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Section 2 

Using with and adjusting Tool Rest 

Using the sander with the tool rest makes for repeatable angles as well as a safer way to grind against an 
object. 

The standard tool rest adjust from 0 degrees (90 degrees perpendicular to the belt) down to 22 degrees (112 
degrees relative to the belt.) 

To adjust the tool rest, turn off the sander. Slightly loosen the lower spindle knob. Adjust tool rest to desired 
angle. Re-tighten knob firmly before restarting the sander. 

From the factory there is a 0.04” to 0.063” (1 – 1.5mm) gap between the belt and tool rest. This is too 
discourage parts from being lodged between the tool rest and the belt. If the gap becomes too small, grinding 
sparks may deflect against the tool rest. The the gap because too large, it becomes easier to get small parts 
stuck between the tool rest and the belt. DeBurr-It! recommends replacing the tool rest of the gap increases 
beyond 0.20” (5mm.)  

ALWAYS WEAR EYE AND BREATHING PROTECTION WHEN USING ANY ABRASIVE TOOLS. ABRASIVE DUST IS 
TOXIC TO YOUR HEALTH. 

To operate sander, turn on unit. Using moderate pressure, push the work piece against the abrasive belt. Let 
the piece rest on the tool rest, using your hands to guide the piece into and along the abrasive surface. 
Applying too much pressure will overheat and possibly damage your workpiece.  

 

 

Summary of Contents for DeBurr-It! 248-3

Page 1: ...l Belt Sander Model 248 3 USER MANUAL Revised 07 01 14 Copyright 2014 DeBurr It Abrasive Tool Division of PCE Midwest LLC 812 Warehouse Rd Toledo OH 43615 Belt sander is protected by multiple applied for patents ...

Page 2: ...ts 6 Changing sander frame angle 8 Changing sander direction if applicable 9 Section 2 Use Use with tool rest 10 Use without tool rest 11 Variable speed if applicable 12 Cleaning 13 Section 3 Troubleshooting Vibration issues 14 Belt slippage and belt wobbling 15 Variable Speed Drive 16 Customer service contact info 17 ...

Page 3: ...FROM THE SIDE COVER This is only a protective cover and not made to lift the weight of the sander Contents of the crate of the crate will be 1x Complete Sander unit with a prewired for 115v power cable and switch if single phase unit or direct wired for three phase control 1x Precision washer 1x Warranty slip Thoroughly check the unit for any damage and notify DeBurr It right away if any is found ...

Page 4: ...ds for specifically for its sander Lag the stand firmly to the ground or attach the base of the motor securely to a heavy duty table using 5 16 18 bolts washers and lock nuts of a minimum of grade 5 hardware Single Phase Plug the unit into a grounded 115v outlet The receptacle and circuit current rating should be rated for 15A minimum Three Phase Connect the three power conductors of the whip to D...

Page 5: ...5 ...

Page 6: ...TEN OR YOU WILL DAMAGE THE UNIT Adjusting Runout of New or Used Belts All belts will have to be adjusted at one point or another due to wear or due to their manufacturing process DISCONNECT POWER BEFORE CHANGING BELTS DeBurr It uses another in house innovative design to quickly line belts back up No tools required and takes just seconds Below is a diagram of the adjustments you will need to use Lo...

Page 7: ... Runout Adjustment slightly clockwise Turn on the sander Adjust the Belt Runout Adjustment until the belt is centered on the top crowned idler IMPORTANT DO NOT RUN THE BELT FOR AN EXCESSIVELY LONG TIME WITH IT BIASED EXTREMELY TO ONE SIDE OR THE OTHER OF ANY OF THE PULLEYS DAMAGE TO RUNNING COMPONENTS AND OR FRAME WILL OCCUR While the machine is still on retighten the lockscrews finger tight The b...

Page 8: ...MPTING TO CHANGE THE ANGLE OF THE FRAME Remove the abrasive belt Remove the 3 of the 4 mounting bolts Securely grasp the frame and remove the last bolt Using the babbit as a guide rotate the frame in 45 degree increments to the closest indexed position of the desired angle Lower Mounting Bolts Reattach the mounting hardware securely The frame must be sitting flat against the C face of the motor or...

Page 9: ...il and pay attention to any belt adjustments that need to be made Single Phase Follow directions on motor nameplate for which wires to change Three Phase DOL only Swap any two phases Three Phase reversing control Select the opposite direction of current rotation VFD Selector switch operator should be installed to reverse direction on the VFD direction input If equipped with foot switch control no ...

Page 10: ...est This is too discourage parts from being lodged between the tool rest and the belt If the gap becomes too small grinding sparks may deflect against the tool rest The the gap because too large it becomes easier to get small parts stuck between the tool rest and the belt DeBurr It recommends replacing the tool rest of the gap increases beyond 0 20 5mm ALWAYS WEAR EYE AND BREATHING PROTECTION WHEN...

Page 11: ... and remove the belt Remove the lower spindle knob completely Remove the tool rest and put in place the supplied precision washer Reinstall the lower spindle knob and tighten as you would if the tool rest was there Reinstall the belt and perform the retensioning procedure Exploded and Assembled Views To operate turn on the unit Only use enough pressure against the abrasive belt so you do not loose...

Page 12: ...the speed of any single or polyphase AC induction motor Please consult DeBurr It technical department if you are using a non supplied VFD If no FORWARD REVERSE control operator is supplied jump the terminals COM to the desired direction IMPORTANT NEVER OVERRIDE DEFAULT DEBURR IT PARAMETER SETTINGS WITHOUT CONSULTING DEBURR IT TECHNICAL DEPARTMENT All parameters have been throroughly tested and cha...

Page 13: ...ill a clean soft dry cloth such as a tshirt rag Using low pressure compressed air 15 psi blow off bearings and around the drive pulley Too much pressure could pop the dust seals off of the bearings Wipe down the unit completely again with a clean rag and a mild cleaner such as Simple Green IMPORTANT DO NOT WASH DOWN THE SANDER WILL RUNNING WATER After giving the unit a good cleaning check all moun...

Page 14: ...eplace drive wheel Vibration of Lower or Upper Idler Wheels First make sure upper and lower spindle handles knobs are tight Inspect the tightness of each spindle screw If any spindle screw is loose carefully remove spindle and apply Loctite 249 and reinstall Torque to 21 ft lbs 30 Nm Remove belt and check each idler by hand for any rough or broken bearings If any bearing is broken DeBurr It will r...

Page 15: ...er assembly 3 Reinstall the first standard nut until it starts to compress the tension spring continue a half turn 4 Reinstall the nylon lock nut against the first nut 5 While holding the nylon nut in place with one wrench turn the first nut in the loosen direction to tighten against the nylon nut If procedure fails to tension belt replace tension spring Belt wobbling can occur if the upper or low...

Page 16: ...stop the sander and let the VFD cool Provide a cooler ambient running conditions or stop using the sander Unit will not respond to speed changes Check the connections on the back of the potentiometer and on the input connections on the drive Potentiometer is 10k ohm max of resistance Refer to VFD manufacturer user manual and check parameters to view minimum and maximum set frequencies Minimum freq...

Page 17: ...rit com Please include the model number serial number and a short summary of the problem you are having We will contact you as soon as possible Our website is always being updated with technical documents and video procedure Please visit it often for updates www deburrit com ...

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