Jet Tools Drum Sander User Manual

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Operating Instructions and Parts Manual

Drum Sander

Model 22-44 Plus

WMH TOOL GROUP

shown with optional infeed-outfeed tables and open s tand

WARRANTY AND SERVICE

WMH Tool Group, Inc., warrants every product it sells. If one of our tools needs service or repair, one of our Authorized Service Centers located throughout the United States can give you quick service. In most cases, any of these WMH Tool Group Authorized Service Centers can authorize warranty repair, assist you in obtaining parts, or perform routine maintenance and major repair on your JET your area call 1-800-274-6848.

MORE INFORMATION

WMH Tool Group is consistently adding new products to the line. For complete, up-to-date product information, check with your local WMH Tool Group distributor, or visit jettools.com.

WARRANTY

JET products carry a limited warranty which varies in duration based upon the product (MW = Metalworking, WW = Woodworking).

WHAT IS COVERED?

This warranty covers any defects in workmanship or materials subject to the exceptions stated below. Cutting tools, abrasives and other consumables are excluded from warranty coverage.

WHO IS C OVERE D?

This warranty covers only the initial purchaser of the product.

WHAT IS THE PERIOD OF COVERAGE?

The general JET warranty lasts for the time period specified in the product literature of each product.

WHAT IS NOT COVERED?

Five Year Warranties do not cover woodworking (WW) products used for commercial, industrial or educational purposes. Woodworking products with Five Year Warranties that are used for commercial, industrial or education purposes revert to a One Year Warranty. This warranty does not cover defects due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear, improper repair or alterations, or lack of maintenance.

HOW TO GET SERVICE

The product or part must be returned for examination, postage prepaid, to a location designated by us. For the name of the location nearest you, please call 1-800-274-6848.

You must provide proof of initial purchase date and an explanation of the complaint must accompany the merchandise. If our inspection discloses a defect, we will repair or replace the product, or refund the purchase price, at our option. We will return the repaired product or replacement at our expense unless it is determined by us that there is no defect, or that the defect resulted from causes not within the scope of our warranty in which case we will, at your direction, dispose of or return the product. In the event you choose to have the product returned, you will be responsible for the shipping and handling costs of the return.

HOW STATE LAW APPLIES

This warranty gives you specific legal rights; you may also have other rights which vary from state to state.

LIMITATIONS ON THIS WARRANTY

WMH TOOL GROUP LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT. EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OR MERCHANTABILITY AND FITNESS ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG THE IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.

WMH TOOL GROUP SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMI TATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.

WMH Tool Group sells through distributors only. The specifications in WMH catalogs are given as ge neral information and are not binding. Members of WMH Tool Group reserve the right to effect at any tim e, without prior notice, those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason whatsoever.

® branded products are not sold in Canada by WMH Tool Group.

JET

® t ools. For the name of an Authorized Service Center in

Table of Contents

Table of Contents....................................................................................................................................3

Warning...................................................................................................................................................4

Introduction..............................................................................................................................................6

Specifications..........................................................................................................................................6

Features and Terminology....................................................................................................................... 7

Unpacking............................................................................................................................................... 8

Contents of the Shipping Container......................................................................................................8

Assembling the Open Stand (Optional Accessory) ...................................................................................9

Casters (Optional Accessory)...............................................................................................................9

Assembly...............................................................................................................................................10

Installing Drum Head ........................................................................................................... ...............10

Installing Conveyor Table...................................................................................................................10

Infeed and Outfeed T ables (Optional Accessory )................................................................................10

Dust Cover.........................................................................................................................................11

Dust Collection...................................................................................................................................11

Installing Abrasives............................................................................................................................11

Grounding Instructions...........................................................................................................................13

Extension Cords.................................................................................................................................14

Adjustments...........................................................................................................................................14

Drum Height Control...........................................................................................................................14

Switch Lockout...................................................................................................................................14

Depth Gauge......................................................................................................................................14

Conveyor Belt T ensi on and Trac k ing..................................................................................................15

Trackers.............................................................................................................................................15

Conveyor Belt Replacement...................................................................................................... .........15

Checking Drum Alignment..................................................................................................................16

Fine Tuning Drum Alignment..............................................................................................................17

Tension Roller Alignment....................................................................................................................18

Tension Roller Pressure Adjustment...................................................................................................18

Drum Height Control Adjustment........................................................................................................19

Operation...............................................................................................................................................19

Basic Operati ng P r oc edur e.................................................................................................................19

Setting Depth of Cut...........................................................................................................................19

Establishi ng P r oper Dr um Hei ght........................................................................................................19

Selecting SandSmart™ Feed Rates ...................................................................................................20

Tips for Maximum Pe rformance..........................................................................................................20

Maintenance..........................................................................................................................................21

Tracker Kit (98- 0080).............................................................................................................................22

Abrasives...............................................................................................................................................23

Troubleshooting: Motor and Electric al Problems.....................................................................................24

Troubleshooting: Mechanical Problems..................................................................................................24

Troubleshooting: Operational Problems .................................................................................................26

Optional Accessories .............................................................................................................................27

Replacement Parts................................................................................................................................27

Conveyor and Motor Assem bly...........................................................................................................28

Parts List: Conveyor and Motor Assembly ..........................................................................................29

Drum Head Assembly.........................................................................................................................30

Parts List: Drum Head Assembly........................................................................................................31

Parts List: Open Stand – #609004 (Optional Accessory).....................................................................33

Parts List: Closed St and – #609005 ( Optional Accessory) ..................................................................34

Parts List: Inf eed and Outfeed Tables – #98-2202 (Optional Accessory).............................................35

Electrical Connections ...........................................................................................................................36

Warning

1. Read and understand thi s ent ire manual before attempting assembly or operation.

2. Read and understand the warnings po sted on the m achine and i n thi s manual. Failur e to comply wit h

all of these warnings m ay cause seriou s i njury.

3. Replace the warning labels if they become obscured or removed.

4. This sander is designed and int ended for use by proper ly t rained and experi enced personnel onl y. If

you are not f amiliar wit h the proper and safe operati on of a sander, do not use unt il proper training and knowledge have been obtained.

5. Do not use this sander for other than i ts intended u se. If used f or other pur poses, WM H Tool Group

disclaim s any real or i mplied warrant y and h olds itsel f harml ess from any injury t hat may r esult f rom that use.

6. Always wear appr oved safety glasses/face shields while usi ng this sander. Everyday eyeglasses only

have impact resistant lenses; they are not safet y gl asses.

7. Before operati ng this sander, rem ove tie, ri ngs, watches and other j ewelry, and r oll sleeves up past

the elbows. Rem ove all l oose clothing and confine long hair . Non-slip footwear or anti-skid floor strips are recommended. Do not wear gloves.

8. Wear ear protector s (plugs or muffs) during extended peri ods of oper ation.

9. Some dust created by power sanding, sawing, grinding, drilling and other construction activities

contain chemi cals known to cause cancer , bir th defects or other r eproductiv e harm . Some examples of these chemic als are:

• Lead from lead based paint.

• Crystalli ne sil ic a from bricks, cement and other masonry pr oduc ts.

• Arsenic and chromium from chemically treated lumber .

Your risk of exposure varies, depending on how often you do this type of work. To reduce your exposure to these chemicals, work in a well-ventilated area and work with approved safety equipment, such as face or dust masks that are specifically designed to filter out microscopic particles.

10. Do not oper ate this machine while tir ed or under the influence of drugs, alcohol or any m edic ation.

11. Make certain the switch is in the OFF position before connect ing the machine to the power supply.

12. Make certain the machine is proper ly grounded.

13. Make all machine adjustm ents or maintenance with the machine unplugged f rom the power source.

14. Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting

wrenches are removed from the machine before turning it on.

15. Keep safety guards in place at all times when the machine is in use. If removed for maintenance

purposes, use extreme caution and replace the guards immediately.

16. Make sure the sander is firmly secured to the stand or work tabl e before use.

17. Check damaged parts. Before further use of the machine, a guard or other part that is damaged

should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment of moving part s, binding of moving parts, br eakage of parts, mounting and any other condi ti ons that m ay affect its operati on. A guard or ot her part that i s damaged shoul d be properly repaired or replaced.

18. Pr ovide for adequate space surrounding work area and non-glar e, overhead lighting.

19. Keep the floor around the machi ne cl ean and free of scrap material, oil and grease.

20. Keep v isitors a safe distance from the work area. Keep children away.

blahblahblah

21. Make your workshop child proof wi th padlocks, master switches or by remov ing starter keys.

22. Giv e your work undivi ded attention. Looking ar ound, carryi ng on a conversation and “ horse-play” ar e

careless acts that can r esul t in serious injury.

23. M aintain a balanc ed stance at all t imes so that you d o not fall or lean against movi ng parts. Do not

overreach or use exc essive force to perform any machine operation.

