This .pdf document is bookmarked Operating Instructions and Parts Manual Drum Sander Model 22-44 Pro-3 JET 427 New Sanford Road LaVergne, Tennessee 37086 Ph.: 800-274-6848 www.jettools.com Part No.
Warranty and Service JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday. Warranty Period The general warranty lasts for the time period specified in the literature included with your product or on the official JET branded website. • JET products carry a limited warranty which varies in duration based upon the product.
Table of Contents Warranty and Service .............................................................................................................................. 2 Table of Contents .................................................................................................................................... 3 Warning................................................................................................................................................... 4 Introduction .....................
Warning 1. Read and understand this entire manual before attempting assembly or operation. 2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with all of these warnings may cause serious injury. 3. Replace the warning labels if they become obscured or removed. 4. This sander is designed and intended for use by properly trained and experienced personnel only.
23. Stand to one side of the conveyor and make sure no one else is standing in line with the conveyor while feeding into the machine. Should a part slip while being fed, it may exit the machine at a high rate of speed and can cause injuries to anyone standing directly in front of the infeed. 24. Use the right tool at the correct speed and feed rate. Do not force a tool or attachment to do a job for which it was not designed. The right tool will do the job better and safer. 25.
Introduction This manual is provided by JET covering the safe operation and maintenance procedures for a JET Model 22-44 Pro-3 Drum Sander. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. This machine has been designed and constructed to provide consistent, long-term operation if used in accordance with instructions set forth in this manual.
Features and Terminology The illustration below shows the major components and features of the 22-44 Pro-3 Sander. These are referenced throughout the manual and will help to familiarize you with the operation and functions of the machine. Features Read and understand the entire contents of this manual before attempting set-up or operation! Failure to comply may cause serious injury.
Hardware Unpacking Note: The letter designators identifying parts on this page are used throughout this manual for reference convenience.
Assembly Tools required for assembly: Hoist, forklift, or one or more assistants Wrenches – 9/32”, 1/2” , 9/16” Hex wrenches – 4mm, 1/8” Install Stand Legs The sander is heavy; use caution when lifting. 1. Raise the sander from the floor using a forklift, hoist or an assistant. Place hoist straps through the carriage arm (see Features on page 7) or below the table mounting brackets. If using a forklift, place fork below the table mounting brackets (see Features on page 7). Referring to Figure 1: 2.
Handwheel Installation Mount the handwheel to the top of the height adjustment screw (Figure 4). Align one of the setscrews with the flat on the height adjustment screw, and tighten both set-screws. Install the knob to the threaded hole in the handwheel, and tighten the hex nut against the handwheel. Conveyor Table Installation 1. Lower the table mounting brackets by rotating the handwheel. Referring to Figure 5: 2. Place the conveyor table (O) on the mounting brackets of the stand.
7. The table (U) should be positioned even with or slightly below the conveyor belt surface. To check position, place a level or straightedge near the left side of the conveyor and extending out over the table, as shown in Figure 8. Raise the conveyor table until the drum holds the straightedge in place, and adjust the infeed table until it is even with or slightly below the conveyor belt surface. 8. Place the straightedge near the the right side of the conveyor table and repeat.
Installing Abrasives An 80-grit abrasive strip is already installed on the drum of your sander. Page 28 offers information on the types of abrasive 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 premeasured. The end of the roll is first tapered and attached to the left (outboard) side of the drum.
8. You can use your fingers to work the infeed take-up fastener, but it will be more convenient to use the TUFTool (Y, Fig. 13) supplied with your sander. Hold the TUFTool with the red end pointing away from you (Figure 13) and insert its hook into the outside hole of the fastener lever (see Figure 15). 9. Lift the lever with the TUFTool, pulling the lever up until it touches the inside of the drum. 10.
Grounding Instructions 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 undersized cord will cause a drop in line voltage resulting in loss of power and overheating. Figure 16 shows the correct size cord to use based on cord length and motor plate amp rating. If in doubt, use the next heavier gauge. The smaller the gauge number, the heavier the cord.
adjusting screw supports can be adjusted by loosening the set-screws which secure them to the columns, and rotating the supports to proper position. Adjustments Dust Cover 4. Check the miter gear alignment. The miter gears can be adjusted on their shafts by prying off their protective caps with a flat blade screwdriver, and loosening the set-screws on the gears. Check that the gear mesh is not too tight or too loose, and that the gear teeth align with the opposing gear.
