Delta 31-392 User Manual download pdf (Page 5)

Fig. A

FUNCTIONAL DESCRIPTION

FOREWORD

Delta Model 31-390 is a large 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, graphite platens, three sanding drums with 80 grit

medium abrasive sleeves and 6" x 132" belt, sealed ball bearing idler pulley, rubber contact motor pulley, belt guard with

hinged end caps and instruction manual.

GROUNDED OUTLET BOX

CURRENT

CARRYING

PRONGS

GROUNDING BLADE

IS LONGEST OF THE 3 BLADES

31-390 ONLY:

Use proper extension cords. Make sure your extension

cord is in good condition and is a 3-wire extension cord

which has a 3-prong grounding type plug and matching

receptacle which will accept the tool’s plug. When using

an extension cord, be sure to use one heavy enough to

carry the current of the tool. An undersized cord will

cause a drop in line voltage, resulting in loss of power

and overheating. Fig. C, shows the correct gauge to use

depending on the cord length. If in doubt, use the next

heavier gauge. The smaller the gauge number, the

heavier the cord.

EXTENSION CORDS

Fig. C

MINIMUM GAUGE EXTENSION CORD

RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC TOOLS

Ampere Total Length Gauge of

Rating Volts of Cord in Feet Extension Cord

0-6 230

up to

50 18 AWG

0-6 230 50-100 16 AWG

0-6 230 100-200 16 AWG

0-6 230 200-300 14 AWG

6-10 230

up to

50 18 AWG

6-10 230 50-100 16 AWG

6-10 230 100-200 14 AWG

6-10 230 200-300 12 AWG

10-12 230

up to

50 16 AWG

10-12 230 50-100 16 AWG

10-12 230 100-200 14 AWG

10-12 230 200-300 12 AWG

12-16 230

up to

50 14 AWG

12-16 230 50-100 12 AWG

12-16 230

GREATER THAN 100 FEET NOT RECOMMENDED

Fig. B

UNPACKING AND CLEANING

Carefully unpack the tool, two legs and all loose items

from the shipping container(s). Remove the protective

coating from 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 surfaces with

a good quality household floor paste wax.

Fig. 2, illustrates the basic sander (A) removed from the

shipping container. Place the sander (A) on a supporting

surface that will hold 375 lbs., such as two saw horses,

which will allow safe and efficient assembly of the legs.

Fig. 2

CONNECT

THREE POWER

LEADS TO

TERMINALS

L1 - L2 - L3

AND GREEN

LEAD TO THE

GROUND

STRIP

GROUND

STRIP

BRING POWER

LEAD THRU

ENTRANCE

HOLE IN

BOTTOM OF

STARTER

ENCLOSURE

1 2 3 4 5 6 7 8 9 10 ... 15 16

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Delta 31-392 User Manual Page 5

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