24. S tand to one side of the conv eyor and m ake sure no one else is standing i n line with t he convey or

while feeding i nto the machine. Should a part sli p while being fed, it may exit t he machine at a high rate of speed and can cause injuries to anyone standing directly in front of the infeed.

25. Use the ri ght t ool at the corr ect speed and f eed rat e. Do not forc e a tool or att achment to do a job for

which it was not designed. T he ri ght tool will do the job better and safer.

26. Use recom mended accessories; improper accessories m ay be hazardous.

27. Maintain tools with care. Keep abrasives clean for the best and safest performance. Follow

instructions for lubricating the machine and changing accessories.

28. Always feed stock against the rotation of the drum.

29. Keep your hands clear when feeding parts onto the conveyor. The part will be forced down as it

begins to feed, causi ng a pinc hing ac tion bet ween the part and the c onv eyor bed. Nev er reach i nto a running mac hine. Turn off sander and disconn ect f rom power befor e att empting to ret riev e parts fr om beneath the drum.

30. Turn of f the m achine and discon nect f rom power bef ore cleani ng. Use a bru sh or com pressed air to

remove chips or debris — do not use your hands.

31. Do not stand on the machine. Serious injur y c ould oc cur if the machine tips over.

32. Never leave the machine r unning unattended. Turn t he power off and do not leave the machine until it

comes to a complete stop.

33. Remove loose items and unnecessary work pieces from the area befor e start ing the machine.

Familiariz e y our self with the following safety notices used in this manual:

This means that if precautions are not heeded, it may result in minor injury and/or

possible machine damage.

This means that if precautions are not heeded, it may result in serious injury or possibly

even death.

- - SAVE THESE INSTRUCTIONS - -

Introduction

This manual is provided by W MH Tool Group cov ering the safe oper ation and mai ntenance procedure s for a JET Model 22-44 Plus Drum Sander. This manual contains instructions on installation, safety precautions, gener al oper ati ng procedur es, mai ntenance i nstructi ons and parts breakdo wn. Thi s mac hine has been designed and con structed t o provide year s of troubl e free operation if used in accordance wi th instructi ons set forth i n this manual . If there are any questions or comm ents, please contact either your local supplier or WMH Tool Group. WMH Tool Group can also be reached at our web site: www.wmhtoolgroup.com.

Specifications

Model Number..........................................................................................................................22-44 Plus

Stock Number..............................................................................................................................649003K

Maximu m Width (in.)......................................................................................................... 44 (two passes)

Minimum Lengt h (i n.) .........................................................................................................................2-1/4

Maximum Thickness (in.).........................................................................................................................4

Minimu m Thickness (in.).....................................................................................................................1/32

Drum Size (in.)................................................................................................ 5 x 22 Extrusion, Alum inum

Drum Speed (RPM) ........................................................................................................................... 1700

Dust Chute (in.) .......................................................................................................................................4

Conveyor Motor...................................................................................43 inch-lb. torque, direct drive D.C.

Conveyor Variable Feed Rate (FPM) .............................................................................0-10 (SandSmart)

Motor (TEFC)......................................................................................................1-3/4HP, 1Ph, 115V only

Net Weigh t (lb s.)..................................................................................................................................231

Shipping Weigh t (lbs.)..........................................................................................................................254

The above specifications were current at the time this manual was publi shed, but because of our policy of continuous im provement, WMH Tool Group reserv es the right to change specif ications at any tim e and without pri or notic e, without incurring obligations.

Features and Terminology

The illustrat ion below shows the major components and f eatures of the 22- 44 Plus Sander. These are referenced t hroughout t he manual and will help to familiarize you with the operation and f unctions of the machine.

Figure 1

Unpacking

Open shipping cont ainer and check f or shipping damage. Report any damage immediately to your distributor and shipping agent. Do not discard any shipping material until the Drum Sander is assembled and running properly.

Compare the cont ent s of y our cont ainer wit h the following parts list to make sure all parts are intact. Mi ssing parts, if any, should be reported to your distributor. Read the instruction manual thoroughly for assembly, maintenance and safety instructions.

Contents of the Shipp ing Container

Refer to Figure 2

Box 1:

1 Drum Sander 1 Handwheel 1 TUF Tool 1 Abrasive Strip (already i nstalled on drum) 1 Owner’s Manual (not shown) 1 Warranty Car d (not shown) 1 Hardware Bag containing: 4 Socket Head Cap Screws, 5/16”-18x3/4” 4 Lock Washers, 5/16” 4 Flat Washers, 5/16” 4 Hex Cap Screws, 3/8”-16x 3/4” 4 Flat Washers, 3/8” 3 Hex Wrenches, 1/8”, 4mm and 6mm (not

shown)

Box 2:

1 Conveyor Assembly

Read and understand the

entire contents of this manual before attempting set-up or operation. Failure to comply may cause serious inj ury.

Figure 2

Assembling the Open Stand (Op tional Accessory)

(Refer to Figure 3. If fur ther clarification is needed, c onsult the parts breakdown on page 35.)

Tools required for Stand assembly: Ratchet wrench with 1/2” socket

1. Assembl e legs (H) to outside of Short Rails (L) using carr iage bolts (N) and flanged lock nuts (O).

Finger tighten only .

2. Assem ble Long Rail (K) on inside of legs and on top of Short Rails (L). Finger t ighten only. NOT E:

Flange of Long Rail (K) overlaps flange of Short Rail (L). See Detail 1 below.

3. Turn stand upside down. Inst all shelf (J) into legs (H) using carriage bolts and lock nuts.

4. Fully tighten all flanged lock nuts in shelf and legs.

5. If you ar e using the provi ded leveling f oot (M), pl ace it in bot tom hole of leg by pl acing a hex nut (P)

and flat washer (R) ab ove and bel ow the leg fl ange. If you are mounti ng the optional casters, see “Casters” below.

6. Tur n stand ri ght- side up, and lev el it using the lev eling f eet. Tighten t he leveli ng feet hex nuts agai nst

the leg flange.

Casters (Optional Accessory)

1. If you are installing the optional casters, pres s down on the tab to lock the caster, then remove the

hex nut and washer with a 19m m wrench. Install t he caster through t he hole in the stand l eg and secure it with the washer and hex nut. See Detail 2 below.

2. Press down with your foot on the large tab to lock a caster; press down on the small tab t o unl oc k it.

Figure 3

Assembly

Tools required for assembly:

1 Flat head screwdriver 1 Set of open-end wrenches 1 Set of Hex wrenches 1 Adjustable wrench

Installing Drum Head

The drum sander must be bolted down to a workbench or stand. If you pur c hased o ne of the JET stands, plac e the sander b ase on t he stand and align the holes. Secure the sander to the stand using f our 3/8” x 3/ 4” hex cap screws and four 3/8” fl at washers. See F igure 4.

Attach the handwheel ( A, Fi gure 6) t o the hei ght adjustment screw, and tighten the two set screws with the 4mm hex wrench suppli ed.

Installing Conveyor Table

1. Rai se the drum as f ar as it will go by t urni ng

the handwheel (A, Fi gur e 5) cl oc k wise.

2. Align t he four holes in the convey or with the

four holes in the base of t he dr um assembl y .

3. Secure the conveyor in place with four

5/16”-18 x 3/4” sock et head cap screws (B, Figure 5), f our 5/16” lock washers and four 5/16” flat washers.

4. Plug the motor cord into the control box

receptacle.

IMPORTANT: The conveyor belt has been over- tensioned for the purpose of shipping. Before

operating the sander, adjust the belt tension according to i nstr uc tions on page 15.

Infeed and Outfeed Tables (Optional Accessory)

1. Bolt the base bracket (B, Figure 6) to the

sander base with two 3/ 8”-16 x 1” hex head cap screws (C) and two 3/8” flat washers (D). Tighten the screws.

Figure 4

Figure 5

2. Mount the table (A) to the base bracket (B)

with four 1/4"-20 x 3/4" carriage bolts (E), four 1/4" fl at washers (F) and four 1/4" hex nuts (G). Note: Leave the carriage bolts loose for now.

3. Plac e a straight edge on the conv eyor bed

and extendi ng out over the extension table. Raise or lower the extensi on table until it is level with, or slightly below, the surface of the conveyor belt. Tighten the hex nuts (G).

4. Repeat for the other table.

Figure 6

Dust Cover

To open the dust cover, push in on the k nob (C, Figure 5) and lift. The latch can be adjusted using the screw behind it.

Dust Collection

Dust collection is mandatory for a safe work environment and extended abrasive life. The 2244 Plus is equipped with a 4” du st c ollection por t at the top of the dust cov er . It is designed t o be used with standard 4” dust collection hose connected to a high volume dust collector (minimum 500 CFM), as shown in Fi gur e 7.

WMH Tool Group offers a variety of Dust Collectors and Ai r Filtration Unit s. Contact your local distributor for more information.

