Grizzly G0646, G0647 owner manual Service, Troubleshooting, Motor & Electrical

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troubleshooting

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel- ops. 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	1.	Main Power switch turned off.	1.	Rotate Main Power switch to ON or 1.
start or	a breaker	2.	Emergency Stop push-button is engaged/	2.	Rotate clockwise slightly until it pops out/replace it.
trips.			faulty.
			faulty.
		3.	Plug/receptacle is at fault or wired incor-	3.	Test for good contacts; correct the wiring.
			rectly.
		4.	Motor connection wired incorrectly.	4.	Correct motor wiring connections (Page 56).
		5.	Wall fuse/circuit breaker is blown/tripped.	5.	Ensure circuit size is suitable for this machine;
					replace weak breaker.
		6.	Thermal overload relay has tripped.	6.	Turn cut-out dial to increase working amps and push
					the reset pin. Replace if tripped multiple times (weak
					relay).
		7.	Contactor not getting energized/has burnt	7.	Test for power on all legs and contactor operation.
			contacts.		Replace unit if faulty.
		8.	Power supply switched OFF or is at fault.	8.	Ensure power supply is switched on; ensure power
					supply has the correct voltage.
		9.	Wiring is open/has high resistance.	9.	Check for broken wires or disconnected/corroded
					connections, and repair/replace as necessary.
		10. Motor Start button or Main Power switch is		10. Replace faulty Start button or Main Power switch.
			at fault.
		11. Motor is at fault.		11. Test/repair/replace.

Machine stalls or is		1.	Wrong workpiece material.	1.	Use only metal with a hardness of 45 kg/mm2 or less
overloaded.					and is within capacities of machine.
		2.	Motor connection is wired incorrectly.	2.	Correct motor wiring connections (Page 56).
		3.	Plug/receptacle is at fault.	3.	Test for good contacts; correct the wiring.
		4.	Motor bearings are at fault.	4.	Test by rotating shaft; rotational grinding/loose shaft
					requires bearing replacement.
		5.	Machine is undersized for the task.	5.	Use sharp tooling; keep workpiece within the capaci-
					ties of machine; use cutting lubricant.
		6.	Motor has overheated.	6.	Clean off motor, let cool, and reduce workload.
		7.	Contactor not getting energized or has poor	7.	Test for power on all legs and contactor operation.
			contacts.		Replace if faulty.
		8.	Motor is at fault.	8.	Test/repair/replace.
		9.	Hydraulic fluid low in reservoir.	9.	Fill hydraulic reservoir (Page 40).
		10. Hydraulic fluid pressure too low; hydraulic		10. Test/adjust for correct hydraulic fluid pressure (Page
			pump at fault.		50), replace pump if necessary.
		11. Hydraulic system has leaks or valves at		11. Check/repair/replace hydraulic hoses, connections,
			fault.		and valves.

G0646/G0647 50/65 Ton Ironworker					-43-

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Contents 50/65 TON Ironworker Page Table of Contents Introduction Foreword Functional OverviewContact Info Identification G0646 Machine Data Sheet G0646/G0647 50/65 Ton Ironworker G0647 Machine Data Sheet G0646/G0647 50/65 Ton Ironworker Safety Instructions for Machinery G0646/G0647 50/65 Ton Ironworker Additional Safety Instructions for Ironworkers Additional Safety Instructions for Hydraulics Power Connection Device Power Supply Circuit RequirementsCircuit Requirements 220/440V Operation440V Conversion To rewire the Model G0646/G0647 for 440V operationSetup Safety SetupItems Needed for Setup UnpackingInventory Figure Qty Inventory Clean UpSite Considerations Placement LocationMoving & Placing Base Unit Floor LoadUsing Machine Mounts Mounting to Shop FloorBolting to Concrete Floors To test run the machine Test RunFactory adjustments that should be verified Recommended AdjustmentsOperation Safety OperationsBasic Controls Operation Tips Using the Punching StationPunching Motor Stop Button Turns the motor OFFRemoving/Installing Punch Tooling Tools Needed QtyTo remove punch tooling Punch, adapter, retaining ring, Die installed To install punch toolingBolster Mounting Hex Bolts 4 shown Using the Notching Station Removing & Installing Notch DiesNotching Notch Die Clearances To install the notch diesPage To avoid tooling or workpiece breakage Flat Stock ShearingTo shear flat stock To shear bar stock Bar Stock ShearingExtension Bar Angle Iron ShearingMaking a 90 Cut Making a Less Than 90 Cut Adjusting Stroke Length Beam Lubrication Accessories H7379-Tapmatic#1 Gold 16 oz H7380-Tapmatic#1 Gold 1 GalT20448T20452 T20501 T20456 H0736 Available Tooling Maintenance Cleaning ProtectingSchedule Shearing Hold-Down Adjustment Rod LubricationBeam Pivot Shaft Support Frame Lubrication Hydraulic System Filling Hydraulic ReservoirFluid Capacity Draining & Re-Filling Hydraulic ReservoirTo drain and re-fill the hydraulic reservoir To align the beam Beam AlignmentService TroubleshootingMotor & Electrical Operations To remove and replace the flat stock shearing dies Flat Stock Shearing DiesTo remove the angle iron shearing dies Angle Iron Shearing DiesTo remove and replace the bar stock shearing dies Bar Stock Shearing DiesDisconnect Machine from Power Shearing Table Alignment To reset the position of the limit rings Limit RingsHydraulic Fluid Pressure Electrical Panel Wiring Control Panel Wiring Electrical Panel Wiring Diagram Control Panel Wiring Diagram Limit switch wiring Electrical Components Wiring DiagramMotor wiring G0646/G0647 50/65 Ton Ironworker Motor Wiring DiagramHydraulic System Overview Parts Description G0646 Upper Front-Half Parts ListG0647 Upper Front-Half Parts List Half UpperG0646 Upper Rear-Half Parts List Description G0647 Upper Rear-Half Parts ListCabinet G0646 Cabinet G0647 Cabinet Notching Station Punching Station Extension Bar & Tools Label Placement Page Page Warranty and Returns