Delta 31-250 Instruction Manual download pdf (Page 6)

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 machine’s

plug. When using an extension cord, be sure to use one heavy enough to carry the current of the machine. An

undersized cord will cause a drop in line voltage, resulting in loss of power and overheating. Fig. D, 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

FOREWORD

The Delta Model 31-250 / 31-255X is an 18" x 36" drum sander with a two-speed drum. Its single-piece frame and cast-

iron table construction provides accuracy, stability, and easy adjustments. This unit can be fitted with an optional

outboard shaft that accommodates an accessory pneumatic drum for contour sanding. The 31-250 and 31-255X will

provide accurate sanding for wood up to 18" in one pass (36" in two passes).

Fig. D

MINIMUM GAUGE EXTENSION CORD

RECOMMENDED SIZES FOR USE WITH STATIONARY ELECTRIC MACHINES

Ampere Total Length Gauge of

Rating Volts of Cord in Feet Extension Cord

0-6 120

up to

25 18 AWG

0-6 120 25-50 16 AWG

0-6 120 50-100 16 AWG

0-6 120 100-150 14 AWG

6-10 120

up to

25 18 AWG

6-10 120 25-50 16 AWG

6-10 120 50-100 14 AWG

6-10 120 100-150 12 AWG

10-12 120

up to

25 16 AWG

10-12 120 25-50 16 AWG

10-12 120 50-100 14 AWG

10-12 120 100-150 12 AWG

12-16 120

up to

25 14 AWG

12-16 120 25-50 12 AWG

12-16 120

GREATER THAN 50 FEET NOT RECOMMENDED

FUNCTIONAL DESCRIPTION

UNPACKING AND CLEANING

Carefully unpack the machine 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.

NOTICE: THE MANUAL COVER PHOTO ILLUSTRATES THE CURRENT

PRODUCTION MODEL. ALL OTHER ILLUSTRATIONS ARE REPRESENTATIVE

ONLY AND MAY NOT DEPICT THE ACTUAL COLOR, LABELING OR

ACCESSORIES AND MAY BE INTENDED TO ILLUSTRATE TECHNIQUE ONLY.

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Delta 31-250 Instruction Manual Page 6

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