Installing Abrasives

An 80-grit abrasive strip is already installed on the drum of your sander. Page 23 offers information on other abrasives available and their recommended uses.

Proper attachment of the abrasive strip to the drum is critical to achieving top performance from your drum sander. Abrasive strips do not have to be pre-m easured. The end of t he roll is first taper ed and attached to the left (out board) side of the drum. Then the strip is wrapped around the drum, and the second taper i s made for attachm ent to the right (inboard) side of the drum.

NOTE: When using Ready To Wrap abrasives, not all of the steps below are necessary. You can use the original abrasive strip mounted to the drum as a template for cutting your own stri ps.

Figure 7

Figure 8

(not applicable to “Ready - To-Wrap” strips)

1. Mar k and cut a taper at one end of t he roll

as shown in Figur e 8. Because the tapered end should use al l of the l eft (outboar d) slot width, its end must be trimmed back as shown.

2. Rai se the fastener lev er (D, Figur e 9) on t he

outboard end of drum, and insert the tapered end of the abrasiv e (E, Figure 9) so that it uses most of the width of the slot. Release the fastener lever to securely hold the strip end to the fastener.

3. Begin wrapping the strip around the drum.

The tapered edge of the strip end should follow the edge of the dr um.

4. Continue to wrap the abrasive in a spiral

fashion by rotati ng the drum with one hand and guiding the strip with the other (Figure

10).

Figure 9

Figure 10

Successive windings of the strip should be flush with previous windings without any overlap.

5. Mark the trailing end of the strip where it

crosses the ri ght (inboard) end of the drum (Figure 11).

6. Remove the abrasive strip from the drum,

and cut a taper as was done with the starting edge (see Figure 8). Note: The taper on the rem aining roll can be used as the taper for the starting edge of the next strip to be cut.

7. Rewrap the drum beginning at the left, as

described in steps 2-4 .

8. You can use your f i ngers to work the i nfeed

take-up fastener, but it will be more convenient to use the TUFTool supplied with your sander. Hol d the T UFT ool with t he red end pointi ng away from y ou (Figure 12) and insert its hook into the outside hole of the fastener lever (see Figure 14).

9. Lift the lever with the TUFTool, pulling the

lever up until it touches the inside of the drum.

Figure 11

10. Turn the TUFTool counterclockwise and

lower it ont o the abrasiv e strip, making sure it is holding t he paper tight (Figure 13).

11. Insert the t apered end of the abrasiv e strip

into the slot and fastener. It may be necessary to trim the tapered end of the abrasive strip so that it does not “bottom out” against the i nsi de of the drum.

IMPORTANT: Leav e a gap – at least 1/ 8” – between the tapered strip and the closed end of the slot (Figure 13) to allow strip to be pulled into the fastener as needed. If necessary, trim the outside edge of the abrasive strip.

12. Hold the abrasive in place with your left

hand, lift up the TUFTool and turn it clockwise while maintaining upward pressure. Slowly move the TUFTool away from you slightl y, then down, while easing it out of the hole. This rel eases the lever i n its proper positi on (Figure 14).

All abrasive strips will stretch in use and may stretch enough to allow the take-up lever to reach its lowest position so that it can not maintain tension on the strip. If this occurs, follow the abov e procedures to re-set the takeup lever.

Figure 12

Figure 13

Always remove TUFTool from machine before operating.

Figure 14

Grounding Instructions

Electrical connections must

be made by a qualified electrician in compliance with all relevant codes. This machine must be properly grounded to help prevent electrical shock and possible fatal injury.

In the event of a malfunction or breakdown, grounding provi des a path of least r esistance f or electric current to reduce the risk of electric shock. This tool is equipped with an electric cord having an equipment-grounding conductor and a grounding plug. The plug must be insert ed into a matching outlet that is properly installed and grounded in accordanc e wit h al l loc al codes and ordinances.

Do not modify the plug provided. If it will not fi t the outlet, hav e the proper outlet installed by a qualified elec trician.

Improper connection of the equipmentgrounding conductor can result in a risk of electric shock. The conductor, with insulation having an outer surface that is green with or without yellow stripes, is the equipmentgrounding conductor . If repai r or replac ement of the electric cord or plug is necessary, do not connect the equi pment-grounding conduc tor to a live terminal.

Check with a qualified electrician or service personnel if the grounding instructions are not completely understood, or if in doubt as to whether the tool i s properly grounded. Us e only three wire extensi on c or ds that have three-prong grounding plugs and three- pole recept acles that accept the tool’s plug.

Repair or replace a damaged or worn cord immediately.

As received from t he factory, your drum sander is intended for use on a 20 am p, 110V dedicated circuit, whic h has an outlet and a plug that l ook like the ones illustrated in Figure 15. A temporary adapt er, which looks li ke the adapter illustrat ed in Figur e 16, may be used to connect this plug to a t wo-pole recept acle, as shown in Figure 16, if a properly grounded outlet is not available.

The temporary adapter should only be used unt il a properly grounded out let c an be installed by a qualified electrician. This adapter is not applicable in Canada. The green colored rigid ear, lug, or tab, extending from the adapter, must be connected t o a perm anent ground such as a properly grounded outl et box, as shown in Figure 16.

Figure 15

Figure 16

Extens ion Cords

If an extension cord is necessary, make sure the cord rating i s suitable for the am perage listed on the machine's motor plate. An undersize cord will cause a drop in line voltage resulting in loss of power and overheating.

The chart in Figure 17 shows the correct size cord to use based on cord length and motor plate amp rating. If in doubt, use the next heavier gauge. T he smaller the gauge num ber, the heavier the cor d.

Recommended Gauges (AWG) of Extension Cords

Extension Cord Length *

100

150

Amps

< 5 16 16 16 14 12 12

5 to 8 16 16 14 12 10 NR

8 to 12 14 14 12 10 NR NR 12 to 15 12 12 10 10 NR NR 15 to 20 10 10 10 NR NR NR

feet

200 feet

Adjustments

Drum Height Control

Drum height is controlled by the height adjustment handwheel. Rotating the hand wheel counterclockwise lowers the drum; clockwise raises it.

One revolution of the handwheel moves the drum approxim ately 1/16”.

Switch Lockout

Unauthorized use of the sander can be prevented by pulling out the key (Figure 18). Press switch to OFF position before removing the key. When the k ey is removed, the drum can not be started. (Note, however, that the conveyor belt can still run when the key is removed).

To replace the key , slide it back into the switch until it snaps.

Depth Gauge

The depth gauge indicates the distance between the bottom of the sanding drum and the top of the conveyor surface. Adjustment is performed by “zeroing” the gauge.

21 to 30 10 NR NR NR NR NR

*based on limit ing t he li ne vol tag e drop t o 5V at 150 % of th e rated amp eres.

NR: Not Recommended.

Figure 17

Figure 18

1. Loosen screw (A, Figure 19) sufficiently to allow the pointer (B) to be turned to depth gauge scale.

2. With an abrasive strip on the drum, lower sanding drum to where it touches top of conveyor belt.

3. At this drum position, the depth gauge pointer (B) should ali gn with the zero mark of the scal e. If it does not, loosen scre w (A) and raise or lower poi nter to ali gn with zero on the scale.

4. Re-tighten scr ew (A).

Note: Depending on t he desired accuracy, you may need to repeat thi s process when i nstalling different abrasive grits.

Figure 19

Conveyor Belt Tension and Tracking

Conveyor belt tension adjustment may be necessary during the break-in period to compensate for belt stretching.

IMPORTANT: The conveyor belt has been over- tensioned for the purpose of shipping. Before

operating the sander, adjust the belt tension according to the following instructions!

Tension. To adjust the t ension of the conveyor belt, fi rst adj ust the t ake-up screw nut (A , F igur e

20) using the attached wrench (B, Figure 20).

Do this on both side s of the conveyor to obtain approxim ately equal tension on both sides of the belt when taut. Insufficient belt tension will cause slippage of conveyor belt on the drive roller during sanding operation; the conveyor belt is too loose if it can be stopped by hand pressure applied directly to the top of the conveyor belt . Excessive belt tension can result in bent roll ers, bent brackets, and/or premature wearing of the bushings or bel t.

Tracking. Belt tracking adjustments are made while the conveyor belt is running. After the proper belt t ension i s obt ained ( see above), t urn the conveyor on and set it at the f astest speed setting. Watch for a tendency of the conveyor belt to drift to one side of the conveyor. To adjust track ing, tight en the t ake-up scre w nut on the side toward which the belt is drifting, and loosen the take-up screw nut on the opposite side an equal amount.

Adjusting t he take-up screw nuts on ei ther side of the conveyor all ows belt tracking adj ustments to be made without aff ecting belt tension.

NOTE: Adjust t ake-up screw nuts only 1/ 4 turn at a time. T hen all ow time f or t he belt t o react to the adjustments before proceeding further. Try to avoid over adj ustm ents.

