Jet JWDS-2550, JWDS-2244 User Manual

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Operating Instructions and Parts Manual

22” and 25” Open-End Drum Sanders

Models JWDS-2244, JWDS-2550

JET

Model JWDS-2550 shown with optional closed stand and optional infeed/outfeed tables

1.0 IMPORTANT SAFETY

INSTRUCTIONS

WARNING – To reduce risk of injury:

1. Read and understand the entire owner's 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 warning labels if they become obscured or removed.

4. This drum sander is designed and intended for use by properly trained and experienced personnel only. If you are not familiar with the proper and safe operation of a drum sander, do not use until proper training and knowledge have been obtained.

5. Do not use this drum sander for other than its intended use. If used for other purposes, JET disclaims any real or implied warranty and holds itself harmless from any injury that may result from that use.

6. Always wear ANSI Z87.1 approved safety glasses or face shield while using this drum sander. (Everyday eyeglasses only have impact resistant lenses; they are not safety glasses.)

7. Before operating this machine, remove tie, rings, watches and other jewelry, and roll sleeves up past the elbows. Do not wear loose clothing. Confine long hair. Non-slip footwear or anti-skid floor strips are recommended. Do not wear gloves.

8. Kickback occurs when the workpiece is thrown towards the operator at a high rate of speed. If you do not have a clear understanding of kickback and how it occurs, DO NOT operate this drum sander.

9. Wear hearing protection (plugs or muffs) during extended periods of operation.

10. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.

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

12. Make certain the machine is properly grounded.

13. Make all machine adjustments or maintenance with the machine unplugged from 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 after completion of maintenance.

16. Make sure the sander is firmly secured to the stand or work table 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 parts, binding of moving parts, breakage of parts, mounting and any other conditions that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced.

18. Provide for adequate space surrounding work area and non-glare, overhead lighting.

19. Keep the floor around the machine clean and free of scrap material, oil and grease.

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

21. Make your workshop child proof with padlocks, master switches or by removing starter keys.

22. Give your work undivided attention. Looking around, carrying on a conversation and “horseplay” are careless acts that can result in serious injury.

23. Maintain a balanced stance at all times so that you do not fall onto moving parts. Do not overreach or use excessive force to perform any machine operation.

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 more safely.

25. Use recommended accessories; improper accessories may be hazardous.

26. Maintain tools with care. Keep conveyor and abrasives clean for the best and safest performance. Follow instructions for lubricating and changing accessories.

27. Turn off the machine before cleaning. Use a brush or compressed air to remove chips or debris — do not use bare hands.

28. Do not stand on the machine. Serious injury could occur if the machine tips over.

29. Never leave the machine running unattended. Turn the power off and do not leave the machine until it comes to a complete stop.

30. Remove loose items and unnecessary work pieces from the area before starting the machine.

31. Stand out of the path of workpiece when feeding a board.

32. Always feed stock against the rotation of drum.

33. Keep hands clear when feeding parts onto the conveyor. The part will be forced down as it begins to feed, causing a pinching action between the part and the conveyor table. Never reach into a running machine. Turn off sander, allow it to come to a complete stop, and disconnect from power, before attempting to retrieve parts from beneath the drum.

34. Pay particular attention to instructions on reducing risk of kickback.

35. Don’t use in dangerous environment. Don’t use power tools in damp or wet location, or expose them to rain. Keep work area well lighted.

WARNING: This product can expose you to chemicals including lead which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to http://www.p65warnings.ca. gov.

WARNING: Drilling, sawing, sanding or machining wood products generates wood dust and other substances known to the State of California to cause cancer. Avoid inhaling dust generated from wood products or use a dust mask or other safeguards for personal protection.

Wood products emit chemicals known to the State of California to cause birth defects or other reproductive harm. For more information go to http://www.p65warnings.ca.gov/wood.

Familiarize yourself 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, or possibly even fatal,

injury.

