Delta 31-392 User Manual download pdf (Page 4)

POWER CONNECTIONS

A separate electrical circuit should be used for your tools. This circuit should not be less than #12 wire and should be

protected with a 20 Amp time lag fuse. If an extension cord is used, use only 3-wire extension cords which have 3-

prong grounding type plugs and matching receptacle which will accept the tool’s plug. Before connecting the motor to

the power line, make sure the switch is in the “OFF” position and be sure that the electric current is of the same

characteristics as indicated on the tool. All line connections should make good contact. Running on low voltage will

damage the motor.

WARNING: DO NOT EXPOSE THE TOOL TO RAIN OR OPERATE THE TOOL IN DAMP LOCATIONS.

MOTOR SPECIFICATIONS

Your tool is wired for 230 volt, 60 HZ alternating current. Before connecting the tool to the power source, make sure

the switch is in the “OFF” position.

GROUNDING INSTRUCTIONS

WARNING: THIS TOOL MUST BE GROUNDED WHILE IN USE TO PROTECT THE OPERATOR FROM

ELECTRIC SHOCK.

SINGLE PHASE INSTALLATION 31-390

The motor on your tool is wired for 230 Volt, single phase

operation. The power cord is equipped with a plug that

has two flat current carrying prongs in tandem and one

round or "U" shaped longer ground prong. This is used

only with the proper mating 3-conductor grounding type

receptacle, as shown in Fig. A.

When the 230 Volt, three prong plug is plugged into a

grounded 3-conductor receptacle, as shown in Fig. A,

the long ground prong on the plug contacts first, so the

tool is properly grounded before electricity reaches it.

THREE PHASE INSTALLATION 31-391

The motor on your tool is to be wired for 230 Volt, three

phase operation, a power cord and plug is not supplied

with the tool. To bring power to the tool proceed as

follows:

1. Remove cover from the starter box.

2. Bring the three phase power cord through the en-

trance hole in the bottom of starter box and connect the

three power leads to terminals Ll, L2 and L3 and the

ground wire to one of the terminals on the grounding

strip shown in Fig. B.

3. Turn the tool on and off and check if the sanding belt

is rotating in the right direction. The sanding belt should

turn counterclockwise when looking down on the belt.

4. If the sanding belt is rotating in the wrong direction,

DISCONNECT THE TOOL FROM THE POWER

SOURCE and interchange any two of the three leads

that are connected to terminals Ll, L2, L3, Fig. B.

5. Replace cover on the starter box.

PERMANENTLY CONNECTED TOOLS:

If the tool is intended to be permanently connected the

tool should be connected to a grounded metal

permanent wiring system; or to a system having an

equipment-grounding conductor.

WARNING: IN ALL CASES, MAKE CERTAIN THE

MACHINE IN QUESTION IS PROPERLY

GROUNDED. IF YOU ARE NOT SURE HAVE A

QUALIFIED ELECTRICIAN CHECK THE MACHINE.

1. All grounded, cord-connected tools:

In the event of a malfunction or breakdown, grounding

provides a path of least resistance for electric current to

reduce the risk of electric shock. This tool is equipped with

an electric cord having an equipment-grounding

conductor and a grounding plug. The plug must be

plugged into a matching outlet that is properly installed

and grounded in accordance with all local codes and

ordinances.

Do not modify the plug provided - if it will not fit the outlet,

have the proper outlet installed by a qualified electrician.

Improper connection of the equipment-grounding

conductor can result in risk of electric shock. The

conductor with insulation having an outer surface that is

green with or without yellow stripes is the equipment-

grounding conductor. If repair or replacement of the

electric cord or plug is necessary, do not connect the

equipment-grounding conductor to a live terminal.

Check with a qualified electrician or service personnel if

the grounding instructions are not completely understood,

or if in doubt as to whether the tool is properly grounded.

Use only 3-wire extension cords that have 3-prong

grounding type plugs and matching 3-conductor

receptacles that accept the tool’s plug, as shown in Fig. A.

Repair or replace damaged or worn cord immediately.

2. Grounded, cord-connected tools intended for use on

a supply circuit having a nominal rating between 150 -

250 volts, inclusive:

If the tool is intended for use on a circuit that has an

outlet that looks like the one illustrated in Fig. A. The tool

will have a grounding plug that looks like the plug

illustrated in Fig. A. Make sure the tool is connected to

an outlet having the same configuration as the plug. No

adapter is available or should be used with this tool. If

the tool must be re-connected for use on a different type

of electric circuit, the re-connection should be made by

qualified service personnel; and after re-connection, the

tool should comply with all local codes and ordinances.

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Delta 31-392 User Manual Page 4

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