees both hands to operate tool.
15.DON’T OVERREACH. Keep proper footing and balance at all times.
16.MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for best and
safest performance. Follow instructions for lubricating and changing
accessories.
17.DISCONNECT TOOLS before servicing; when changing accessories, such
as blades, bits, cutters, and the like.
18.REDUCE THE RISK OF UNINTENTIONAL STARTING. Make sure switch is
in off position before plugging in.
19.USE RECONNENDED ACCESSORIES. Consult the owner’s manual for
recommended accessories. The use of improper accessories may cause risk
of injury or persons.
20.NEVER STAND ON TOOL Serious injury could occur if the tool is tipped or if
the cutting tool is unintentionally contacted.

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21.CHECK DAMAGED PARTS. Before further use of the tool, a guard or other
part that is damaged should be carefully checked to determine 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.
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. TURN POWER OFF.
Don’t leave tool until it comes to a complete stop.
24.MAME SURE TOOL IS DISCONNECTED from power supply while motor is
being mounted, connected or reconnected.

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SAVE THESE INSTRUCTIONS
ADDITIONAL SAFETY RULES FOR BAND SAWS
1. If you are not thoroughly familiar with the operation of band saws, obtain
advice from your supervisor, instructor or other qualified person.
2. Follow all wiring codes and recommended electrical connections. Make
certain that the tool is properly grounded.
3. Make all adjustments with the power “OFF”
4. Always maintain proper adjustment of blade tension, blade guides, and blade
support bearings.
5. Avoid awkward hand positions. A sudden slip could allow the hand to contact
the blade.
6. Do not attempt to saw stock that does not have a flat surface, unless a
suitable support is used.
7. Make sure blade is not contacting the workpiece before turning on the power
switch.
8. Always keep hands and fingers away from the blade when the machine is
running.
9. Hold workpiece firmly against table and feed into blade at a moderate speed.
10. Made sure that the saw blade teeth point downward toward the table.
11. Adjust upper guide to just clear work piece.
12. Disconnect machine from the power source when making repairs.
13. Replace all guards after servicing.
14. Turn off band saw if the material is to be backed out of an uncompleted cut.

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15. Make relief cuts before cutting long curves.
16. Do not cut material that is too small to be safely supported.
17. Support long heavy work from the floor.
18. Before leaving the machine, make sure the work area is clean.
19. Important: When the tool is not in use , the switch should be in the “OFF”
position and the power cord disconnected.
20. Do not remove jammed cutoff pieces until blade has stopped.
ON-OFF SWITCH PADLOCK –To safeguard the band saw from unauthorized
operation and to avoid accidental starting by children or other not qualified to use,
the use of padlock is required. To lock out the on –off switch, open the padlock,
insert through the hole of the switch on button and close the padlock. Place the
key in a location that is inaccessible to children and other not qualified to use the
tool.
SWITCH WITH KEY –The switch key must be inserted into the switch before
saw can operate. To lock the switch in the OFF position, remove the switch key
from the switch. Place the key in a location that is inaccessible to children and
others not qualified to use the tool.

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GROUNDING INSTRUCTIONS
1. All grounded, cord-connected tools:
In the event of a malfunction or breakdown, grounding provides a path of
least resistance for electric current to reduce the risk of electric shock. This
tool is equipped with an electric cord having an equipment-grounding
conductor and a grounding plug.
The plug must be plugged into a matching outlet that is properly installed and
grounded in accordance with all local codes and ordinances.
Do not modify the plug provided –if it will not fit the outlet, have the proper
outlet installed by a qualified electrician.
Improper connection of the equipment-grounding conductor can result In a
risk of electric shock. The conductor with insulation having an outer surface
that is green with or without yellow stripes is the equipment-grounding
conductor. If repair or replacement of the electric cord or plug is necessary, do
not connect the equipment-grounding conductor to a live terminal.
Check with a qualified electrician or service personnel if the grounding
instructions are not completely understood, or if in doubt as to whether the
tool is properly grounded.
Use only 3-wire extension cords that have 3-prong grounding plugs and
3-pole receptacles that accept the tool’s plug.
Repair or replace damaged or worn cord immediately.
2. Grounded, cord-connected tools intended for use on a supply circuit having a
nominal rating less than 150 volts:
This tool is intended for use on a circuit that has an outlet that looks like the
one illustrated in Sketch A in Figure 1. The tool has a grounding plug that
looks like the plug illustrated in Sketch A in Figure 1. A temporary adapter,
which looks like the adapter illustrated in Sketches B and C, may be used to
connect this plug to a 2-pole receptacle as shown in Sketch B if a properly
grounded outlet is not available. The temporary adapter should be used only