2.0 About this manual

This manual is provided by JET, covering the safe operation and maintenance procedures for a JET Model JWDS-2244 and JWDS-2550 Drum Sander. This manual contains instructions on installation, safety precautions, general operating procedures, maintenance instructions and parts breakdown. Your machine has been designed and constructed to provide consistent, long-term operation if used in accordance with the instructions set forth in this document.

This manual is not intended to be an exhaustive guide to sanding methods, choice of stock, selection of abrasives, etc. Additional knowledge may be obtained from experienced users or trade articles. Whatever accepted methods are used, always make personal safety a priority.

If there are questions or comments, please contact your local supplier or JET. JET can also be reached at our web site: www.jettools.com.

Retain this manual for future reference. If the machine transfers ownership, the manual should accompany it.

Read and understand the entire contents of this manual before attempting assembly or

operation! Failure to comply may cause serious injury!

3.0 Table of contents

Section Page

1.0 IMPORTANT SAFETY INSTRUCTIONS ....................................................................................................... 2

2.0 About this manual .......................................................................................................................................... 3

3.0 Table of contents ............................................................................................................................................ 4

4.0 Specifications ................................................................................................................................................. 6

5.0 Features and Terminology ............................................................................................................................. 8

6.0 Setup and assembly ....................................................................................................................................... 9

6.1 Shipping contents ....................................................................................................................................... 9

6.2 Tools required for assembly ....................................................................................................................... 9

6.3 Assembling stand ..................................................................................................................................... 10

6.4 Mounting sander to stand ......................................................................................................................... 10

6.5 Handle and hose hanger .......................................................................................................................... 10

6.6 Folding infeed/outfeed tables (OPTIONAL) .............................................................................................. 10

6.7 Dust collection .......................................................................................................................................... 11

6.8 Installing abrasives ................................................................................................................................... 11

7.0 Electrical connections .................................................................................................................................. 12

7.1 GROUNDING INSTRUCTIONS ............................................................................................................... 12

7.2 Extension cords ........................................................................................................................................ 13

8.0 Adjustments ................................................................................................................................................. 13

8.1 Drum Height Control ................................................................................................................................. 13

8.2 Depth scale .............................................................................................................................................. 13

8.3 Depth stop assembly (OPTIONAL) .......................................................................................................... 13

8.4 Infeed/Outfeed Table Adjustment (OPTIONAL) ....................................................................................... 14

8.5 Conveyor belt tension/tracking ................................................................................................................. 14

8.6 Inspecting drum alignment ....................................................................................................................... 14

8.7 Tension roller adjustment ......................................................................................................................... 15

9.0 Operations .................................................................................................................................................... 16

9.1 Basic Operating Procedure ...................................................................................................................... 16

9.2 Switch safety key ...................................................................................................................................... 16

9.3 Setting depth of cut .................................................................................................................................. 16

9.4 Establishing drum height .......................................................................................................................... 16

9.5 Selecting SandSmart™ feed rates ........................................................................................................... 16

9.6 Maximum performance tips ...................................................................................................................... 17

10.0 User-maintenance ...................................................................................................................................... 18

10.1 Cleaning and lubrication ......................................................................................................................... 18

10.2 Drum maintenance ................................................................................................................................. 18

10.3 Conveyor belt replacement .................................................................................................................... 19

10.4 Commutator brush inspection ................................................................................................................ 19

10.5 Additional servicing ................................................................................................................................ 19

11.0 Tracker kit .................................................................................................................................................. 20

12.0 Abrasives ................................................................................................................................................... 21

12.1 Selecting drum abrasives ....................................................................................................................... 21

12.2 Cleaning abrasive strips ......................................................................................................................... 21

12.3 Increasing abrasive life ........................................................................................................................... 21

12.4 Abrasive selection guide ........................................................................................................................ 21

13.0 Troubleshooting JWDS-2244,-2550 Drum Sanders ................................................................................... 22

14.0 Optional accessories .................................................................................................................................. 24

15.0 Replacement Parts ..................................................................................................................................... 24