Trackers

he sander comes equipped with “Trackers”, ceramic guides that reduce the amount of adjustments needed to keep the conveyor belt tracked (cent ered) on the conveyor bed. These guides have a magnetic backing to keep them in place. If a Tracker wears through, it can be reversed by turning it over. Page 22 contains more informati on about re-setting trackers.

Conveyor Belt Replacement

1. Unplug the machine from the wall

receptacle, and unpl ug the motor cord from the control box receptacle.

2. Rai se drum to its highest position using t he

handwheel.

Figure 20

3. Loosen t he conveyor tak e-up screw nuts (A,

Figure 20) t o relieve belt tensi on, and slide the driven roller fully inward.

4. Remove the four bolts that attach the

conveyor table to the base. Lift up the conveyor t abl e and rem ove i t f rom m achine. Avoid tearing the belt on any edges underneath the conveyor bed.

5. Install new belt, and re-install conveyor

table. Take care not to damage the Trackers. T ensi on and trac k the new belt .

NOTE: If the conv eyor belt continually tracks to one side of the machine, reversing the belt on the conveyor bed may remedy the probl em. To make sure the conveyor bed is not twisted, place a level on the conveyor bed. Level the machine if needed. If there is still a problem, proceed with the steps below:

Step 1: Check the conveyor drive roller and t he driven roll er to make sure they are parallel to the surface of the conveyor bed. To do this, first center the conv ey or belt on the be d. Then l ay a straight-edge on the exposed edge of the conveyor bed on the left (outboard) side, extending it over the roller. Note the distance between the roller and the str aightedge.

Step 2: Now repeat St ep 1 on the right (inboard) side of conveyor. Compare the measurements from side to side. If they are not equal, loosen one of the brac kets that hold the roll er in place. Tip this bracket until the distance between the roller and the straight-edge are equal f rom side to side, then tight en the bracket.

Checking Drum Alignment

The sanding drum must be aligned parallel to the conveyor bed for proper machine operati on. The sanding drum comes preset from the factory. If a problem with the drum alignment occurs, follow the instructions below.

First inspect the alignment with a gauge of some kind. The following procedure uses a steel straight edge as a gauge.

1. Unplug sander fr om power source.

2. Open the dust cover and remove the

abrasive strip from the drum.

3. Insert the gauge between the drum and

conveyor bed at the outer end of t he drum (Figure 21) . W ith the dust cover open, l ower sanding drum whil e slowly rotating drum by hand until the drum lightly contacts the thickness gauge.

4. Remove thickness gauge and place under

drum at the other end.

Figure 21

5. If the drum does not contact the thickness

gauge to the same degree as the oppo site end of the drum, ali gnm ent is necessary.

To align the drum:

1. Loosen t he four 3/8” hex cap screws – t wo

front, two rear (A, Fi gur e 22) . T his allows the entire drum carriage and shroud to be pivoted on two scre ws – one screw in front, one in back.

2. Lay the thickness gauge under the drum

lengthwise. See Figure 23. Rotate the fine tune adjustment knob (B, Figure 22) until the drum contacts the gauge equally along its entir e surf ace. Rotat e the k nob cl ockwise to raise the outboard end of the drum, countercloc kwise to lower the outboard end of the drum. Use the height adjustment handwheel to raise or lower the entire drum.

3. When drum is parallel to conveyor, tighten

the four screws (A, Figure 22).

Fine Tuning Drum Alignment

Figure 22

(conveyor table r em ov ed for clarity)

NOTE: This is an operati onal test. Perform this alignment after you have become familiar with sander operati on.

When sanding boards wider than the drum, drum alignment is critical and must be adjusted exactly level to slightly higher on the outboard end. This will prevent any ridges from developing i n the stock. Always chec k this on a piece of scrap wood, as f ollows, before sanding the work piece.

1. Run a pi ece of scr ap wood approx im ately 6”

wide by 30” to 40” long through t he sander sideways so that the end of the board extends past the end of the dr um .

2. Without changing drum height, rotate the

board 180° and sand the same side.

3. If a ridge is vi sibl e where the drum ov erlaps,

loosen the four screws (A, Figure 22) and raise the outboard end of the drum by turning the fine tune adjustment knob (B, Figure 22) sli ghtly clockwise.

Important: O nly turn fine tune adj ustment knob when all four screws (A, Figur e 22) ar e loose.

4. Repeat this process until the ridge is

eliminat ed and the entire board is sanded.

5. Tighten the four screws (A, Figure 23).

Figure 23

NOTE: Keep track of how many revolutions of the fine tune knob are needed t o change drum alignment for wider (over 22”) sanding. When sanding narrow stock (l ess than 22”) loosen the four screws (Figure 22) and turn fine tune adjustment knob counterclockwise the same amount as the i nitial wide sandi ng so that drum is again parall el.

Tension Roller Alignment

The infeed and out feed roll ers are tensioned to provide downward pres sure on the workpiece to prevent sli ppage on the feed conveyor. Tension rollers are set at the factory, but should be inspected and may require adjustment as the sander receives use.

Improperly adjusted tension

rollers (i.e. those set too high, rendering them non-functional) could allow kick-back of pieces being sanded.

1. Unplug sander from power source and

remove abrasive (D, Figure 24) from drum.

2. Loosen all f our hex nuts on the bearing bolt s

(E, Figure 24). This will allow both tension rollers to drop to their lowest position. (NOTE: Figur e 24 only shows outboard end of drum. Adjustments must be made on both ends of drum.)

3. Lower sanding drum to where it just

contacts the conv eyor bed. Then raise the sanding drum by making 3/4 turn of the height adjustment handle.

4. Tighten the four hex nuts (E, Figure 24).

Both tension rollers are now positioned about 1/16” below the bot tom of t he sanding drum.

Figure 24

Tension Roller Pressure Adjustment

You can increase or decrease tension roller pressure by turning the screws on the tension roller brack ets (Figure 25).

Too much tension r oller pressure can result in a “snipe” mar k, which i s identifi ed as a visi ble li ne running across the width of the board and located approximately 2-1/4” f rom the end of t he board.

If the snipe occurs on the leading end of the board, adjust the outfeed tension roller. If the snipe occurs on the trailing end of the board, adjust the infeed t ension roller.

Tension roller pressure can also be adjusted by raising the height of the rollers, as follows:

Figure 25

1. Repeat “Tension Roller Alignment” except

raise the sandi ng drum only 1/4 turn of the height adjustment handle.

2. If both tension r oll ers are causing snipe t hen

tighten all four hex nuts (E, Figure 24) at this position.

3. If only outfeed tension roller causes snipe,

only ti ghten rear (outf eed) hex nuts on each end of drum at this position, then raise sanding drum anot her 3/4 turn of the handle.

4. Press infeed tension roll er down to rest on

conveyor bed and ti ghten front (infeed) hex nuts at this positi on.

This process sets the t ension roller assembl y at an angle provi ding less ten sion pressure on t he outfeed roller .

Drum Height Control Adjustment

If the height control mechanism does not operate easil y or smoot hly, or ther e is ex cessiv e vertical movement or deflection of the drum carriage, perform the following adjustments.

1. Tighten all f our lock nuts (A, Figure 26) and

then loosen them 1/8 to 1/ 4 turn. If the lock nuts are set too ti ght, height contr ol will not operate easily . If the l ock nuts are too l oose, excessiv e def lection of the outboard end of the drum carriage will r esul t.

2. Thoroughl y lubricate the mating surfaces of

the motor mount slide (B, Figure 26), and the height adjustm ent screw (C, Figure 26).

Basic Operating Procedure

1. Set depth of cut.

2. Start dust collection system.

3. Start drum.

4. Start conveyor and select feed rate.

5. Feed stock through m ac hine. To feed stock through t he sander, rest and hold

the board to be sanded on the conveyor belt, allowing t he c onveyor belt to carry the board into the drum. Once the stock is halfway through, reposition yourself to the outfeed side of the machine to receive and control the board as it exits.

Setting Depth of Cut

Adjusting the drum sander f or the proper cont ac t between the abrasiv e and the stock determ ines the depth of cut. The depth of cut is controlled by the height adjustment handwheel.

It may take some ex perimentation t o determine the proper depth of cut, given the variables of abrasive grit, type of wood, and feed rate. For best results, use scrap wood t o pract i ce sanding and to develop skill and familiarity with the machine befor e doing finish work.

A combination of several variables will determine the proper depth of cut to use, including t he following:

1. Abrasive type and gri t size.

2. Width of the piece being processed.

3. Hardness of the piec e.

4. Feed rate of the conv ey or belt.

Figure 26

Operation

Before using your drum sander, review the previous pages in this manual on initial set-up and adjustment. In this section, you will learn how to operate the machine. Make sure an abrasive strip is mounted and a proper dust collection system is connected.

