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Delta 31-392 - page 1
INSTRUCTION MANUAL 6" Edge Sander (Model 31-390, 391, 392) P ART NO. 406-11-651-0006 - 03-12-02 Copyright © 2002 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). ...
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Delta 31-392 - page 2
2 GENERAL SAFETY RULES W oodworking can be dangerous if safe and pr oper operating procedur es ar e not followed. As with all machinery , ther e are certain hazar ds involved with the operation of the pr oduct. Using the machine with respect and caution will considerably lessen the possibility of personal injury . However , if normal safety precaut ...
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Delta 31-392 - page 3
ADDITIONAL SAFETY RULES FOR ABRASIVE FINISHING MACHINES 1 . DO NOT OPERA TE THIS MACHINE UNTIL it is assembled and installed according to the instructions. 2. OBT AIN ADVICE from your supervisor, instructor , or another qualified person if you are not familiar with the operation of this machine. 3. FOLLOW ALL WIRING CODES and recommended electrical ...
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Delta 31-392 - page 4
4 POWER CONNECTIONS A separate electrical circuit should be used for your tools. This cir cuit should not be less than #12 wir e and should be protected with a 20 Amp time lag fuse. If an extension cor d is used, use only 3-wir e extension cords which have 3- prong gr ounding type plugs and matching r eceptacle which will accept the tool’ s plug. ...
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Delta 31-392 - page 5
Fig. A FUNCTIONAL DESCRIPTION FOREWORD Delta Model 31-390 is a lar ge capacity Edge Sander for fast, efficient, straight and bevel edge sanding with the added ability to handle contour sanding jobs. The standard unit includes; motor , stand legs, push-button controls, magnetic starter , transformer , overload protection, laminate coated tables, gra ...
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Delta 31-392 - page 6
6 ASSEMBLING LEGS TO EDGE SANDER Carefully assemble the two support legs to the base of the edge sander as follows: 1. Fasten each support leg (C) Fig. 3, to the base of the machine (A) with five 3/8-16 x 1" hex head screws, ten flat flatwashers, five lockwashers and hex nuts, (D) Fig. 3. Assemble flat flatwashers to screws, insert scr ews thr ...
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Delta 31-392 - page 7
ASSEMBLING BEL T TENSION LEVER Assemble the belt tension lever (A) Fig. 7, to the tensioning mechanism by threading the end of lever (B) into the tapped hole (C) and tighten lock nut. ASSEMBLING TOP GUARD AND DUST CHUTE ASSEMBL Y T wo dust chutes (A) Fig. 8, are supplied with the top guard (B) and ar e equipped with four -inch diameter openings. Th ...
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Delta 31-392 - page 8
ASSEMBLING AUXILIAR Y ABRASIVE DRUM AND SPINDLE ASSEMBL Y TO DRIVE PULLEY The auxiliary abrasive drum and spindle assembly is furnished as standard equipment with the edge sander and is used for finish sanding of small contour workpieces. T o assemble the abrasive drum and spindle assembly , pr oceed as follows: NOTE: The top guard and dust chute a ...
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Delta 31-392 - page 9
ASSEMBLING AUXILIAR Y END T ABLE ASSEMBL Y The auxiliary end table is furnished as standard equip- ment with the edge sander . The table is used when performing contour sanding operations around the drive pulley and auxiliary abrasive drum and spindle assembly . T o assemble the auxiliary end table proceed as follows: 1. DISCONNECT TOOL FROM POWER ...
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Delta 31-392 - page 10
ST AR TING AND STOPPING EDGE SANDER T o start the tool, push the start button (A) Fig. 25; to stop the tool, push stop button (B). ADJUSTING T ABLE POSITION T o raise or lower the straight table, loosen lock knobs (A) Fig. 26, adjust table height and tighten knobs (A). NOTE: When straight sanding, it is advisable to raise one end of the table so it ...
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Delta 31-392 - page 11
ADJUSTING LONG PLA TEN T o adjust the long platen when sanding on the straight table: 1. DISCONNECT TOOL FROM POWER SOURCE. 2. Remove the top guard and dust chute assembly . 3. Loosen two hex nuts (A) Fig.29 holding brackets (B) at each end of the machine, and move platen (C) in or out as needed. IMPORT ANT : MAKE CERT AIN THE LONG STRAIGHT PLA TEN ...
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Delta 31-392 - page 12
ADJUSTING BEL T TRACKING T o check and adjust the tracking of the sanding belt on the pulleys, proceed as follows: 1. Raise the dust chutes (A) Fig. 34, at both ends of the top guard and dust chute assembly . 2. Make certain the top guard and dust chute assembly is not interfering with the rotation of the sanding belt. 3. Apply power to the machine ...
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Delta 31-392 - page 13
EDGE SANDING When edge sanding, it is advisable to raise one end of the table as shown in Fig. 36. This allows cooler belt running, prevents spot wear , reduces material burning and promotes longer belt life. The table should be positioned so it is close to, but not contacting the sanding belt. CONTOUR SANDING AROUND THE DRIVE PULLEY IMPORT ANT : T ...
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Delta 31-392 - page 14
CHANGING SANDING BEL TS T o remove and install sanding belts, proceed as follows: 1. DISCONNECT TOOL FROM POWER SOURCE. 2. The sanding belt can be changed with or without the top guard and dust chute r emoved fr om the machine. 3. Push in on belt tension lever (A) Fig. 39, to release belt tension, and remove sanding belt (B) as shown. 4. Push in on ...
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Delta 31-392 - page 15
15 T wo Y ear Limited W arranty Delta will repair or r eplace, at its expense and at its option, any Delta machine, machine part, or machine accessory which in normal use has proven to be defective in workmanship or material, pr ovided that the customer returns the product prepaid to a Delta factory service center or authorized service station with ...
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Delta 31-392 - page 16
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