Delta 31-250 manual

INSTRUCTION MANUAL 18" x 36" Drum Sander (Models 31-250, 31-255X) P ART NO. 406-13-651-0021 - 06-19-03 Copyright © 2003 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).[...]

2 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[...]

3 F AILURE TO FOLLOW THESE RULES MA Y RESUL T IN SERIOUS PERSONAL INJUR Y . 1. FOR YOUR OWN SAFETY , READ THE INSTRUC- TION MANUAL BEFORE OPERA TING THE MACHINE. Learning the machine’ s application, limitations, and specific hazards will gr eatly minimize the possibility of accidents and injury . 2. USE CERTIFIED SAFETY EQUIPMENT . Eye protection[...]

4 F AILURE TO FOLLOW THESE RULES MA Y RESUL T IN SERIOUS PERSONAL INJUR Y . ADDITIONAL SAFETY RULES FOR DRUM SANDERS SA VE THESE INSTRUCTIONS. Refer to them often and use them to instruct others. 1. DO NOT OPERA TE THIS TOOL UNTIL it is assembled and installed according to the instructions. 2. OBT AIN ADVICE from your supervisor, instructor , or an[...]

5 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[...]

6 Use proper extension cor ds. Make sure your extension cor d is in good condition and is a 3-wire extension cord which has a 3-pr ong grounding type plug and matching r eceptacle which will accept the machine’ s plug. When using an extension cord, be sur e to use one heavy enough to carry the current of the machine. An undersized cord will cause[...]

7 CAUTION T AG CAUTION: Pay close attention to caution tags attached to this machine and follow these instructions precisely . This machine is heavy . Remove the container from ar ound the machine. DO NOT lift it from the container . Carefully unpack all loose items fr om the shipping container and cut the carton from ar ound the machine. CAR TON C[...]

8 A TT ACHING LEGS This machine is heavy . Use two or more people when lifting. 1. With the machine on its back, resting on the two wood blocks (not supplied), attach the legs. (Fig. 1). NOTE: The legs are universal but the mounting hole pattern is different fr ont to rear . See (A) Fig. 2A and Fig. 2B. 2. Attach the leg that goes under the motor f[...]

9 Fig. 7 A TT ACHING THICKNESS SCALE 1. Remove screw and washer (A) Fig. 7. 2. Place thickness scale (B) Fig. 8 over the hole and replace screw and washer (A). 3. Loosen screw (C) Fig. 9, and position pointer against scale (B) Fig. 9. Tighten screw (C) Fig. 9. IMPORT ANT : Refer to section “CHECKING AND ADJUSTING T ABLE HEIGHT” in this manual f[...]

10 OPERA TING CONTROLS AND ADJUSTMENTS Fig. 12 Fig. 13 Fig. 15 B A B C B ST ARTING AND STOPPING THE MACHINE 1. The drum motor on/off switch (A) Fig. 12 is located underneath the switch shield (B). T o turn the drum “ON”, move switch (A) to the “ON” (up) position. 2. T o turn the drum “OFF”, push down on switch shield (B) Fig. 13. NOTE: [...]

11 CHECKING AND ADJUSTING FEED BEL T TRACKING AND TENSION IMPORT ANT : READ THIS COMPLETE SECTION BEFORE MAKING ANY ADJUSTMENTS TO BEL T TRACKING OR TENSION. TRACKING DISCONNECT MACHINE FROM POWER SOURCE. IMPORT ANT : The feed belt runs slowly , therefor e response time to adjustments may also be slow . T ake your time. 1. The tracking and tensioni[...]

12 Fig. 22 1. Run a piece of lumber through the drum sander (Fig. 22) to finish one side of the boar d. 2. Use a square (A) Fig. 23 to measur e the thickness of the lumber . 3. Loosen the screw (B) Fig. 24. Move scale up or down until the cursor shows the exact boar d thickness that was measured in STEP 2 . Tighten the scr ew . SETTING THE HEIGHT S[...]

3. Use a 9/16” socket with an extension (not supplied). Place it in one of the two holes where the hole plugs wer e removed. Loosen one hex bolt, then the other to r elieve tension on the motor . (One is shown at (D) Fig. 26). Apply upward pr essure on the motor (located under the machine) to relieve tension on the belt. Replace or change the bel[...]

14 DUST COLLECTION The drum cover has a 4” O.D. dust chute (A) Fig. 35 that connects to a dust collection system. NEVER OPERA TE THIS MACHINE WITHOUT FIRST CONNECTING IT TO A DUST COLLECTION SYSTEM. It is recommended that a dust collection system be used with at least 400 to 600 CFM capacity . Attach a 4" hose to the hood, or attach an acces[...]

15 WHA T F ACTORS AFFECT SANDING OPERA TIONS? A. SANDING BEL T GRIT 1. 36 grit – Used for very aggressive stock r emoval, glue removal, or for sanding r ough boards. Leaves a r ough finish. 2. 60 grit – Used for heavy stock removal and r ough surfaces, and for truing warped material. Leaves a rough finish. 3. 80 grit – Used for general purpos[...]

16 WHA T CAUSES BURN MARKS Burning the wood can be caused by several things. W e suggest checking for; sanding belt overlap on the drum wrap, sanding paper loading up, too much stock removal with too fine a grit paper , too slow a feed rate, and dull or worn sand paper . WHEN DO I MAKE T ABLE HEIGHT ADJUSTMENTS FOR MA TERIAL REMOV AL? Locate the ha[...]

17 HOW DO I SAND GLUED BOARDS? 1. Glue the boards as flat as possible at the outset. 2. Remove excess glue from the top and bottom befor e it dries. 3. Use a coarse belt for initial stock removal (36 to 60 grit). 4. Run the board at dif ferent locations over the entir e length of the drum to prevent glue build-up on the sanding belt. 5. After glued[...]

18 STEP 1 - TENSION ON TIMING BEL T 1. The timing belt should be checked for the correct tension. If the belt is too tight, the table will be difficult to move. A loose timing belt may cause the belt to jump a tooth on the timing gear . Deflection in the middle of the long span should be 2 - 3 lbs to deflect the belt to the outside frame wall. 2. T[...]

19 from turning and tighten the socket head screw(B) with the 3/16" hex wrench. 4. With the support plate level, try moving the table up and down. 5. If the movement is still tight, go back through this procedur e before going to the next step of CHECKING LOCK NUT ADJUSTMENT . STEP 3 - CHECKING LOCK NUT ADJUSTMENT 1. At the base of three of th[...]

20 MAINTENANCE MAKE CERT AIN THE MACHINE IS DISCONNECTED FROM THE POWER SOURCE BEFORE PERFORMING MAINTENANCE PROCEDURES. 1. Periodically clean or vacuum the feed belt. 2. Periodically clean the sawdust from sanding cylinder cavities. BRUSH INSPECTION AND REPLACEMENT CAUTION: BEFORE INSPECTING BRUSHES, DISCONNECT THE MACHINE FROM THE POWER SOURCE. F[...]

21 NOTES[...]

22 NOTES[...]

23 P AR TS, SERVICE OR WARRANTY ASSIST ANCE All Delta Machines and accessories are manufactur ed to high quality standards and ar e serviced by a network of Porter -Cable • Delta Factory Service Centers and Delta Authorized Service Stations. T o obtain additional information regar ding your Delta quality product or to obtain parts, service, warra[...]

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