Establishing Proper D rum Height

A good rule of thumb when sanding with grits finer than 80 i s to place the stock to be sanded under the drum and lower drum until it contacts the stock. Drum should still rotate by hand. Without changing drum height, f inish feedi ng the stock under the sander.

Start sanding drum and sand the stock at that same positi on.

Do not start drum while in

contact with stock!

For sanding with gri ts coarser than 80, you can raise the conveyor table slightly.

Always maintain control of stock. Through practice you will learn the proper depth of cut considering t he v ari ables above.

Selecting SandSmart™ Feed Rates

A faster feed rate allows faster sanding but fewer revolutions of the drum per inch of sanding. A slower feed rate provides more revolutions of the drum per inch of sanding to allow a greater depth of cut and smooth sanding.

Begin experimenting with the feed rate set at about 40% to 50% of maximum. The best f eed rate will depend on a number of factors, including type of stock, grit and depth of cut used, and whether the stock is fed directly in li ne with the conveyor bed or at an angle. If the drum motor is lugging down, if the conveyor belt is slipping, or if you observe a ripple eff ect on the stock, slow down the feed rate. If the finish is smooth and the machine is not overworki ng, you can experiment using a faster feed rate.

The SandSmart control continuously monitors the load on the drum motor, and automatically regulates the speed of the conveyor motor to maintain the hi ghest feed rate without overload. If the load on the drum motor increases, the SandSmart control will decrease the conveyor feed rate and will stop the conveyor under extreme conditions. If the load on the drum decreases, SandSmart will increase the feed rate but will not increase it faster than the manual setti ng on the speed adj ustment label.

decreasing the depth of cut and run the stock through again.

Also try a faster feed rate or less depth of cut if the stock you are work ing begins to show burn marks. With cherry, hard maple or other hardwoods, using a shallower dept h of cut and a faster feed rate will help minimize burn marks. Slightly angling the stock as it is fed into the machine will al so hel p pr ev ent burning the stock.

Because of the wide range of variables, it is important to experiment with your specific conditions and m ak e adjustm ent s to achi ev e the optimum feed rate. If problems occur, first check and adjust the feed rate, referring to the “Troubleshooting” sections in this m anual.

Tips for Maximum Performance

The versatili t y designed i nto t he 22-44 Pro dr um sander allows it to be used for a wide v ariety of tasks that will boost the return on your investment. For example, its capabilities range from taking the place of a planer to thickness rough stock, to speeding up fine sanding work often done with slower, dust-generating hand sanders.

Learning how to use its adjustments and controls will allow you to fine-tune the machine for maximum results. The best results come from experimenting with different abrasive grits and machine adj ustments to fit the job at hand. Following i s a list of useful tips which can hel p you improve performance of your sander.

Figure 27

The best and most consistent finish will be achieved if the convey or does not c hange speed during operation. When the red indicator li ght (B, Figure 27) c om es on, the SandSmart control has detected too great a depth of cut and/ or too fast a feed rate.

This change in conveyor speed may affect the finish surface. If the finish is affected, make another sanding pass without changing any settings. If the finish is still affected, make adjustments by slowing the conveyor and/or

Dust Collection

When connecti ng dust coll ect ors, remem ber that straight pi pe will not restrict airflow as much as flexible tubing. Y’s and elbows will restrict airflow less than T’s. Also, a hose sm aller than 2-1/2” diameter shoul d not be used.

Multi pl e- Piece Sanding Runs

When abrasiv e planing (or t hickness sanding) a run of sim ilar pieces that you want to h ave the same thickness, it is best to determine the thickness of the thinnest piece and process all pieces to that same thickness in one session. Be aware that the sander will remove cups and crowns in the workpiece; consider this when measuring and processing stock to the same thickness.

Sanding Multip le Pieces At Once

When sanding multiple pieces simultaneously, make sure to stagger (step) the pieces across the width of the conveyor belt. This provides better contact with the tension rollers. Try to process only multi ple pieces of similar thickness.

If there is a signif icant thickness difference, t he thinner pieces can slip on the conveyor belt if they do not contac t the t ension roll ers. Al so note that pieces thicker than 3/4” should be longer than the minimum normally recommended to prevent tipping of the stock.

Edge Sanding

When edge sanding, the sander will mimic the opposite edge of t he stock which is lyi ng on the conveyor belt . Bec ause of this, i t is im port ant f or the stock edge to have been ripped at the proper angle to the face before the sanding process. When edge sanding stock that is less than 3/4” wide or more t han 2” high, it is good procedure to stack and clamp several pieces together to prevent them from slipping or tipping on the conveyor belt.

Sanding Imperfect Stock

When sanding stock with a c up or crown, place the crown up. This will stabilize the stock to help prevent tipping or rocking during sanding. After the crown has been rem oved and t he top is fl at, turn the stock ov er and sand the opposit e side. To avoid personal inj ury, t ake speci al c are when sanding stock that is twisted, bowed, or otherwise v aries in thi ckness from end t o end. If possible, support such stock as it is being sanded to keep it from slipping or tipping. Use extra rol ler stands, hel p from another person, or hand pressure on the stock, to minimize potentially hazardous situations.

Face Frames and Raised Panel Doors

It is v ery important t o have the proper abrasive contact when doing this type of sanding. If the machine is set t o take an excessiv e depth of cut, the result can be a gouge or dip as the drum goes from sanding the rails at full width to sanding just a f ew inches of width on the sti les. To prevent this, make sure that when using abrasives finer than 80 grit the drum is in cont ac t with the wood but can still be spun by hand. If there is room , angli ng t he stock on t he conveyor belt can also help. Slowing the conveyor feed when coming to a rail in the stock can help prevent a di p or goug e. Thi s all ows the abra siv e to work the wider width with less effort, and to achieve better consistency of the finished surface.

Stock Feeding Angle

Some pieces, because of their dimensions, will need to be f ed into the machi ne at a 90° angle (perpendicular to the drum). However, even a slight offset angle of the stock will provide for more effective stock removal. The optimum feeding angle for stock removal is about 60°.

Angling the workpiece for stock removal provides other advantages, such a s les s l oadi ng of certai n areas of the drums due to glue lines or mineral streaks in the stock, m ore even wear of abrasive stri ps, potenti ally faster f eed rates, and lighter l oads on the m otor. Note that to get the best final finish, however, the stock should be fed through t he machine so it will be sanded in line wit h the grain of the wood on the fi nal one or two passes.

Maintenance

Before doing maintenance on

the machine, disco nnect it from the el ectri cal supply by pulling out the plug or switching off the main switch! Failure to compl y may cause serious injury.

Keeping the Machine Clean

For best results, make cleaning the sander a regular shop procedure. Allowing excess buildup of dust and debris can adversely affect performance through the loading of the abrasives, slippage on the conveyor table, and/or the accumulation of material inside the drums which can thr ow off the center of balance. Leave the dust col lector on when c leaning dust from the drums. Also brush the conveyor belt after cleaning operations. If not cleaned, the conveyor belt could allow stock to slip during sanding operations.

For best results, perform the following recommended pr oc edur es on a monthly basis:

• Lubricate conv eyor bushings and check for wear.

• Lubricate all movi ng parts, such as threaded rods, washers, and bu shings. (Bearings are pre-sealed and requir e no lubrication.)

• Clean sawdust from the abrasive strip and brush dust from t he conveyor belt.

• Blow dust from motors and switches. Blow dust from insi de of sanding dr um , which may cause vibration or offset the center of balance.

• Check all set screws for tightness on parts such as bearings, the conveyor, and couplings.

Tracker Kit (98-0080)

Trackers dramatically reduce tracking adjustments of conveyor belts. They are already installed on your sander. The following information is for re-setting or replacing your trackers, should that become necessary. Refer to Figure 28.

1. Di sconnect power to sand er, and di sconnect motor cord from contr ol box r ec eptacle.

2. Lower conveyor table as far as it will go.

3. Loosen the conv eyor take-up screw nuts to relieve conveyor belt tension and slide driven roll er fully inward. Slide c onveyor belt to one side of bed.

4. Remove the f our bolts holding t he conveyor table to the sander base.

5. Lift conveyor table and slide it out of the sander. Turn conveyor table upside down. Be careful not to damage t he conveyor belt.

6. On t he underside of the convey or bed, there are U-channels welded to the bed. The Tracker is positioned on the inside of the first U-c hannel on the infeed side of sander (the U-channel closest to the rubber covered drive roll er and gear m ot or). T he back of the Tracker is magnetized and will stick to the side wall of the convey or bed. Do not install Tracker if the edge of the conveyor belt is damaged or torn.

7. With the first Tracker installed, slide the conveyor belt into the bottom slot of the Tracker. Note: When install ed properl y, onl y the bottom lip of the Trac ker wi ll be visible. The top slot is to be used if the bottom slot wears out.

8. Install second Tracker opposite t he first. Use both Trackers unless the second one does not fit in conveyor or if conveyor belt is damaged.