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until a properly grounded outlet can be installed by a qualified electrician. The
green-colored rigid ear, lug, and the like, extending from the adapter must be
connected to a permanent ground such as a properly grounded outlet box.
3. Grounded, cord-connected tools intended for use on a supply circuit having a
nominal rating between 150-250 volts, inclusive:
This tool is intended for use on a circuit that has an outlet that looks like the
one illustrated in Sketch D in Figure 1. The tool has a grounding plug that
looks like the plug illustrated in Sketch D in Figure 1. Make sure the tool is
connected to an outlet having the same configuration as the plug. No adapter
is available or should be used with this tool. If the tool must be reconnected
for use on a different type of electric circuit, the reconnection should be made
by qualified service personnel; and after reconnection, the tool should comply
with all local codes and ordinances.
Note : In Canada, the use of a temporary adaptor is not
permitted by t
he Canadian Electrical Code.
GROUNDING
PIN
COVER OF GROUNDED
OUTLET BOX
METAL SCREW
(A)
(B)
FIGURE 1
Grounding methods

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Table1
Minimum gage for cord
Ampere Rating
Volta
Total length of cord in feet
120V
240V
25ft. 50ft. 100ft. 150ft.
50ft. 100ft. 200ft. 300ft.
Not
More More
Than Than
AWG
0 6
610
10 12
12 16
18 16 16 14
18 16 14 12
16 16 14 12
14 12 Not Recommended
BEBQUFS
GROUNDING
MEANS
(C)
GROUNDING
PIN
(D)

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WARNING PLATES
This machine has warning symbols attached on it as shown below to ensure
proper and safe operation.
These symbols are used on the machine to indicate points or instances of
specific danger to operating personnel.
Make sure to memorize these symbols and bring them to the attention of others
as and when necessary. Do not remove safety symbols from the machine.

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A. Bandsaw Machine
B.
Door Knob
C.
Guide Post Handwheel
D.
Blade Guide Support
E.
Blade
F.
Fence
G.
Working Table
H.
Brake Foot
I.
Blade Tension Handle Wheel
J.
Switch

FEATURES
 Motor: 3HP,220V,1PH,60HZ
 Amps: 16
 RPM: 1725
 Table size: 20”*24”
 Table tilt: 0~45
 Wheel Size: 18”
 Max Blade width: 1 1/4”
 Min Blade width: 1/4”
 Floor to table height: 37”
 Cutting capacity/throat: 17 1/2”
 Maximum width of cut:17 1/2”
 Maximum depth of cut: 16”
 Dust collection ports: 4”*2PCS
 Base dimensions:98CM*50CM
 Blade length: 3700mm
 Blade speed: 600/840RPM
 Bearings: sealed and permanently lubricated
 Overall size:42”*61”*86”
 Approximate shipping weight: 275KGS
All specifications, dimensions and design characteristics shown in this
manual are subject to change without notice.
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INSTALLAITON
SAFETY RULES FOR MACHINE LIFTING
1. Pay special attention to the balance of the machine while lifting.
2. Use a forklift with sufficient loading capacity to lift the machine.
3. Have another person help guide the way when lifting the machine.
4. The forks of forklift must protrude from under the machine underside.
5. The forklift must only be driven by an experienced forklift driver.
This is a heavy machine. Serious personal injury may occur if safe moving ethods are not used. To be
safe, get assistance and use power equipment to move the shipping crate and remove the machine from
the crate.
Although not required, we recommend that you mount your new machine to the floor.
Because this is an optional step and floor materials may vary, floor mounting hardware is not
included. Generally, you can either bolt your machine to the floor or mount it on machine
mounts. Both options are described below. Whichever option you choose, it is necessary to
level your machine with a precision level.
SELECTION OF LOCATION
Requirement of operating environment the operating temperature for this machine should be
between +5ɗand!+40ɗ-while the relative humidity should not exceed 50% at a maximum
temperature of +40ɗ.
Improper environment will affect the machine’s safe operation, avoid the following working
area:
Avoid placing in area where the machine will rock or be uneven, thus preventing the machine
from falling or turning over. This will prevent injuries and undue wear on the machine.
Avoid placing in places where vibration may occur. Install the machine at the anticipated
place.
Whether there is any dust on the sliding surface or any defect. Clean it first to avoid setting off
sparks or causing an electrical shock.
Space allocation
Consider the largest size of workpiece that will be processed through this machine and
provide enough space around the machine for adequate operator material handing or the
installation of auxiliary equipment. With permanent installations, leave enough space around

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the machine to open or remove doors/covers as required by the maintenance and service
described in this manual.
Electrical Installation
Place this machine near an existing power source. Make sure all power cords are protected
from traffic, material handling, moisture, chemicals, or other hazards. Make sure to leave
assess to a means of disconnection the power source or engaging a lockout/tagout device.
Lighting
Lighting around the machine must be adequate enough that operations can be performed
safely. Shadows, glare, or strobe effects that may distract or impede the operator must be
eliminated.
TRANSPORTATION
Carefully check over the machine whether it is damaged during transportation.
While moving the machine, be sure to note its weight distribution as well as its balance.
If the machine is damaged while being moved, please contact the manufacturer immediately.
The lifting of the machine is as easy as follows:
The machine can be lifted by a forklift.
Their forks should insert through the machine bottom.
Attention should be paid to the balance of the machine while lifting.