Depth Gauge/Depth Stop Digital Scale Depth Guage The depth gauge (AA, Figure 18) measures the distance between the conveyor table and the sanding drum for thickness dimensioning of boards. Description The digital scale can be used to measure the distance between the conveyor table and the sanding drum (Absolute measurement) for thickness dimensioning of boards.
turn it off while in absolute (“ABS”) mode, your absolute setting will default to zero. When finished: 5. Press and hold the SET button until indicator “SET” flashes, MM/INCH Pressing this button toggles back and forth between standard (inches) and metric (mm), and can be done at any time without affecting saved settings. 6. Press SET again (no longer than 1 second). The indicator “SET” disappears and the value you just input is displayed on the LCD.
Drum Alignment The sanding drum must be aligned parallel to the conveyor table for proper machine operation. The sanding drum has been pre-aligned at the factory and should not require immediate adjustment, although it is recommended that you confirm the alignment before operating the sander. Proceed as follows: First inspect the alignment with a gauge of some kind. The following procedure uses a steel straightedge as a gauge. See Figure 20. 1. Unplug sander from power source. 2.
Fine-Tuning Drum Alignment The 22-44 Pro-3 is equipped with a drum adjuster mechanism that allows easy fine tuning or changing of drum alignment without repeating the intial drum alignment procedure. 1. Raise drum adjustment lever (Figure 23) so that it just engages the side of drum carriage leg. 2. Slightly loosen bearing bolt knobs. (An internal tooth lock washer is placed under the head of each bearing bolt to prevent tension rollers from dropping out of position if knobs are loosened slightly.
Trackers The sander comes equipped with “Trackers”, ceramic guides that reduce the amount of adjustments needed to keep the conveyor belt tracked (centered) on the conveyor bed (see Figure 26). These guides have a magnetic backing to keep them in place. If a Tracker wears through, it can be reversed by turning it over. The Tracker Kit section on page 27 contains more information about re-setting trackers. Figure 26 Conveyor Belt Replacement 1.
Adjusting Table Supports 1. If the conveyor table does not rise and lower easily, measure the distance between the top of the base column support and the bottom of the table support on both the inboard and the outboard side of the machine. See Figures 29 and 30. 2. Compare these measurements; they should be within 1/16”.
Rotating Drum Bearings Bearings should be replaced when they allow excessive play of the drum, make excessive noise or otherwise indicate failure. If clicking noises in the bearings are a problem, rotating may be a solution instead of replacement, as follows: 1. Unplug sander from power source. 2. Loosen the set-screws in the bearing collar (Figure 33). Leave the set-screw wrench in one of the set-screws. Then rotate the drum within the bearing and tighten the set-screws. 3.
10. 11. 12. 13. 14. the bolts go through the tension roller brackets and drum shield. Install the new inboard bearing. Center the drum between the carriage legs before tightening bolts. Tighten the bolts in the bearing and the set-screws in the bearing collar. Install the driven pulley (shown in Figure 35) making sure it aligns with the drive pulley on the motor. Tighten the set-screw. Install the outer half of the belt guard cover and tighten the six #10-32 screws.
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 dust collection system is connected. Do not start drum while in contact with stock! For sanding with grits 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 the variables above.
the width of the conveyor belt. This provides better contact with the tension rollers. Try to process only multiple pieces of similar thickness. If there is a significant thickness difference, the thinner pieces can slip on the conveyor 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 prevent tipping of the stock. has detected too great a depth of cut and/or too fast a feed rate.
Angling the workpiece for stock removal provides other advantages, such as less loading of certain areas of the drums due to glue lines or mineral streaks in the stock, more even wear of abrasive strips, potentially faster feed rates, and lighter loads on the motor. Note that to get the best final finish, however, the stock should be fed through the machine so it will be sanded in line with the grain of the wood on the final one or two passes.
Tracker Kit Stock No.: 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 38. 1. Disconnect power to sander, and disconnect motor cord from control box receptacle. 2. Lower conveyor table as far as it will go. 3. Loosen the conveyor take-up screw nuts to relieve conveyor belt tension and slide driven roller fully inward.
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. Abrasives The abrasive material you choose will have a substantial effect on the performance of your sander.