15.1.1 JWDS-2244/-2550 Head Assembly – Exploded View ......................................................................... 25

15.1.2 JWDS-2244 Head Assembly – Parts List ............................................................................................ 26

15.2.1 (OPTIONAL) Digital Readout for JWDS-2244/-2550 – Exploded View ............................................... 29

15.2.2 (OPTIONAL) Digital Readout for JWDS-2244/-2550 – Parts List ....................................................... 29

15.3.1 JWDS-2244/-2550 Conveyor Table Assembly – Exploded View ........................................................ 30

15.3.2 JWDS-2244 Conveyor Table Assembly – Parts List ........................................................................... 31

15.3.3 JWDS-2550 Conveyor Table Assembly – Parts List ........................................................................... 31

15.4.1 Open Stand Assembly for JWDS-2244/-2550 – Exploded View ......................................................... 32

15.4.2 723540OS Open Stand Assembly for JWDS-2244 – Parts List .......................................................... 33

15.4.3 (OPTIONAL) 723550OS Open Stand Assembly for JWDS-2550 – Parts List .................................... 33

15.5.1 (OPTIONAL) Infeed/Outfeed Tables for JWDS-2244/-2550 – Exploded View .................................... 34

15.5.2 (OPTIONAL) 723541 Infeed/Outfeed Tables for JWDS-2244 – Parts List .......................................... 35

15.5.3 (OPTIONAL) 723551 Infeed/Outfeed Tables for JWDS-2550 – Parts List .......................................... 35

15.6.1 Depth Stop Assembly for JWDS-2244/-2550 * – Exploded View ........................................................ 36

15.6.2 Depth Stop Assembly for JWDS-2244/-2550 * – Parts List ................................................................. 36

15.7.1 (OPTIONAL) Closed Stand Assembly for JWDS-2550 – Exploded View ........................................... 37

15.7.2 (OPTIONAL) Closed Stand Assembly for JWDS-2550 – Parts List .................................................... 37

16.0 Electrical Connections for JWDS-2244/-2550 ............................................................................................ 38

17.0 Warranty and service ................................................................................................................................. 39

4.0 Specifications

Table 1

Model number

Sander/conveyor 723540B 723550B

Stock numbers

Accessories (separate purchase unless indicated otherwise)

Motor and Electricals

Drum motor type TEFC induction

Horsepower 1-3/4 HP (1.3 kW) Phase 1 Voltage 115 V Cycle 60 Hz Listed FLA (full load amps) 15 A Motor speed 1725 RPM Starting amps 43 A Running amps (no load) 6.8 A Start capacitor 300MFD 125VAC

Run capacitor

Conveyor motor type totally enclosed DC

Horsepower 1/30 HP (25 W) Phase 1 Voltage 115 V Listed FLA (full load amps) 0.6 A

Motor speed 54 RPM On/off switch Toggle with safety key

Power transfer Direct drive

Power cable and plug SJT 12AWG x 3C 300V, 6 ft., 15A plug

Recommended circuit size 1 20 A

Sound emission 2

Capacities

Maximum board width (single pass) 22 in. (55.9 cm) 25 in. (63.5 cm) Maximum board width (two passes) 44 in. (111.76 cm) 50 in. (127 cm) Maximum board thickness 4 in. (102 mm) Minimum board length 3-2/8 in. (60 mm) Minimum board thickness 3 1/32 in. (0.8 mm) OPTIONAL infeed/outfeed table capacity 35 lbs. (16 kg)

Main materials

Main body aluminum die casting and steel Drum extruded aluminum Conveyor table steel Drum height adjustment handle Aluminum die casting and plastic OPTIONAL Infeed/Outfeed tables steel

Sander/conveyor/open stand 723540OSK 723550OSK Sander/conveyor/closed stand 723544CSK Open stand 723540OS 723550OS Closed stand 723544CS Folding Infeed/outfeed tables 723541 723551 Digital readout 723552

Depth stop assembly 723553

JWDS-2244 JWDS-2550

723553

(included w/JWDS-2550)

50F 250VAC

68.5 dB at 100cm 70 dB at 50cm

69 dB at 100cm

70.5 dB at 50cm

Sanding Drum

Drum dimensions, L x Dia 22-1/4 x 5 in. (565 x 127mm) 25-1/4 x 5 in. (642 x 127mm) Drum speed 1725 RPM Abrasive installed 80 Grit Drum elevation per one rotation of handwheel 1/16 in.

