Delta (Model 31-300) manual

INSTRUCTION MANUAL P ART NO. 913131 - 04-12-05 Copyright © 2005 Delta Machinery T o learn more about DEL T A MACHINER Y visit our website at: www .deltamachinery .com. For Parts, Service, W arranty or other Assistance, please call 1-800-223-7278 ( In Canada call 1-800-463-3582). Sanding Center 6" Belt/12" Disc Sander (Model 31-300)[...]

2 T ABLE OF CONTENTS Read and understand all warnings and operating instructions before using any tool or equipment. When using tools or equipment, basic safety precautions should always be followed to r educe the risk of personal injury . Improper operation, maintenance or modification of tools or equipment could r esult in serious injury and prop[...]

3 Indicates an imminently hazardous situation which, if not avoided, will r esult in death or serious injury . Indicates a potentially hazardous situation which, if not avoided, could r esult in death or serious injury . Indicates a potentially hazardous situation which, if not avoided, may r esult in minor or moderate injury . Used without the saf[...]

4 GENERAL SAFETY RULES READ AND UNDERST AND ALL W ARNINGS AND OPERA TING INSTRUCTIONS BEFORE USING THIS EQUIPMENT . Failure to follow all instructions listed below , may result in electric shock, fire, and/or serious personal injury or pr operty damage. IMPORT ANT SAFETY INSTRUCTIONS 1. FOR YOUR OWN SAFETY , READ THE INSTRUCTION MANUAL BEFORE OPERA[...]

5 F AILURE TO FOLLOW THESE RULES MA Y RESUL T IN SERIOUS PERSONAL INJUR Y . ADDITIONAL SPECIFIC SAFETY RULES SA VE THESE INSTRUCTIONS. Refer to them often and use them to instruct others. 1. DO NOT OPERA TE THIS MACHINE until it is completely assembled and installed according to the instructions. A machine incorrectly assembled can cause serious in[...]

6 A separate electrical circuit should be used for your machines. This cir cuit should not be less than #12 wire and should be protected with a 20 Amp time lag fuse. If an extension cor d is used, use only 3-wire extension cor ds which have 3- prong gr ounding type plugs and matching receptacle which will accept the machine’ s plug. Before connec[...]

7 3. 240 VOL T SINGLE PHASE OPERA TION The motor supplied with your saw is a dual voltage, 120/240 volt motor . It is set at the factory at 120 volts. If it is desired to operate your machine at 240 volts, single phase, it is necessary to reconnect the motor leads in the motor junction box by following instructions given on the motor nameplate. MAK[...]

8 FOREWORD Delta Model 31-300 is an industrial/commercial duty 1-1/2 HP belt/disc sander . The induction-type, ball-bearing motor provides long-lasting, smooth performance. The Sanding Center can provide 3000 SFPM with the belt, and the disc will r evolve at 2100 RPM. FUNCTIONAL DESCRIPTION CAR TON CONTENTS 1. Disc Sander T able 2. Belt Guard 3. #1[...]

9 Fig. 5 UNP ACKING AND CLEANING Carefully unpack the machine and all loose items fr om the shipping container(s). Remove the protective coating fr om all unpainted surfaces. This coating may be removed with a soft cloth moistened with kerosene (do not use acetone, gasoline or lacquer thinner for this purpose). After cleaning, cover the unpainted s[...]

10 A TT ACHING MACHINE TO ST AND DISCONNECT MACHINE FROM POWER SOURCE. 1. Pull the belt (A) Fig. 8 down through the smaller rectangular hole (B) in the top shelf of the stand. 2. Fasten the machine to the top shelf with four 5/16" x 1/2" bolts and lockwashers (C) Fig. 8 (three of which are shown) and four #10-32 self-tapping scr ews and w[...]

11 A B C Fig. 9 Fig. 10 Fig. 11 DISCONNECT MACHINE FROM POWER SOURCE. 1. Thread the disc table trunnion stud (A) Fig. 12 into the hole (B) on the side of the machine and tighten snug. 2. Place the disc table trunnion clamp (C) on the stud and insert the two pins (D) in the two holes (E). 3. Attach the washer , spring, and knob (Inset - Fig. 12) 4. [...]

