Grizzly G0756 owner manual Service, Troubleshooting, Motor & Electrical

Page 37

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section if a problem develops with your machine. If you need replacement parts or additional help with a procedure, call our Technical Support at (570) 546-9663. Note: Please gather the serial number and manufacture date of your machine before calling.

Troubleshooting

Motor & Electrical

Symptom

Possible Cause

Possible Solution

Machine

does not

1.

emergency stop push-button engaged/at

1.

Rotate button to reset/replace it.

start or

a breaker

 

fault.

 

 

trips

 

2.

Chuck guard open/safety switch at fault.

2.

Close guard/replace switch.

 

 

 

 

3.

spindle position limit switch engaged/at

3.

Adjust spindle position to disengage limit switch;

 

 

 

fault.

 

replace switch.

 

 

4.

Power supply switched OFF or at fault.

4.

Ensure power supply is on/has correct voltage.

 

 

5.

Plug/receptacle at fault/wired wrong.

5.

Test for good contacts; correct the wiring.

 

 

6.

Motor connection wired wrong.

6.

Correct motor wiring connections (Page 41).

 

 

7.

Wall circuit breaker tripped.

7.

Ensure circuit size is correct/replace weak breaker.

 

 

8.

Wiring open/has high resistance.

8.

Check/fix broken, disconnected, or corroded wires.

 

 

9.

Master power switch at fault.

9.

Replace switch.

 

 

10. Motor or motor components at fault.

10. Test/repair/replace.

 

 

 

 

 

Machine stalls or is

1.

Feed rate/cutting speed too fast.

1.

Decrease feed rate/cutting speed.

overloaded.

2.

Wrong tooling.

2.

Use the correct tool for the task.

 

 

3.

Machine is undersized or tooling is incorrect

3.

Use smaller or sharper tool; reduce feed rate or

 

 

 

for the task.

 

spindle speed; use coolant if possible.

 

 

4.

Motor connection is wired incorrectly.

4.

Correct motor wiring connections (Page 41).

 

 

5.

Motor bearings are at fault.

5.

Test by rotating shaft; rotational grinding/loose shaft

 

 

 

 

 

requires bearing replacement.

 

 

6.

Motor has overheated.

6.

Clean off motor, let cool, and reduce workload.

 

 

7.

Motor or motor components at fault.

7.

Test/repair/replace motor.

 

 

 

 

 

Machine has

1.

Excessive depth of cut.

1.

Decrease depth of cut.

vibration or noisy

2.

Tooling is loose or improperly installed.

2.

Make sure tooling is properly secured.

operation.

3.

Machine is incorrectly anchored or sits

3.

Tighten/replace anchors; relocate/shim machine.

 

 

 

unevenly.

 

 

 

 

4.

Motor or machine component is loose.

4.

Inspect/replace stripped or damaged bolts/nuts, and

 

 

 

 

 

re-tighten with thread locking fluid.

 

 

5.

Tooling is dull or at fault.

5.

Replace/resharpen tooling.

 

 

6.

Bit is chattering.

6.

Replace/sharpen bit; index bit to workpiece; use

 

 

 

 

 

appropriate feed rate and cutting RPM.

 

 

7.

Motor fan is rubbing on fan cover.

7.

Replace dented fan cover or damaged fan.

 

 

8.

Motor bearings are at fault.

8.

Test by rotating shaft; rotational grinding/loose shaft

 

 

 

 

 

requires bearing replacement.

 

 

 

 

 

 

Model G0756 (Mfg. Since 2/13)

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Contents Model G0756 Industrial Drill Press Page Table of Contents Machine Description Manual Accuracy IntroductionContact Info Identification Control Panel Machine Data Sheet Main Specifications Operation Info Safety Instructions for Machinery SafetyPage Safety for Drill Presses Availability Power SupplyFull-Load Current Rating Circuit Requirements forExtension Cords Grounding InstructionsMinimum Gauge Size 14 AWG 50 ftNeeded for Setup SetupUnpackingInventory Inventory see Figure QtyBefore cleaning, gather the following CleanupBasic steps for removing rust preventative Site Considerations Anchoring to Floor Lifting & PlacingAnchoring to Concrete Floors Initial Lubrication Arbor/Chuck AssemblyTo connect the drill chuck with the arbor To connect the power cord to the machine Power ConnectionTest Run Master power switch Model G0756 Mfg. Since 2/13Emergency To test the coolant system Test Coolant SystemSpindle Break-In To perform the spindle break-in procedureOperations Tooling Installation RemovalOperations Overview Removing Tooling with Automatic Drift Installing Tapered ToolingRemoving Tooling Manually Table Positioning Depth StopRaising/Lowering Table Rotating TableTo determine the needed RPM Selecting SpindleDrilling Mode Automatic Power Downfeed To use tapping mode Tapping Mode Coolant SystemTo operate the coolant system G1075-52-PC. Clamping Kit ACcESSORIESH7616 H7617 G3658-Titanium Drill BitsH8262-1⁄2 x MT#4 Keyless Chuck with Integral Shank H7819-Drill & Tap HSS 24 pc. SetCleaning Protecting MaintenanceSchedule Headstock Lubrication LubricationTo change oil in headstock Oil Flow Sight GlassBall Oilers Changing CoolantTroubleshooting ServiceSymptom Possible Cause Possible Solution Motor & ElectricalDrill Press Operations Torque Limiter Replacing Lamp BulbTo replace the bulb in the work lamp Wiring Safety Instructions WiringComponent Location Index Wiring OverviewElectric Clutch Wiring Power Connection WiringHot 220 VAC PlugSpindle motor wiring Motor & Pump WiringViewed from behind Control Panel & Limit Switches QM5 QM3 QM2 QM1 Electrical Panel WiringElectrical wiring panel Model G0756 Mfg. Since 2/13 Electrical Wiring Panel PhotoTable Support & Coolant Breakdown PartsDescription Table Support & Coolant Parts ListGearbox Breakdown Gearbox Breakdown Gearbox Parts List Spindle Feed Breakdown Spindle Feed Parts List Headstock Breakdown Headstock Breakdown Headstock Parts List Electrical Parts Breakdown Description Electrical Parts List506 502 503 501 508 509 507 510 504 511 505 512 513 Labels & CosmeticsComments Warranty CardBOX BELLINGHAM, WA Grizzly INDUSTRIAL, INCWarranty & Returns
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