Jet Drum Sander - Manual

8 Unpacking Open shipping container and check for 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 contents of your container with the following parts list ...

9 Assembling the Open Stand (Optional Accessory) (Refer to Figure 3. If further clarification is needed, consult the parts breakdown on page 35.) Tools required for Stand assembly: Ratchet wrench with 1/2” socket 1. Assemble legs (H) to outside of Short Rails (L) using carriage bolts (N) and flanged...

10 Assembly Tools required for assembly: 1 Flat head screwdriv er 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 purchased one of the JET stands, place the sander base on the stand and alig...

13 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 provides a path of ...

14 Extension Cords If an extension cord is necessary, make sure the cord rating is suitable for the amperage listed on the machine's motor plate. An undersize cord will cause a drop in line v oltage resulting in loss of power and ov erheating. The chart in Figure 17 shows the correct size cord to us...

16 3. Loosen the conv eyor take-up screw nuts (A, Figure 20) to relieve belt tension, and slide the driven roller fully inward. 4. Remove the four bolts that attach the conv eyor table to the base. Lift up the conv eyor table and remove it from machine. Av oid tearing the belt on any edges underneat...

17 5. If the drum does not contact the thickness gauge to the same degree as the opposite end of the drum, alignment is necessary. To align the drum: 1. Loosen the four 3/8” hex cap screws – two front, two rear (A, Figure 22). This allows the entire drum carriage and shroud to be pivoted on two scre...

18 NOTE: Keep track of how many revolutions of the fine tune knob are needed to change drum alignment for wider (ov er 22”) sanding. W hen sanding narrow stock (less than 22”) loosen the four screws (Figure 22) and turn fine tune adjustment knob counterclockwise the same amount as the initial wide s...

19 1. Repeat “Tension Roller Alignment” except raise the sanding drum only 1/4 turn of the height adjustment handle. 2. If both tension rollers are causing snipe then tighten all four hex nuts (E, Figure 24) at this position. 3. If only outfeed tension roller causes snipe, only tighten rear (outfeed...

20 Selecting SandSmart™ Feed Rates A faster feed rate allows faster sanding but fewer rev olutions of the drum per inch of sanding. A slower feed rate provides more rev olutions of the drum per inch of sanding to allow a greater depth of cut and smooth sanding. Begin experimenting with the feed rate...

21 If there is a significant thickness difference, the thinner pieces can slip on the conv eyor belt if they do not contact the tension rollers. Also note that pieces thicker than 3/4” should be longer than the minimum normally recommended to prev ent tipping of the stock. Edge Sanding When edge san...

23 Abrasive Selection Guide Grit Common Application 24 ........ Abrasiv e planing, surfacing rough-sawn boards, maximum stock removal, glue removal. 36 ........ Abrasiv e planing, surfacing rough-sawn boards, maximum stock removal, glue removal. 50 ........ Surfacing and dimensioning boards, trueing...

26 Troubleshooting: Operational Problems Trouble Probable Cause Remedy Ripples in sanded surface. (Non-uniformly spaced ripples). Unev en feed rate. Check for these conditions and refer to previous Troubleshooting sections: Conv eyor belt slips on drive roller. Board slips on conv eyor belt. Conv ey...

27 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 piece (sandpaper appears clean). Grit has been remov ed from backing. Av oid this area of drum, or replace abrasiv e strip. Option...

29 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 ...............

31 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 Cov er......................................

36 Electrical Connections WMH Tool Group 2420 Vantage Drive Elgin, Illinois 60123 Phone: 800-274-6848 www.wmhtoolgroup.com