General 90-725 Manual

General 90-725 Manual

Industrial metal cutting band saw with mobile base and coolant pump

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To help ensure safe operation, please take a moment to learn the machine's applications and limitations,
as well as potential hazards. General
harmless for any injury that may result from the improper use of it's equipment.
1. Do not operate the bandsaw when tired, distracted
or under the effects of drugs, alcohol or any medI-
cation that impairs reflexes or alertness.
2. The work area should be well lit, clean and free
of debris.
3. Keep children and visitors at a safe distance when
the bandsaw is in operation; do not permit them to
operate the bandsaw.
4. Childproof and tamper proof your shop and all ma-
chinery with locks, master electrical switches and
switch keys, to prevent unauthorized or unsupervised
use.
5. STAY ALERT! Give your work your undivided attention.
Even a momentary distraction can lead to serious
injury.
6. Fine particulate dust is a carcinogen that can be
hazardous to health. Work in a well-ventilated area.
Wear face, eye, ear, respiratory and body protec-
tion devices.
7. Do not wear loose clothing, gloves, bracelets,
necklaces or other jewelry while the bandsaw is in
operation.
8. Be sure that adjusting wrenches, tools, drinks and
other clutter are removed from the machine and/or
the table surface before operating.
9. Keep hands well away from the blade and all
moving parts. Use a brush, not hands, to clear away
chips and dust.
10. Adjust and position the blade guides before starting
to cut.
11. Adjust blade tension and tracking before starting to
cut.
12. Blade teeth must point down toward the table.
13. Be sure that the blade has gained full operating
speed before starting to cut.
14. Always use a clean, properly sharpened blade.
Dirty or dull blades are unsafe and can lead to
accidents.
RULES FOR SAFE OPERATION
®
International disclaims any real or implied warranty and holds itself
15. Use suitable workpiece support if the workpiece
does not have a flat surface.
16. Make sure the workpiece is securely held in place
in the vise.
17. Do not work on long stock without adequate sup-
port on the out feed end of the table.
18. Do not push or force stock into the blade. The band-
saw will perform better and more safely when work-
ing at the rate for which it was designed.
19. Avoid working from awkward or off balance posi-
tions. Do not overreach and keep both feet on floor.
20. Keep guards in place and in working order. If a
guard must be removed for maintenance or clean-
ing be sure it is properly re-attached before using
the saw again.
21. Never leave the machine unattended while it is run--
ning or with the power on.
22. Use of parts and accessories NOT recommended
by General
®
International may result in equipment
malfunction or risk of injury.
23. Never stand on machinery. Serious injury could re-
sult if the tool is tipped over or if the cutting tool is
unintentionally contacted.
24. Always disconnect the saw from the power
source before servicing or changing accessories
such as blades, or before performing any mainte-
nance or cleaning, or if the machine will be left
unattended.
25. Make sure that the switch is in the "OFF" position
before plugging in the power cord.
26. Make sure the machine is properly grounded. If
equipped with a 3-prong plug it should be used with
a three-pole receptacle. Never remove the third
prong.
27. Do not use this bandsaw for other than its intended
use. If used for other purposes,General® International
disclaims any real or implied warranty and holds it
self harmless for any injury, which may result from
that use.
5

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Summary of Contents for General 90-725

  • Page 1 27. Do not use this bandsaw for other than its intended speed before starting to cut. use. If used for other purposes,General® International disclaims any real or implied warranty and holds it 14. Always use a clean, properly sharpened blade.
  • Page 2: Electrical Requirements

    If you choose to do so, you may risk serious per- sonal injury, damage to the motor and voiding the warranty of your machine. We suggest you ask your local General International distributor to recommend GROUNDING INSTRUCTIONS qualified electricians in your area (or perhaps one of...
  • Page 3: Identification Of Main Parts And Components

    IDENTIFICATION OF MAIN PARTS AND COMPONENTS BLADE TENSIONING HANDLE COOLANT RECOVERY TRAY SAW ARM STAND VISE CYLINDER VISE ADJUSTMENT HANDWHEEL BLADE GUIDES (2) MAIN ON/OFF SWITCH RECOVERY TRAY FILTER COOLANT PUMP SWITCH CYLINDER VALVE WHEELS (4) BLADE TENSION INDICATOR BLADE PULLEY COVER GEAR BOX EMERGENCY STOP BUTTON...
  • Page 4: Basic Functions

    Carefully unpack and remove the unit and its components from its shipping container and check for missing or damaged items as per the list of contents below. NOTE: PLEASE REPORT ANY DAMAGED OR MISSING ITEMS TO YOUR GENERAL® INTERNATIONAL DISTRIBUTOR IMMEDIATELY. LIST OF CONTENTS PULLEY COVER .................
  • Page 5: Placement Within The Shop

    PLACEMENT WITHIN THE SHOP / SAFETY ZONE THIS MODEL 90-725 METAL CUTTING BANDSAW IS HEAVY. DO NOT OVER-EXERT. A HOIST OR FORKLIFT WITH STRAPS SHOULD BE USED TO LIFT THIS MACHINE. TO LIMIT THE RISK OF SERIOUS INJURY OR DAMAGE TO THE MACHINE, ANY EQUIPMENT USED TO LIFT THIS MACHINE SHOULD HAVE A RATED CAPACITY IN EXCESS OF 330 LBS (150 KG).
  • Page 6: Installing The Pulley Cover

