Grizzly G9743 owner manual Service, Troubleshooting

Page 32

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix your machine if a problem develops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical Support at (570) 546-9663.

Troubleshooting

Motor & Electrical

Symptom		Possible Cause	Possible Solution
Machine does not start		1. E-Stop button pressed.	1. Twist E-Stop button until it pops out.
or a breaker trips.		2. Plug/receptacle is at fault or wired incorrectly.	2. Test for good contacts; correct the wiring.
		3. Start capacitor is at fault.	3. Test/replace if faulty.
		4. Wall fuse/circuit breaker is blown/tripped.	4. Ensure correct size for machine load; replace
			weak breaker.
		5. Motor connection wired incorrectly.	5. Correct motor wiring connections.
		6. Power supply is at fault/switched OFF.	6. Ensure hot lines have correct voltage on all legs
			and main power supply is switched ON.
		7. Motor ON/OFF switch is at fault.	7. Replace faulty ON/OFF switch.
		8. Wiring is open/has high resistance.	8. Check for broken wires or disconnected/cor-
			roded connections, and repair/replace as nec-
		9. Motor is at fault.	essary.
		9. Motor is at fault.	9. Test/repair/replace.
Machine	stalls or is	1. Wrong blade for the workpiece material.	1. Use blade with correct properties for your type
underpowered.			of cutting.
		2. Wrong workpiece material.	2. Use metal with correct properties for your type
			of cutting.
		3. Feed rate/cutting speed too fast for task.	3. Decrease feed rate/cutting speed.
		4. Blade is slipping on wheels.	4. Adjust blade tracking and tension.
		5. Low power supply voltage.	5. Ensure hot lines have correct voltage on all
		6. Motor bearings are at fault.	legs.
		6. Motor bearings are at fault.	6. Test by rotating shaft; rotational grinding/loose
			shaft requires bearing replacement.
		7. Plug/receptacle is at fault.	7. Test for good contacts; correct the wiring.
		8. Motor connection is wired incorrectly.	8. Correct motor wiring connections.
		9.Motor has overheated.	9.Clean off motor, let cool, and reduce workload.
		10.Motor is at fault.	10.Test/repair/replace.
Machine	has vibration	1. Motor fan is rubbing on fan cover.	1. Replace dented fan cover; replace loose/dam-
or noisy operation.		2. Blade is at fault.	aged fan.
		2. Blade is at fault.	2. Replace/resharpen blade.
		3. Gearbox is at fault.	3. Rebuild gearbox for bad gear(s)/bearing(s).
		4. Wrong blade & too slow of speed.	4. Change blade and or speed.

-30-	G9743 7" x 12" Metal-Cutting Bandsaw

Image 32

Contents Model G9743 Page Table of Contents Maintenance Contact Info IntroductionForeword 375 lbs Precision Ground Cast Iron Identification Safety Safety Instructions for MachineryAlways Lock Mobile Bases if Used Before Operating Machinery Safety Instructions for Metal Cutting Bandsaws 110/220V Operation Wiring forCircuit Requirements Grounding Extension Cords SET UP Set Up SafetyItems Needed for Set Up UnpackingHardware Bag Box Contents Figure QtyInventory Hardware Recognition Chart Clean Up Site ConsiderationsTo install the work stop Shipping BracketWork Stop To remove the shipping bracketTo install the wheels To install the chip screenWheels Chip ScreenTest Run Recommended AdjustmentsFactory adjustments that should be verified Operation Safety OperationsVise To use the positive lockBlade Speed Material Feet Per MinuteTo use the cutting fluid system Blade SelectionCutting Fluid System Cutting Fluid To adjust the blade guides Blade GuidesFeed Rate To set the feed rateOperation Tips Tips for horizontal cuttingAccessories H5405-LenoxLube TubeH1300 H1298 G7984 H2347 H0736 H1302-Standard EarmuffsH1302 H4979 H4977 Maintenance CleaningSchedule LubricationMaintenance Log Date Approximate Hours Of Use Maintenance PerformedService TroubleshootingBandsaw Operations Blade Change To change the blade on the bandsawTo adjust the blade tracking on the bandsaw Blade TrackingSteps Blade Guide Bearings onTo square the blade to the bed of the table Blade Tension Squaring the BladeTo tension the blade on the bandsaw To adjust the blade guide bearings Blade Guide BearingsElectrical Components Circuit breakerContactor wiring G9743 7 x 12 Metal-Cutting Bandsaw 110V Wiring Diagram 220V Wiring Diagram Base/Stand Head Misc. Assemblies Gearbox Electrical Box Parts List DescriptionPSB03 ADJ Bracket Front Assy Safety Label Placement Warranty and Returns G9743 7 x 12 Metal-Cutting Bandsaw Warranty Card CommentsGrizzly INDUSTRIAL, INC BOX BELLINGHAM, WAPage Call Today For a Free Full Color Catalog