9. Turn conveyor table right-side up and reposition it onto the sander. Re-attach the four mounting bolts and tighten. Caution: Be careful not to knock Tracker(s) out of conveyor bed when turning conveyor over.

10. Make sure all switches are off. Connect power to sander and plug i n m otor.

11. Tension the conveyor belt using take-up screw nuts. If both Trackers are i nstalled, it is very important to have equal tension on both sides of the conveyor belt. Tighten both sides of take-up screw nuts until equal tension is obtained.

12. To check tension, turn on conveyor full speed and place both hand s on conv eyor. If conveyor belt can be stopped, continue tensioning until conveyor belt cannot be stopped by both ha nds on the bel t whil e the conveyor is operat ing at full speed.

13. Make sure conveyor belt runs smoothly inside Tracker slot and that the magnet is holding the Tr ac k er in positi on.

14. Conti nue to watch tracking of conv eyor and adjust only if necessary, making sure to keep equal tension on conveyor belt at all times and not allowing conveyor belt to buckle under conv ey or bed.

Figure 28 (underside of c onv ey or s hown)

Abrasives

The abrasive material you choose will have a substantial effect on the performance of your sander. Vari ations i n paper type, weight, coat i ng and durability all contribute to achieving your desired finish.

JET Abrasives are available in Ready-To-

Wrap Ready-To-Cut pr e-marked box. Your JET dealer can recommend the best choice for your application.

Selecting Drum Abrasi ves

It is important to select the proper grit of abrasive for the type of sanding being perform ed to achieve maximum results. As with any sanding operation, first begin sanding with a coarser grit, depending upon the roughness of the stock or the am ount of stock to be rem oved. Then progressiv ely work toward finer grit s. The chart (Figur e 29) sho ws the general u ses f or t he various grits. JET offers abrasives in the ten different grits shown – consult the stock numbers on page 28 to order.

The amount of stock to be removed i s a major considerati on when choosing the grit grade with which to begin. Grits 24, 36, 50 and 60 are primarily designed for stock removal. Grits 24 and 36 will remove the most material in one pass, whether you are doing abrasive planing, cleaning up glued panels, or flattening stock. Grits from 100 through 220 are primarily finishing grits designed to remove the scratch pattern from the previous grit used. For best results, never skip more than one grit grade when progressing through a sandi ng s equenc e.

For fine work, such as furniture, try not to skip any grit grades during the sanding process.

pre-cut lengths or in the convenient

In general, premium quality abrasives will produce a better finish with a less noticeable scratch pattern.

NOTE: Grits that are too fine can sometimes burnish the wood and leave a glossy surface which will not accept stains evenly. This will vary by type of wood. Oak, for example, is susceptible to burnishing because of its open pores.

Cleaning Abrasive Strips

Regularly cl ean the abr asive stri ps on the drum s with commercially available cleaning sticks, following the manufacturer’s directions. When cleaning, also brush the stick crumbs from the drum while it is still rotating.

In some cases, build-ups resulting from burns can also be removed with Plexiglas held on edge over the rotating drum.

Always wear eye protection

while performing sandpaper cleaning, and take all precautions to avoid any contact of hands or clothing with the rotating drum.

Cloth-backed abrasives can be cleaned by soaking in pai nt thinner or mineral spirits for 20 minutes to 1 hour, then u sing a brus h to rem ov e any build-up. Dr y the abrasive strips completely before using. Any used solvents should be discarded in compliance with environmental regulati ons.

Increasing Abrasive Life

Abrasive life can be increased not only by cleaning, but by r em ov ing the abrasive strip from the drum and reversing it. To do this, remove the strip and use what was the trailing end as the starting end on the left (outboard) side of the drum. Rever sing the stri p will provi de a fresh set of cutting edges on the abrasive.

brasive Selection Guide

Grit Common Application

24........Abrasive planing, surfacing rough-sawn boards, max imum stock removal, glue removal.

36........Abrasive planing, surfacing rough-sawn boards, max imum stock removal, glue removal.

50........Surfacing and dimensioni ng boar ds, trueing warped boards

60........Surfacing and dimensioni ng boar ds, trueing warped boards.

80........Light dimensioning, rem oval of planer ripples.

100......Light surfacing, removal of planer ripples.

120......Light surfacing, minimal stock removal.

150......Finish sanding, minimal stock rem ov al.

180......Finish sanding only, not for stock removal.

220 ..... Finish sanding only, not for stock remov al .

Figure 29

Troubleshooting: Motor and Electrical Problems

Trouble Probable Cause Remedy

Check plug connections. Connect

Sander will not star t.

Drum motor overloads.

No incoming power.

Circuit fuse blown or breaker tripped. Repl ac e fuse or re-set breaker. Switch is malf unctioning. Replace switch. Inadequate cir cuit. Check electrical requirements. Feed rate too fast or depth of cut too

large.

main cord to power source, and motor cord into contr ol box r ec eptacle.

Reduce feed rate and/or depth of cut.

Loosen housing bolts, run motor, retighten bolt s.

Reduce depth of cut; use coarser grit; reduce feed rate.

Allow motor to cool and re-set overload butt on.

Connect sander to a dedic ated circuit. Have a certified electrician correct any shop wiring problem.

Use a shorter or heavi er gauge extension cord (see Figure 17).

Conveyor motor oscillates.

Drum motor or conveyor motor stalls.

Motor overload protector trips or shop wiring breaker trips.

Motor not properl y aligned.

Transfer r od coll ar is worn. Replace transfer rod collar. Drive roller is bent. Replace driv e roll er.

Excessive dept h of cut.

Improper convey or belt tension. Adjust tension ( see page 15). Excessive load on sanding dr um and

motor.

Too many tools on circuit.

Excessive length or inadequate size extension cord.

Troubleshooting: Mec hani cal Problems

Trouble Probable Cause Remedy

Conveyor belt does not move, or runs intermittently.

Conveyor belt slips on drive roller.

Board slips on conveyor belt.

Shaft coupling (#20, page 32) is loose or unattached.

Improper convey or belt tension. Adjust belt t ensi on.

Excessive dept h of cut or feed rate.

Tension roller s too high. Lower tension rol lers (see page 18). Excessive f eed r ate. Reduce feed rate. Dirty or worn conv ey or belt. Replace conv eyor belt. Abrasive improperly wrapped.

Align the shaft flats of the gear motor and the drive roller and tighten the shaft-coupling setscrews.

Reduce depth of cut; reduce feed rate.

Read “Installing Abrasives” on pages 11-12.

Trouble Probable Cause Remedy

Conveyor belt out of adjustment. Readjust conveyor belt; see page 15. Drive or driv en roll er needs adj usting. Readjust; see page 16.

Conveyor belt tr ac k s to one side, or osc illates from side t o side.

Abrasive strip is loose.

Abrasive loads up prematurely.

Table height adjustment works improperly.

Conveyor belt worn or defective.

Drive roller worn, bent, or varies in diameter si de to side.

Roller bushings elongat ed due to excessiv e wear.

Strip caught on insi de edge of slot, or on inboard side of dr um.

Strip not cut proper ly .

Excessive dept h of cut. Reduce depth of cut. Excessive f eed r ate. Reduce feed rate. Inadequate dust collection. Increase airfl ow at dust port. Inadequate abrasive. Use an open-coat abrasive.

Stock fed at 90° angle to drum.

Improper adj ustm ent of height control.

Replace conv eyor belt; see pages 15 and 16.

Replace driv e roller.

Replace bushings.

Re-adjust the strip end in the slot and/or trim the abrasive edge.

Re-cut and re-i nst all abr asive strip. See pages 11 and 12.

Angle stock 60° if possibl e to avoid resin line buil dup.

Readjust height control. See pages

19.

Knocking sound while running.

Bearing(s) out of alignment. Re-align beari ngs. Dust in drum. Remove material i nside drum. Set screws loose in pull ey or beari ng. Re-tighten set screws. Abrasive fastener on dr um loose

(without abrasive strip in place). Drum bearing(s) worn. Replace drum bearing(s).

Insert abrasive strip, or replace fastener.

Troubleshooting: Operational Problems

Trouble Probable Cause Remedy

Ripples in sanded surface.

(Non-uniformly spaced ripples).

Ripples in sanded surface.

(Uniforml y spaced ripples).

Sniping of wood (gouging near end of board).

Uneven feed rate. Check for these condit ions and refer

to previous Tr oubleshooting sections: Conveyor belt slips on drive roller. Board slips on conveyor belt. Conveyor gear motor stalls. Set screw loose on shaft coupler

between gear motor and c onv ey or . Conveyor bushings dry – lubricate.

Conveyor bushings worn – replace. Excessive f eed r ate. Reduce depth of cut and/or feed rate. Excessive dept h of cut. Reduce depth of cut and/or feed rate.

Loose bolts, or loose bearing and

pulley set screws – re-tighten. Sander vibration.

