Delta 31-280 Instruction Manual download pdf (Page 5)

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. Figs. 4A and 4B show 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. 4A

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

0-6 120

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

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

0-6 240

up to

50 18 AWG

0-6 240 50-100 16 AWG

0-6 240 100-200 16 AWG

0-6 240 200-300 14 AWG

6-10 240

up to

50 18 AWG

6-10 240 50-100 16 AWG

6-10 240 100-200 14 AWG

6-10 240 200-300 12 AWG

10-12 240

up to

50 16 AWG

10-12 240 50-100 16 AWG

10-12 240 100-200 14 AWG

10-12 240 200-300 12 AWG

12-16 240

up to

50 14 AWG

12-16 240 50-100 12 AWG

12-16 240

GREATER THAN 100 FEET NOT RECOMMENDED

CHANGING VOLTAGE

The motor supplied with this tool is a dual voltage, 120/240

Volt, Single Phase motor and is wired for 120 volts.

To operate the tool at 240 volts:

1. DISCONNECT TOOL FROM POWER SOURCE.

2. Remove the motor cover (A) Fig. 5 by loosening the

six screws that fasten it to the stand.

3. Remove the brown wire from terminal 2. Connect it

to terminal 6 (Fig. 6).

4. Remove the blue wire from terminal 4. Connect it

to terminal 2 (Fig. 6). NOTE: The wires have spade-type

quick connectors. No wire nuts are required.

5. Replace the motor cover removed in STEP 2.

6. Replace the 120 volt plug (supplied with the motor)

with a 240 volt plug that has two flat, current-carrying

prongs, and one round or “U” shaped ground prong.

(See Fig. 3) Use this plug ONLY with the proper mating

3-conductor grounded receptacle (See Fig. 3).

Fig. 5

Fig. 6

BROWN

RED

BLUE

120 VOLTS

240 VOLTS

BLUE

RED

BROWN

Fig. 4B

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

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Delta 31-280 Instruction Manual Page 5

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