Troubleshooting Troubleshooting – Motor and Electrical Problems Trouble Probable Cause Remedy No incoming power. Check plug connections. Connect main cord to power source, and motor cord into control box receptacle. Circuit fuse blown or breaker tripped. Replace fuse or re-set breaker. Switch is malfunctioning. Replace switch. Inadequate circuit. Check electrical requirements. Feed rate too fast or depth of cut too large. Reduce feed rate and/or depth of cut. Motor not properly aligned.
Troubleshooting – Mechanical Problems Trouble Probable Cause Remedy Conveyor belt does not move, or runs intermittently. Shaft coupling (#11, page 38) is loose or unattached. Align the shaft flats of the gear motor and the drive roller and tighten the shaft-coupling setscrews. Conveyor belt slips on Improper conveyor belt tension. drive roller. Excessive depth of cut or feed rate. Board slips on conveyor belt. Conveyor belt tracks to one side, or oscillates from side to side.
Troubleshooting – Operational Problems Trouble Probable Cause Remedy Ripples in sanded surface. (Non-uniformly spaced ripples). Uneven feed rate. Ripples in sanded surface. (Uniformly spaced ripples). Excessive feed rate. Excessive depth of cut. Check for these conditions and refer to previous Troubleshooting sections: - Conveyor belt slips on drive roller. - Board slips on conveyor belt. - Conveyor gear motor stalls. - Excessive v-belt tension.
Optional Accessories 98-2201 98-0130 60-2036 60-2060 60-2080 60-2100 60-2120 60-2150 60-2180 60-2220 60-9036 60-9060 60-9080 60-9100 60-9120 60-9150 60-9180 60-9220 Infeed/Outfeed Tables Casters (set of 4) Ready-To-WrapTM Abrasive Strip, 36 Grit, (4 wraps in a box) Ready-To-WrapTM Abrasive Strip, 60 Grit, (4 wraps in a box) Ready-To-WrapTM Abrasive Strip, 80 Grit, (4 wraps in a box) Ready-To-WrapTM Abrasive Strip, 100 Grit, (4 wraps in a box) Ready-To-WrapTM Abrasive Strip, 120 Grit, (4 wraps in a box) Rea
Infeed and Outfeed Tables Index No. Part No. Description Size Qty 1............... 40-0329 ...................Infeed/Outfeed Table ................................... ......................................... 2 2L ............. 40-0327 ...................Mounting Bracket (LH) ................................. ......................................... 2 2R ............ 40-0328 ...................Mounting Bracket (RH) ................................ ......................................... 2 3..........
Stand Assembly Index No. Part No. Description Size Qty 1............... 31-0027 ...................Handwheel Assembly .................................. 8”O.D., 1/2” I.D. ................ 1 2............... TS-0270031 .............Socket Set-screw......................................... 5/16”-18x3/8” .................... 2 3............... BB-R8ZZ..................Bearing........................................................ ......................................... 4 4............... 80-4015 .......
Stand Assembly 35
Drum Head Assembly Index No. Part No. Description Size Qty 1............... 30-0002W ................Drum Carriage Arm ..................................... ......................................... 1 2............... 30-0015W ................Clamp Jaw .................................................. ......................................... 1 3............... TS-0561031 .............Hex Nut ....................................................... 3/8”-16 .............................. 1 4.............
Drum Head Assembly 37
Conveyor and Motor Assembly Index No. Part No. Description Size Qty 1............... 72-2250-01 ................. Knob ........................................................ ......................................... 1 2............... 2244PRO3-402 ........... Control Housing Bracket ........................... ......................................... 1 3............... 72-2250-05 ................. Set-screw Slotted ...................................... #8-36UNFx5/16”............... 1 4..............
Conveyor and Motor Assembly Index No. Part No. Description Size Qty 51 ............. 3735141...................... Spacer .................................................... ......................................... 1 52 ............. 72-2250-02 ................. Speed Adjustment Label........................... ......................................... 1 53 ............. 40-4018 ...................... Wiring Guard ............................................ .........................................
Electrical Schematic BLACK 4 T2 18 17 A1 WHITE 95 98 97 5L3 13 NO 96 6T3 14 NO 6T3 A2 1L2 3 L2 2T1 4 T2 WHITE 2T1 BLACK GROUND GREEN GREEN μ GREEN WHITE BLACK 40