Tension roller s set too low. Re-set tension roller s. Stock not supported properly during

infeed or outfeed.

Dirty drum – clean insi de.

Drum out of balance – contac t your

dealer or WMH authori z ed service

center.

Support stock wit h r oller stand, tables

or benches.

Burning of wood.

Gouging of wood.

Conveyor drive r oll er or driven roller higher than conveyor belt surface.

Feed rate too slow. Increase feed r ate.

Excessive depth of c ut f or grit used.

Excess build-up on abrasive strips.

Abrasive is too fine. Replace with abrasive of coarser grit.

Abrasive stri ps are overlapped.

Drum out of alignment. Re-align drum. S ee pages 16 and 17.

Conveyor belt is loose.

Excessive dept h of cut. Reduce depth of cut. Wood slipping on conv ey or due to

lack of contact Abrasive is too fine. Replace with coar ser grit.

Re-adjust roller(s).

Reduce depth of cut or incr ease grit

coarseness.

Reduce depth of cut; cl ean str ips or

replace; angle stock when feeding.

Rewrap strip without overlap. See

pages 11 and 12.

Adjust conveyor belt tension. See

page 15.

Use alternate feeding procedure.

Trouble Probable Cause Remedy

Line or groove in stock.

Inconsistent feed rate.

Do not stop or change the feed rate

while feeding stock.

Unsanded ridge along length of piec e (sandpaper appears

Grit has been removed from backing.

Avoid this area of drum, or replace

abrasive strip.

clean).

Optional Accessories

609004 Open Stand with Shelf 609005 Closed Stand with Shelf and Casters 98-2202 Infeed/Outfeed Tables 98-0130 Casters (set of 4) for Open Stand 60-2000 Ready-To-Wrap 60-2024 Ready-To-Wrap 60-2036 Ready-To-Wrap 60-2060 Ready-To-Wrap 60-2080 Ready-To-Wrap 60-2100 Ready-To-Wrap 60-2120 Ready-To-Wrap 60-2150 Ready-To-Wrap 60-2180 Ready-To-Wrap 60-2220 Ready-To-Wrap 60-8024 Klingspore Blue Ready-To-Cut 60-8036 Klingspore Blue Ready-To-Cut 60-8050 Klingspore Blue Ready-To-Cut 60-8060 Klingspore Blue Ready-To-Cut 60-8080 Klingspore Blue Ready-To-Cut 60-8120 Klingspore Blue Ready-To-Cut 60-9036 Premium Ready-To-Cut 60-9060 Premium Ready-To-Cut 60-9080 Premium Ready-To-Cut 60-9100 Premium Ready-To-Cut 60-9120 Premium Ready-To-Cut 60-9150 Premium Ready-To-Cut 60-9180 Premium Ready-To-Cut 60-9220 Premium Ready-To-Cut

NOTE: Abrasive st ri ps are 3” wide, cloth backed, aluminum oxide, resi n bond, open coat.

Assortment Package (one eac h of 30, 80, and 120 gri t)

Abrasive Strip, 24 Grit (3 wraps)

Abrasive Strip, 36 Grit (3 wraps)

Abrasive Strip, 60 Grit (3 wraps)

Abrasive Strip, 80 Grit (3 wraps)

Abrasive Strip, 100 Grit (3 wraps)

Abrasive Strip, 120 Grit (3 wraps)

Abrasive Strip, 150 Grit (3 wraps)

Abrasive Strip, 180 Grit (3 wraps)

Abrasive Strip, 220 Grit (3 wraps)

Abrasive Strip, 24 Grit (10 wraps)

Abrasive Strip, 36 Grit (10 wraps)

Abrasive Strip, 50 Grit (14 wraps)

Abrasive Strip, 60 Grit (14 wraps)

Abrasive Strip, 80 Grit (14 wraps)

TM TM TM TM TM TM TM TM TM

Abrasive Strip, 120 Grit (14 wraps) Abrasive Strip, 36 Grit (10 wraps) Abrasive Strip, 60 Grit (14 wraps) Abrasive Strip, 80 Grit (14 wraps) Abrasive Strip, 100 Grit (14 wraps) Abrasive Strip, 120 Grit (14 wraps) Abrasive Strip, 150 Grit (14 wraps) Abrasive Strip, 180 Grit (14 wraps) Abrasive Strip, 220 Grit (14 wraps)

Replacement Parts

Replacement part s are li sted on the f ollowing page s. To order par ts or reac h our servi ce depar tment, call 1-800-274-6848 between 7:30 a.m. and 6:00 p.m. (CST), Monday through Friday. Having the Model Number and Serial Number of your machine available when you call will allow us to serve you qui c kl y and accurately.

Conveyor and Motor Assembly

Parts List: Conveyor and Motor Assembly

Index No. Part No. Description Size Qty

1............... 323759.................... Gear Motor........................................................ 90 Volt DC..................1

2............... 72-6014................... Strain Relief....................................................... ...................................1

3............... 72-5336................... Cord Set............................................................ 110-120V-75”..............1

4............... TS-0680031 ............ Flat Washe r....................................................... 5/16............................4

5............... 10-4010-08.............. Socket Head Cap S c rew.................................... #10-32x1/2” ................4

6............... 98-0080................... Tracker Kit......................................................... ...................................2

7............... 72-2250-01.............. Knob.................................................................. ...................................1

8............... 72-2250-02.............. Speed Adjusting Label....................................... ...................................1

9............... 40-4018................... Wiring Gu a r d..................................................... ...................................1

10.............72-2250...................SandSmart Contr ol ler ........................................ ...................................1

11.............40-4904...................Controller Housing Bracket................................ ................................... 1

12.............20-0777...................Pan Head Self-Tapping Screw...........................5/32x1/2”....................2

13.............72-2120...................Receptacle, 110-120Volt.................................... ...................................1

14.............TS-081D022............ Pan Head Machine Screw.................................. #10-32x1/2” ................1

15.............TS-073203..............Lock Was h e r, Inte rn al Tooth..............................#10.............................2

16.............TS-0560081............Hex Nut............................................................. #10-32........................2

17.............10-9002...................Slotted Hex Head Screw.................................... #10-32x1/2”................5

18.............10-3103...................Phillips Pan Head Screw.................................... #6-32x1/2...................2

19.............JSG96-135.............. ON/OFF Drum Switch........................................ ...................................1

20.............30-0122...................Shaft Coupler..................................................... ................................... 1

21.............10-4010-04..............Set Screw.......................................................... 1/4-20x1/4”.................2

22.............40-4903...................Controller Base Bracket..................................... ...................................1

23.............40-4022W............... Control Housing Base Cover.............................. ...................................1

24.............10-4004-12..............Hex Washer Head Bolt ......................................1/4-20x3/4”...............12

25.............20-1161-01..............Wave Washer.................................................... 1/4”.............................4

26.............11-1002-04..............Flat Washer....................................................... 1/4”.............................4

27.............41-0003...................Take Up-Sli de Bracket (includes #28) ................ ...................................2

28.............50-3105...................Oilite Bushing....................................................5/16”I.D......................4

29.............30-3010-10..............Driven Rol l er...................................................... ...................................1

30.............40-0260...................Wrench.............................................................. ...................................2

31.............12-2000-04..............Hex Nut............................................................. 1/4-20.........................2

32.............11-1000-04..............Lock Washe r , Inter n al Tooth..............................1/4”.............................2

33.............10-4007-24..............Slotted Round Head Screw................................ 1/4-20x1-3/4”..............2

34.............40-4004...................Take-Up Bracket Base....................................... ...................................2

35.............TS-0720081............Lock Washe r ......................................................5/16............................4

36.............30-3010-11..............Rubber Covered Drive Roller............................. ...................................1

37.............41-0005...................Drive Roller Support Bracket (includes #28)....... ................................... 1

38.............40-4010-01..............Conveyor Bed.................................................... ...................................1

39.............TS-0208041............Socket Head Cap Screw .................................... 5/16-18x3/4”...............4

40.............60-0322-P...............Belt Conveyor (Not Shown)................................ ...................................1

41.............72-2250-03..............Flat Washer....................................................... 5/16............................1

42.............72-2250-04..............Hex Nut............................................................. 5/16-24.......................1

43.............72-2250-05..............Slotted Set Screw.............................................. #8-36UNFx5/16”.........1

44.............72-6101...................Small Strain Relief............................................. ...................................1

Drum Head Assembly

Parts List: Drum Head Assembly

Index No. Part No. Description Size Qty

1............... 70-4102................... Motor, 1-3/4 HP, 110-120 Volt w/Cord................ ...................................1

1A.............70-4102MFC...........Motor Fan Cover................................................ ...................................1

2............... 72-6104................... Strain Relief....................................................... ...................................1

3............... 72-5345................... Cord, Motor To Control Box............................... ...................................1

4............... 30-9025................... Motor Mount Slide.............................................. ...................................1

