Grizzly G9983 instruction manual Air Inlet

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Air System

Various functions on the Model G9983 are con- trolled through the air system. Since this is a com- plex network of hoses and valves, please take some time to familiarize yourself with each item so you can better understand your machine dur- ing adjustments.

The illustration below follows the air travel through the machine to familiarize you with how it works. Match the letters in the text with those in the illustration to learn more about each function.

1.The air flows into the machine at the pres- sure regulator (A). This should be adjusted to 75 PSI.

2.The solenoid valve (C) controls the brake caliper (B) when signaled by the emergency stop switch or the limit switches.

3.The switching valve (E) controls the vertical cylinder (D) which raises/lowers the top roller

(M) to tighten/loosen the sanding belt.

4.The valve (G) controls the air flow volume that goes to the air eye fork (F), which con- trols the belt oscillation return.

5.The diaphragm (H) actuates the switching valve (I) depending on whether air is coming from the eye fork (F) or the pressure regula- tor (A).

6.Switching valve (I) actuates the diaphragm (J), which controls oscillation arm (K), which in turn, moves eccentric shaft (L), which makes top roller (M) shift back and forth to control belt movement during operation.

7.Valve (O) controls the speed at which the belt moves back and forth.

8.Knob (N) allows you to rotate the eccentric shaft (L) to balance the oscillation timing so it takes the belt the same amount of time to move in one direction as it moves in the other direction.

M

N

F L

O

I

H

P

D

E

J K

G

B

C

F

Air Inlet

A

This is an illustration of the air control system.

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G9983 15" Open-End Wide-Belt Sander

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Contents OPEN-END WIDE-BELT Sander Page Table Of Contents Safety Safety Instructions For Power ToolsLength AMP Rating 25ft 50ft 100ftAdditional Safety Instructions For The Wide-Belt Sander Introduction 220V Single-Phase Circuit RequirementsGrounding WiringExtension Cords Machine Features External Features Control PanelAccess Doors These items are behind Left-hand access doorUnpacking SET UPPiece Inventory Hardware Recognition Chart MeasureClean Up Site ConsiderationsTo install the handwheel handle Beginning AssemblyHandwheel Handle To insert the platen PlatenTo set the platen even with the belt rollers To install a sanding belt Air HoseSanding Belt To connect the air hoseTo Tighten Belt Tension Sanding Belt Tension Pressure RollersTo Loosen Belt Tension Dust Collection Test Run Before you test run your machineRecommended Adjustments Recommended adjustment checklistOperations Before StartingChoosing Sandpaper Grit TypeConveyor Height Feed Belt Speed To change feed belt speeds Unplug the sanderLoad Meter Operation This is the load meterPlaten Depth Cleaning Pads Three basic platen positionsMaintenance Cleaning Sanding BeltsGeneral Emptying FiltersDate Approximate Hours Of Use Maintenance Performed Service Adjustments Oscillation TimingOscillation Speed Use the knob on this valve to control Oscillation speedLimit Switches To adjust the oscillation returnTo adjust the limit switches Oscillation ReturnTo adjust the pressure roller depth Unplug the sander Pressure Roller DepthTo adjust the pressure roller tension Unplug the sander Pressure Roller TensionTo adjust the feed belt tracking Unplug the sander Feed Belt TensionFeed Belt Tracking To check the feed belt trackingBelt Tension Replacing V-BeltsG9983 15 Open-End Wide-Belt Sander Platen Graphite Air System To replace the graphite sheetReplacing Brakes Date Approximate Hours Of Use Service Performed Closure Machine Data Sheet Air Inlet Motor 5 6 8 9 10 11 14 Model G9983 Wiring Diagram 220 Volt Single Phase G9983 Parts Breakdown Platen Tool109108 124 111 110 112 Machine Base Roller Bracket LH G9983 Contact Roller Base 414 Machine Frame 621 622 620 601 619 623 Control BOX Troubleshooting Symptom Possible Cause Corrective ActionTion Warranty and Returns Warranty Card Grizzly INDUSTRIAL, INC Page Call Today For a Free Full Color Catalog