Fig. 18 A ST AR TING AND STOPPING THE MACHINE The on-off switch (A) Fig. 16 is located on the sander base. T o tur n the sander “ON”, move the switch to the up position. T o tu rn the sander “OFF”, move the switch to the down position. Fig. 16 Fig. 17 A A 12 DISCONNECT MACHINE FROM POWER SOURCE. 1. Insert the trunnion key (A) Fig. 14 into t[...]

13 ADJUSTING TENSION AND TRACKING OF THE BEL T The machine is shipped without belt tension. Before operating the machine, follow these instructions for adjusting the belt for tension and tracking. 1. Loosen the two lock knobs (A) Fig. 19, and remove the top cover (B). 2. T ur n the belt tension lever (C) Fig. 20 counter -clockwise to increase the b[...]

14 14 After a long period of time, adjustments may be necessary to maintain the tension and tracking of the sanding belt. If the belt will not hold its tension, tighten the set screw (G) Fig. 22. If the belt will not hold its tracking, tighten the set screw (F) Fig. 22. Make only small adjustments to these screws. Over -tightening will lock the ten[...]

15 CHANGING POSITION OF SANDING ARM DISCONNECT MACHINE FROM POWER SOURCE. 1. The sanding arm (A) can be used in the vertical position (Fig. 31), the horizontal position (Fig. 30), or any angle in between. Loosen the lock handle (B), position the arm (A) to the desired angle, and tighten the lock handle (B). 2. The top idler pulley cover (C) Figs. 3[...]

16 16 DISCONNECT MACHINE FROM POWER SOURCE Fig. 33 Fig. 32 ADJUSTING SANDING DISC T ABLE 90 DEGREES TO DISC TIL TING THE DISC SANDER T ABLE DISCONNECT MACHINE FROM POWER SOURCE. The table (A) can be tilted 45 degrees down (Fig. 34), by loosening the lock handle (B), tilting the table (A), and tightening lock handle (B). The degree of tilt is determ[...]

17 REPLACING SANDING BEL T T o replace the sanding belt: 1. Loosen the two lock knobs (A) Fig. 38, and remove the top cover (B). 2. Loosen the two screws (C) Fig. 39 enough to allow the back panel (D) Fig. 38 to hinge open. NOTE: The scr ew (C) cannot be removed. 3. Release the belt tension by turning the hand lever (E) Fig. 38. Slide the belt (F) [...]

18 Fig. 45 Fig. 44 SURF ACING OR EDGE SANDING WITH SANDING BEL T When surfacing (Fig. 44) or edge sanding (Fig. 45), place the sanding arm in the horizontal position and use the table (A) Fig. 44 and Fig. 45 to keep the workpiece in place. Hold the workpiece firmly and keep your fingers away from the sanding belt. Place the end of the workpiece aga[...]

19 Fig. 48 END SANDING WITH THE DISC When sanding the ends of narrow workpieces, use the sanding disc and an accessory miter gauge (A) Fig. 48. Move the work from the center to the left side (downwar d) of the sanding disc. AL WA YS SAND ON THE LEFT SIDE (DOWNWARD ROT A TION SIDE) OF THE SANDING DISC. SANDING ON THE RIGHT SIDE (UPWARD ROT A TION SI[...]

20 20 TROUBLESHOOTING For assistance with your machine, visit our website at www .deltamachinery .com for a list of service centers or call the DEL T A Machinery help line at 1-800-223-7278 (In Canada call 1-800-463-3582). MAINTENANCE P AR TS, SERVICE OR WARRANTY ASSIST ANCE All Delta Machines and accessories are manufactur ed to high quality stand[...]

21 A complete line of accessories is available from your Delta Supplier , Porter -Cable • Delta Factory Service Centers, and Delta Authorized Service Stations. Please visit our W eb Site www .deltamachinery .com for a catalog or for the name of your nearest supplier . Since accessories other than those offer ed by Delta have not been tested with [...]

22 NOTES[...]

23 NOTES[...]

The following are trademarks of POR TER-CABLE • DEL T A (Las siguientes son marcas registradas de POR TER-CABLE • DEL T A S.A.) (Les marques suivantes sont des marques de fabriquant de la POR TER-CABLE • DEL T A): Auto-Set ® , BAMMER ® , B.O.S.S. ® , Builder’ s Saw ® , Contractor’ s Saw ® , Contractor’ s Saw II™, Delta ® , DEL T[...]