5............... 30-9024................... Drum Carriage................................................... ...................................1

6............... TS-0060061 ............ Hex Cap Screw.................................................. 3/8-16x1-1/4”..............9

7............... TS-0680041 ............ Flat Washe r....................................................... 3/8”...........................11

8............... 30-9023................... Shroud............................................................... ...................................1

9............... 30-9026................... Stud...................................................................5/16-24x1-3/4”............4

10.............50-3090-01..............Oilite Wash e r..................................................... 5/16” I.D......................8

11.............TS-0209061............Socket Head Cap Screw .................................... 3/8-16x1-1/4”..............4

12.............12-2003-05..............Nylon Insert Lock Hex Nut ................................. 5/16-24.......................4

13.............30-9027...................Screw, Height Adjustment.................................. 5/8-18UNC.................1

14.............50-9000...................Thrust Bearing................................................... 51103.........................1

15.............30-9028...................Height Adj ustment Handw heel........................... ...................................1

16.............TS-0270051............Socket Set Screw .............................................. 5/16-18x1/2”...............2

17.............80-2324...................Nylon Flat Washer.............................................5/8”I.D........................1

18.............20-1180-02..............Locking Shaft Collar........................................... ...................................1

19.............10-4020-04..............Socket Head Set Screw (Collar)......................... 5/16-18x1/4”...............2

20.............94-1668...................Label, Height-Direction ...................................... ...................................1

21.............94-2270...................Label, Dept h Gauge........................................... 4”................................1

22.............20-0762-02..............Key.................................................................... 3/16 SQ x3/4” .............2

23.............50-2207...................Coupling............................................................ ...................................2

24.............10-4010-04..............Set Screw.......................................................... 1/4-20x1/4”.................4

25.............50-2209...................Coupling Spider ................................................. ...................................1

26.............80-3138...................Fine Tune Adjustment Knob............................... ...................................1

27.............TS-0060081............Hex Cap Screw..................................................3/8-16x1-3/4...............1

28.............20-3216...................Spring................................................................ ...................................1

29.............30-9022...................Conveyor Mounting Base................................... ...................................1

30.............20-0778...................Retaining Ring................................................... STW25.......................2

31.............40-3169...................Depth Gauge Pointer......................................... ................................... 1

32.............50-3089...................Drum Bearing....................................................NTN 6205...................2

33.............TS-0720091............Lock Washe r ......................................................3/8”.............................4

34.............10-1205...................Carriage Head Bolt............................................ 5/16-18x1”..................4

35.............11-0206...................Lock Wash e r......................................................5/16 ”...........................9

36.............12-2000-05..............Hex Nut............................................................. 5/16-18.......................5

37.............40-0304...................Tension Roller Bracket....................................... ...................................2

38.............40-0308-01..............Tension Roller Bracket - Right ........................... ...................................2

39.............40-0308-02..............Tension Roller Bracket - Left.............................. ...................................2

40.............80-1060...................Tension Roller Bracket Pad................................ ...................................2

41.............20-3211...................Tension Roller Spring........................................ ...................................4

42.............10-4008-16..............Phillips Fi llister Head Screw............................... #8-32x1”.....................4

43.............40-3166...................Dust Cover Catch.............................................. ...................................1

44.............50-3105...................Oilite Bushing....................................................5/16”I.D......................4

45.............30-3051-06..............Tension Roller................................................... ...................................2

46.............30-3002...................Sanding Drum.................................................... ...................................1

47.............21-1173...................Outboard Abrasive Fastener .............................. ...................................1

48.............21-1172...................Inboard Abrasive Fastener................................. ...................................1

49.............10-3003...................Phillips Flat Head Screw.................................... 6-32x3/8”....................2

50.............80-2003...................Dust Cover ........................................................ ...................................1

51.............80-3137...................Dust Cover Knob............................................... ...................................1

52.............40-3168...................Dust Cover Latch............................................... ...................................1

53.............80-3131...................Knob.................................................................. ...................................1

54.............2244PLUS-254........ Hinge Pin........................................................... #3x80 .........................2

55.............2244PLUS-255........ Pan Head Machine Screw.................................. 1/4-20x3/4”.................3

56.............11-1000-04..............Lock Washe r , Inter n al Tooth..............................1/4”.............................2

57.............12-2000-04..............Hex Nut............................................................. 1/4-20.........................2

58.............11-1002-04..............Flat Washer....................................................... 1/4..............................2

59.............12-9001...................Nylon Insert Lock Hex Nut................................. #6-32..........................2

60.............2244PLUS-260........ Hex Nut ............................................................. 3/8-16.........................1

61.............98-0060...................TufTool (not shown)........................................... ...................................1

Parts List: Open Stand – #609004 (Optional Accessory)

Index Part No. No. Description Size Qty.

1.......... 40-4040........................ Leg, Left ............................................................ ...................................2

2.......... 40-4041........................ Leg, Right (with TUF tool holder)........................ ...................................2

3.......... 2244PLUS-303............. Rail, Long.......................................................... ...................................2

4.......... 2244PLUS-304............. Rail, Short.......................................................... ...................................2

5.......... 2244PLUS-305............. Shelf.................................................................. ...................................1

6.......... 10-1206........................ Carriage Bolt...................................5/16-18x5/8”.................................24

7.......... 12-0207........................ Nut, Flanged Lock...................................... 5/16”.................................24

8.......... 20-0655........................ Le veling Fo o t..................................................... ...................................4

9.......... 12-0005........................ Hex Nut .................................................. 3/8”-16...................................8

10........11-9103........................Flat Washer.................................................. 3/8...................................8

Parts List: Closed Stand – #609005 (Optional Accessory)

Index No. Part No. Description Size Qty

1............... 2244PLUS-401........ Base.................................................................. ...................................1

2............... JSG96-302.............. Lock Nut............................................................ 3/8..............................4

3............... PJE-S05..................Wheel................................................................ ...................................4

4............... JSG96-304.............. Hex Head Screw................................................ 3/8-16x2-1/2...............4

5............... 2244PLUS-405........ Shaft.................................................................. ...................................1

6............... PJN-S04 ................. Eccentric Cam ................................................... ...................................2

7............... JSG96-307.............. Set Screw.......................................................... M6x10........................ 2

8............... JSG96-308.............. Spring................................................................ ...................................2

9............... JSG96-309.............. Roll Pin.............................................................. 4x16 ...........................2

10.............PJN-S02.................Foot Brake......................................................... ................................... 1

11.............JSG96-311.............. Lock Nut............................................................ M10x1.5 .....................1

12.............2244PLUS-412........ Door.................................................................. ...................................1

13.............JSG96-319.............. Latch................................................................. ...................................1

14.............JSG96-320.............. Screw................................................................M3x4..........................2

15.............JSG96-321.............. Door Pivot.......................................................... ...................................1

16.............JSG96-127.............. Screw................................................................1/4x3/8.......................2

17.............TS-0561011............Hex Nut............................................................. 1/4..............................2

Parts List: Infeed and Outfeed Tables – #98-2202 (Optional Accessory)

Index Part No. No. Description Size Qty.

1.......... 2244PLUS-501............. Table................................................................. ...................................2

2.......... 2244PLUS-502............. Base Bracket..................................................... ...................................2

3.......... TS-0060051 ................. Hex Cap Screw.................................................. 3/8”-16UNC x 1”..........4

4.......... TS-0680041 ................. Flat Washe r....................................................... 3/8”.............................4

5.......... 2244PLUS-505............. Carriage Bolt...................................................... 1/4"-20UNC x 3/4" ......8

6.......... TS-0680021 ................. Flat Washe r....................................................... 1/4".............................8

7.......... TS-0561011 ................. Hex Nut .............................................................1/4".............................8

Electrical Connections

WMH Tool Gr ou p

2420 Vantage Drive

Elgin, Illinois 60123

Phone: 800-274-6848

www.wmhtoolgroup.com

Jet Tools Drum Sander User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

WARRANTY AND SERVICE

Specifications

Features and Terminology

Unpacking

Assembling the Open Stand (Op tional Accessory)

Assembly

Installing Drum Head

Installing Conveyor Table

Infeed and Outfeed Tables (Optional Accessory)

Dust Cover

Dust Collection

Installing Abrasives

Grounding Instructions

Adjustments

Drum Height Control

Switch Lockout

Depth Gauge

Conveyor Belt Tension and Tracking

Trackers

Conveyor Belt Replacement

Checking Drum Alignment

Fine Tuning Drum Alignment

Tension Roller Alignment

Tension Roller Pressure Adjustment

Drum Height Control Adjustment

Operation

Maintenance

Tracker Kit (98-0080)

Abrasives

Troubleshooting: Motor and Electrical Problems

Troubleshooting: Operational Problems

Optional Accessories

Replacement Parts

Conveyor and Motor Assembly

Drum Head Assembly

Electrical Connections