Depth stop

Stop nut elevation per one rotation 0.100 in.

Conveyor

Conveyor speed infinitely variable within 0 to 10 FPM (0-3 MPM)

Conveyor table dimensions

Conveyor height from floor (on OPTIONAL stand)

Dust collection

Dust port outside diameter 4 in. (100 mm) Minimum extraction volume required 550 CFM (15.6 CMM)

Dimensions

Assembled dimensions, mounted to OPTIONAL open or closed stand, LxWxH

Shipping carton, base machine

Shipping carton, open stand (OPTIONAL) LxWxH

Shipping carton, closed stand (OPTIONAL) LxWxH

Weights

Net weight, base machine only (approx.) 177 lbs. (80.5 kg) 183 lbs. (83 kg) Shipping weight, base machine only (approx.) 244 lbs. (111 kg) 256 lbs. (116.5 kg)

Subject to local/national electrical codes.

The specified values are emission levels and are not necessarily to be seen as safe operating levels. As workplace conditions vary, this information is intended to allow the user to make a better estimation of the hazards and risks involved only.

Use of a carrier or backer board (not provided) is recommended for cuts 1/16” or less. See sect. 9.3.

L=length, W=width, H=height, Dia=diameter

Open stand 34 in. (864 mm)

Closed stand 33-3/4 in. (857 mm)

23 x 21-3/4 in.

(584 x 552.5 mm)

42 x 24 x 52 in.

(107 x 61 x 132 cm)

44-1/2 x 27-1/2 x 28-1/4 in.

(113 x 70 x 71.75 cm)

38 x 20 x 4-1/2 in.

(96.5 x 50.8 x 11.4 cm)

26 x 21-3/4 in.

(660.4 x 552.5 mm)

45 x 24 x 52 in.

(114.3 x 61 x 132 cm)

44-1/2 x 27-1/2 x 28-1/4 in.

(113 x 70 x 71.75 cm)

44 x 20 x 4-1/2 in.

(112 x 50.8 x 11.4 cm)

40-9/16 x 19-11/16 x 30-

5/16 in. (103 x 50 x 77 cm)

The specifications in this manual were current at time of publication, but because of our policy of continuous improvement, JET reserves the right to change specifications at any time and without prior notice, without incurring obligations.

5.0 Features and Terminology

The illustration below shows the major components and features of the JWDS-2244/2550 Sanders. These are referenced throughout the manual and will help to familiarize you with the operation and functions of the machine.

Figure 5-1: features

Read and understand the entire

contents of this manual before attempting setup or operation! Failure to comply may cause serious injury.

NOTE: Figures in this manual may show Sander with stand, extension tables and/or depth stop assembly. These are optional accessories depending upon your model, and are purchased separately.

6.0 Setup and assembly

Open boxes 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 boxes with the following parts list to make sure all parts are intact. Any missing parts should be reported to your distributor. Read this instruction manual thoroughly for assembly, maintenance and safety instructions.

6.1 Shipping contents

Drum Sander (Figure 6-1)

1 Sander with conveyor table – A 1 Height adjust handle – B 1 Hose hanger – C 2 Socket hd cap screw M6x12 – C 2 Flat washer 6mm – C 1 Operating Instructions and Parts Manual 1 Product registration card

OPTIONAL Infeed/Outfeed Tables (Figure 6-2)