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P
POWER SUPPLY REQUIREMENT
Insufficient voltage from factory power source may affect the power output of the motor and
the function of the controller.
It is important to connect this machine to the correct voltage in the factory power source.
Use only an independent power source.
3.7 CONNECT POWER SOURCE WIRES
1. Before connecting the power wires make sure the voltage between the machine and your
factory power source is the same.
2. Take out the electrical cover at the electrical control box outside.
3. Connect the power wires to the plug.
4. The machine must be properly grounded to prevent possible injury from electrical shock.
5. Connect the power wires from machine bed to the electrical control box according
connecter type.
6. Qualified electrical personnel should perform all electrical connections.
Grounding should be based on the local regulations.

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FIGURE 2
BLADE GUIDES
The blade guides provide side-to-side support to help keep the blade straight while cutting.
The blade guides are designed to be adjusted in two ways—forward/backward and
side-to-side.
To adjust the upper and lower blade guides:
DISCONNECT BANDSAW FROM POWER!
1. Make sure the blade is tracking properly
and that it is correctly tensioned.
2. Loosen the cap screw(A) on the lateral
adjustment rod and adjust the blade
guides until the edges of the bearings are
1/16" behind the blade gullets, as
illustrated in Figure 2.
Note: The 1/16" spacing is ideal, although
with larger blades it may not be possible. In
such cases, adjust the guide bearings as far
forward as possible to the blade gullets, and
still maintain the proper support bearing
spacing
ġ adjustment.
Note: Make sure that the blade teeth will
not contact the guide bearings when the
blade is against the rear support bearing
during the cut or the blade teeth will be
ruined.
3. Tighten the cap screw on the lateral
adjustment rod.
A
(UPPER)
A
(LOWER)

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A
4. Loosen the blade holder lock cap screws.
5. Set the bearings and bakelitesġ0.004" away
from the blade.
Note: 0.004" is approximately the thickness
of a paper.
6. Tighten the cap screw to lock the blade
guide in position.
7. Repeat this procedure for the lower guides.
(All though the lower guides are set up a little
differently, the concept is the same.)
8. Loosen the support bearing
thumbscrew.(A)
9. Place a 0.016" feeler gauge between the
support bearing and the blade, and position
the bearing 0.016" away from the back of the
blade. (B)
Note: Whenever changing a blade or
adjusting tension and tracking, the upper and lower blade support
bearings and guide bearings must
be properly adjusted before cutting
operations.
A
B

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TO ADJUST GUIDE POST:
1. Make sure that the blade tension, blade
tracking, support bearing, and blade guides
are adjusted correctly.
2. Loosen the guide post lock knob shown.
3. Turn the guide post handwheel to raise or
lower the guide post until the upper blade
guide assembly is within 1⁄4" from the top of
the workpiece.
4. Lock the guide post in place with the lock
knob.
BLADE TENSION
Bandsaw blades stretch when tensioned and during operation. Eventually, an over- stretched
blade will break. To minimize over-stretching, blade tension should always be removed after
using the bandsaw.
TO TILT THE TABLE:
1. DISCONNECT BANDSAW FROM
POWER!
2. Loosen the lock handle and lock knob on
the table trunnion shown in Figure.
Guide Post
Handwheel
Guide Post
Guide Post
Lock Knob
Lock Handle
Lock Knob

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T
Troubleshooting
! WARNING
Disconnect the machine from power source before proceeding with any troubleshooting! Failure to
comply may cause serious injury!
Description of Symptoms
Possible Cause
Corrective Action
Machine will not start
1. Fuse blown or circuit
breaker tripped
2. Cord Damaged
3. Faulty switch
4. Not connected to power
source
5. Connected to wrong
voltage
6. Emergency stop button
pressed
1. Replace fuse or reset
circuit breaker
2. Have cord replaced
3. Replace switch
4. Check connection
5. Check voltage
6. Rotate emergency stop
button clockwise until it
pops out
Blade does not come up to
speed
1. Cable too light or too long
2. Low current
3. Circuit shared with other
equipment
4. Motor not wired for
correct voltage
1. Replace with adequate
size cab
le
2. Contact local electric
company
3. Provide a dedicated
circuit
4. Refer to motor nameplate
for correct voltage
Motor overheats
1. Motor overloaded
2. Air circulation through the
motor restricted
1. Reduce load on motor
2. Clean out fan and fan
cover
Machine slows when
operating
1. Feeding workpiece too
fast
1. Slow the feed speed
Does not make accurate
45° or 90° cuts
1. Stops not adjusted
correctly
2. Angle pointer not set
accurately
3. Miter gauge out of
adjustment
1. Check blade with
combination square and
adjust stops
2. Check blade with
combination square and
adjust pointer
3. Adjust miter gauge
Saw makes unsatisfactory
cuts
1. Dull blade
2. Blade mounted
backwards
3. Gum or pitch on blade
4. Incorrect blade for cut
1. Sharpen or replace blade
2. Turn blade around
3. Remove blade and clean
4. Change blade to correct
type
Saw vibrates excessively
1. Stand on uneven floor
2. Damaged saw blade
3. Bad V
-belt
4. V
-
belt tension incorrect
5. Loose hardware
1. Reposition on flat, level
surface
2. Replace saw blade
3. Replace V
-belt
4. Check and adjust v
-
belt
tension
5. Tighten hardware

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