    BEFORE ASSEMBLING, MAKE SURE THAT THE SWITCH IS IN THE “OFF” POSITION AND THAT THE POWER CORD IS UNPLUGGED. DO NOT PLUG IN OR TURN ON THE MACHINE UNTIL YOU HAVE COMPLETED THE ASSEMBLY AND INSTALLATION STEPS DESCRIBED IN THIS SECTION OF THE MANUAL. INSTALLING THE PULLEY COVER Slide the pulley cover behind the pulleys A and line Attach the cover to the machine using a flat washer...
  • Page 7: Basic Adjustments & Controls

    INSTALL THE COOLANT SYSTEM/RECOVERY TRAY FILTER The coolant system with built-in pump is designed to supply a continuous flow of liquid coolant to the cut- ting area to prevent overheating of both the blade and the workpiece, providing cleaner cuts and prolonging blade life.
  • Page 8: Overload Protection

    MAKE SURE THE MACHINE HAS BEEN TURNED OFF AND UNPLUGGED FROM THE POWER SOURCE BEFORE PERFORM- ING ANY MAINTENANCE OR ADJUSTMENTS. OVERLOAD PROTECTION The magnetic safety switch on this machine is equipped with an overload protection feature. To prevent an elec- trical overload from damaging the motor, in the event of a spike in line voltage or amperage draw, the internal overload protector will automatically be tripped, thereby cutting off power to the motor.
  • Page 9 MAKE SURE THE MACHINE HAS BEEN TURNED OFF AND UNPLUGGED FROM THE POWER SOURCE BEFORE PERFORM- ING ANY MAINTENANCE OR ADJUSTMENTS. INSTALLING A BLADE (CONTINUED) Loosen the blade by turning the tensioning handle Lift the arm into the vertical position. Loosen the lock counterclockwise.
  • Page 10: Adjusting Blade Tension

    MAKE SURE THE MACHINE HAS BEEN TURNED OFF AND UNPLUGGED FROM THE POWER SOURCE BEFORE PERFORM- ING ANY MAINTENANCE OR ADJUSTMENTS. ADJUSTING BLADE TENSION A properly tensioned blade is critical to obtaining maximum performance from any bandsaw. A properly ten- sioned blade will last longer and be much less likely to break prematurely.
  • Page 11 MAKE SURE THE MACHINE HAS BEEN TURNED OFF AND UNPLUGGED FROM THE POWER SOURCE BEFORE PERFORM- ING ANY MAINTENANCE OR ADJUSTMENTS. ADJUSTING BLADE TRACKING (CONTINUED) SHOULDER Adjust the wheel tilt by turning the screw A with a 4 Loosen the blade by turning the handwheel coun- mm Allen key, so that the blade stays against the terclockwise.
  • Page 12: Adjusting The Blade Guides

    MAKE SURE THE MACHINE HAS BEEN TURNED OFF AND UNPLUGGED FROM THE POWER SOURCE BEFORE PERFORM- ING ANY MAINTENANCE OR ADJUSTMENTS. SQUARING THE VISE TO THE BLADE/USING THE VISE (CONTINUED) To adjust the left jaw, loosen bolts A and B using a 20 mm wrench.
  • Page 13: Changing Speeds

    MAKE SURE THE MACHINE HAS BEEN TURNED OFF AND UNPLUGGED FROM THE POWER SOURCE BEFORE PERFORM- ING ANY MAINTENANCE OR ADJUSTMENTS. ADJUSTING THE THRUST BEARINGS The thrust bearing keeps the blade from moving back and out of position when the saw arm pushes against the workpiece.
  • Page 14 MAKE SURE THE MACHINE HAS BEEN TURNED OFF AND UNPLUGGED FROM THE POWER SOURCE BEFORE PERFORM- ING ANY MAINTENANCE OR ADJUSTMENTS. SPEED SELECTION CHART BLADE SPEEDS MOTOR PULLEY SPINDLE PULLEY BELT SPEED fpm) CUTTING FEED RATE/ SAW ARM TENSION A hydraulic cylinder allows adjustments to the downfeed speed of the arm to control cutting speed. Note: The valve must be open in order to adjust the cutting feed rate.
  • Page 15: Immobilizing The Machine

    Use only recommended parts and accessories. The use of parts or accessories NOT recommended by GENERAL® INTERNATIONAL may result in a risk of injury or damage to the machine. Be sure that adjusting wrenches, tools, drinks and other clutter are removed from the machine and/or the table surface before operating.
  • Page 16: Maintenance

    MAKE SURE THE MACHINE HAS BEEN TURNED OFF AND UNPLUGGED FROM THE POWER SOURCE BEFORE PERFORM- ING ANY MAINTENANCE OR ADJUSTMENTS. MAINTENANCE CLEANING After using your bandsaw, sweep up and discard any excess metal chips and debris. Follow this maintenance schedule and refer to any specific instructions given in this section.
  • Page 17: Troubleshooting

    TROUBLE SHOOTING MAKE SURE THE MACHINE HAS BEEN TURNED OFF AND UNPLUGGED FROM THE POWER SOURCE BEFORE PERFORM- ING ANY MAINTENANCE OR ADJUSTMENTS. SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION Workpiece loose in vise Tighten the vise Incorrect feed speed Adjust feed speed Blade teeth space too large Replace the blade Material too coarse...
  • Page 18 TROUBLE SHOOTING MAKE SURE THE MACHINE HAS BEEN TURNED OFF AND UNPLUGGED FROM THE POWER SOURCE BEFORE PERFORM- ING ANY MAINTENANCE OR ADJUSTMENTS. SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION Blade teeth too coarse Use finer tooth blade Speed too high Reduce speed Feed pressure too high Reduce feed pressure with cylinder Reduce speed, increase feed pres-...

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