2 Infeed/outfeed tables – D 1 Rear (short) fixed bracket – E 1 Front (long) fixed bracket – F 2 Left folding table brackets – G 2 Right folding table brackets – H 1 Hardware package, includes: 4 Locking handles – HP1 4 Disc washers – HP2 4 Oilite washers – HP3 16 Socket hd cap screws M8x16 – HP4 16 Flat washers M8 – HP5 4 Socket hd cap screws M6x20 – HP6 4 Eccentric cams – HP7 4 Flat washers M6 – HP8

6.2 Tools required for assembly

Figure 6-1: Sander contents (JWDS-2550 shown)

Figure 6-2: Infeed/Outfeed Tables (OPTIONAL)

5mm, 6mm hex (Allen) wrenches Straight edge (such as straight steel bar or carefully jointed board)

Additional tools may be required depending upon other accessories purchased.

Figure 6-3: Assembly of Sander and OPTIONAL Infeed/Outfeed Tables

6.3 Assembling stand

An open stand is provided standard with the JWDS2244 Sander. An open or closed stand is available as an optional accessory (separate purchase) for the JWDS-2550 Sander. Refer to the assembly instructions that accompany the stand.

6.4 Mounting sander to stand

The closed stand (for JWDS-2550) is oriented so that storage door is located at back of machine. Front/back orientation is not important on the open stand.

Use an assistant to help lift and

position sander atop stand.

1. Remove any screws holding sander to pallet,

and lift sander from crate.

2. Position sander atop stand so that six threaded

holes of base align with holes in stand rails. Insert provided screws and washers and tighten securely.

6.5 Handle and hose hanger

See Figure 6-3.

1. Install height adjustment handle (B) onto

spindle and tighten set screw.

2. Install hose hanger (C) with screws and

washers (C

1/C2

6.6 Folding infeed/outfeed tables

(OPTIONAL)

See Figure 6-3.

The sander must be bolted to the stand or a work table when using these table extensions. Maximum working load of each table is 35 pounds. Fasteners are provided with the extension tables.

NOTE: If using the folding feature of the infeed/outfeed tables, make sure your table or bench allows for such vertical drop at front and back.

To install infeed table:

1. Install front (F) fixed bracket to threaded holes in sander base with screws and washers (HP4/5). Make sure bracket is oriented as shown. Bracket must be flush against base.

NOTE: Long bracket mounts to front (infeed); short bracket to rear (outfeed).

2. Tighten screws (HP4).

3. Install eccentric cam (HP8) with screw and washer (HP6/7). Finger tighten only at this time.

4. Install left (G) and right (H) table brackets, using handles and washers (HP1/2/3).

Note: Handle (HP1) is adjustable – pull up and rotate on pin to more convenient position, then release allowing it to settle back onto pin.

5. Place infeed table (D) onto table brackets and secure with screws and washers (HP4/5). Finger tighten only.

Align infeed table with sander’s conveyor table as follows.

See Figures 6-3 and 6-4.

6. Place a straight-edge at one side of conveyor table under drum and extending out over infeed table. See Figure 6-4. You may wish to lower drum until it contacts the straight edge to hold it in place.

7. Raise infeed table until it evenly contacts straight edge. If needed, loosen four screws (HP4) beneath table and adjust table to level. Tighten screws.

8. Loosen screw (HP6) and rotate eccentric cam (HP8) until it contacts lip of table bracket. Do this on both sides of infeed table. This ensures infeed table will remain level with conveyor table each time it is returned to operating position. Tighten screws (HP6).

9. Install outfeed table using identical procedure as above.

TIP: It is often preferable to position infeed/ outfeed tables slightly below conveyor table surface, particularly if stock being sanded is bowed, warped or otherwise inconsistent. Also, if stock slips on conveyor, the tables may be positioned too high.

Figure 6-5 (hose and clamp not included)

6.8 Installing abrasives

Proper attachment of the abrasive strip to the drum is critical to achieving top performance from your drum sander.

An 80-grit, 3-inch wide abrasive is pre-installed on drum. Optional pre-cut (“Ready-to-Wrap”) abrasives of different grits are available; see sect. 14.0.

(TIP: If you are using an after-market abrasive, use a new JET-supplied abrasive as a template to quickly cut a new strip. Alternatively, a diagram is supplied in Figure 6-6 showing trim dimensions.)

Figure 6-4: infeed table alignment

6.7 Dust collection

Dust collection is mandatory for a safe work environment and extended abrasive life. The JWDS-2244/2550 is equipped with a 4-inch dust collection port. Secure a 4-inch dust collection hose to the port with a hose clamp (Figure 6-5), and connect to a high volume dust collector (minimum 550 CFM). Note: Dryer vent hose is not acceptable

for this purpose.

Keep hose clear of conveyor area by directing it over the hose hanger at rear of sanding head.

A standard shop type canister (16 gal. or larger) can be used for short periods of sanding time but requires converting the hose size down to 2-1/2 inch. An adaptor (not included) is required.

Figure 6-6: abrasive trimming

(not applicable to Ready-to-Wrap strips)

To install abrasive strip:

1. Press fastener lever (Figure 6-7) on outboard (left) end of drum, and insert tapered end of abrasive through slit in fastener, as shown. Align tapered edge of abrasive strip with left edge of drum. Insert enough strip so that the right edge aligns with the reference notch; this will ensure the proper length of strip to be secured at the opposite end of the drum.

Figure 6-7

2. Release fastener lever to secure end of strip.

3. Begin wrapping abrasive around drum. The tapered edge of strip end should follow as closely as possible to edge of drum.

4. Continue wrapping abrasive in spiral fashion by rotating drum with one hand and guiding strip with the other. See Figure 6-8.

Successive windings of strip must not have any overlap. They should be flush with previous windings or with a slight gap between.

Figure 6-8

5. Press inboard take-up lever (Figure 6-9) and insert trailing end of strip as far as it will go. If necessary, trim tapered end of abrasive strip.

6. Release inboard take-up lever to secure strip.

All abrasive strips will stretch over time as they are used, and may stretch enough to allow the take-up lever to reach its lowest position so that it cannot maintain tension on the strip. If this occurs, follow the above procedures to reset the take-up lever.

Figure 6-9

7.0 Electrical connections

All electrical connections must be done by a qualified electrician in compliance with all local codes and ordinances. Failure to comply may result in serious injury.

The JWDS-2244 and JWDS-2550 Sanders are rated for single phase, 115-volt power only. The

sander comes with a plug designed for use on a circuit with a grounded outlet that looks like the one pictured in Figure 7-1.

Before connecting to power source, be sure switch is in off position.

It is recommended that the sander be connected to a dedicated 20 amp circuit with circuit breaker or fuse. If connected to a circuit protected by fuses, use time delay fuse marked “D”. Local codes take

precedence over recommendations.

7.1 GROUNDING INSTRUCTIONS

This machine must be grounded. In the event of a malfunction or breakdown, grounding provides a path of least resistance for 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 plugged into a matching outlet that is properly installed and grounded in accordance with all local codes and ordinances.

Do not modify the plug provided - if it will not fit the outlet, have the proper outlet installed by a qualified electrician.

Improper connection of the equipment-grounding 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 equipment-grounding conductor.

If repair or replacement of the electric cord or plug is necessary, do not connect the equipmentgrounding conductor 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 is properly grounded. Failure to comply may cause serious or fatal injury.

Use only 3-wire extension cords that have 3-prong grounding plugs and 3-pole receptacles that accept the tool's plug.

Repair or replace damaged or worn cord immediately.

This tool is intended for use on a circuit that has an outlet that looks like the one illustrated in Figure 7-

1. An adapter, shown in Figure 7-2, may be used to connect this plug to a 2-pole receptacle as shown in Figure 7-2 if a properly grounded outlet is not available. The temporary adapter should be used only until a properly grounded outlet can be installed by a qualified electrician. The green-colored rigid ear, lug, and the like, extending from the adapter must be connected to a permanent ground such as a properly grounded outlet box.

In Canada, the use of a temporary adaptor is not permitted by the Canadian Electrical Code, C22.1.

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