Delta 46-755X, 46-756 Power Connections, Motor Specifications, Grounding Instructions

POWER CONNECTIONS

A separate electrical circuit should be used for your machines. 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 machine’s plug. Before connecting the machine to the power line, make sure the switch (s) is in the “OFF” position and be sure that the electric current is of the same characteristics as indicated on the machine. All line connections should make good contact. Running on low voltage will damage the machine.

DO NOT EXPOSE THE MACHINE TO RAIN OR OPERATE THE MACHINE IN DAMP LOCATIONS.

MOTOR SPECIFICATIONS

Delta Model 46-745 (115 volt) and Delta Models 46-746 and 46-765X (230 volt) operate on 50/60 HZ alternating cur- rent and provide a no-load spindle speed of 0-3200 RPM. Before connecting your tool to the power source, place the switch in the “OFF” position. NOTE: The specifications on the motor will read “230 volt-3 phase”. This is correct and is accomplished with a high frequency inverter. IMPORTANT: The motor cannot be run without the inverter.

Do not change input voltage. To do so will cause severe damage to the inverter.

GROUNDING INSTRUCTIONS

THIS MACHINE MUST BE GROUNDED WHILE IN USE TO PROTECT THE OPERATOR FROM ELECTRIC SHOCK.

1. All grounded, cord-connected machines:

In the event of a malfunction or breakdown, grounding pro- vides a path of least resistance for electric current to reduce the risk of electric shock. This machine 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 conduc- tor can result in risk of electric shock. The conductor with insulation having an outer surface that is green with or with- out yellow stripes is the equipment-grounding conductor. If repair or replacement of the electric cord or plug is neces- sary, 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 machine is properly grounded.

Use only 3-wire extension cords that have 3-prong grounding type plugs and matching 3-conductor receptacles that accept the machine’s plug, as shown in Fig. A.

Repair or replace damaged or worn cord immediately.

GROUNDED OUTLET BOX

CURRENT

CARRYING

PRONGS

2.Grounded, cord-connected machines intended for use on a supply circuit having a nominal rating less than

150volts:

If the machine is intended for use on a circuit that has an out- let that looks like the one illustrated in Fig. A, the machine will have a grounding plug that looks like the plug illustrated in Fig. A. A temporary adapter, which looks like the adapter illustrated in Fig. B, may be used to connect this plug to a matching 2-conductor receptacle as shown in Fig. B if a properly grounded outlet is not available. The temporary adapter should be used only until a properly grounded outlet can be installed by a qualified electrician. The green-colored rigid ear, lug, and the like, extending from the adapter must be connected to a permanent ground such as a properly grounded outlet box. Whenever the adapter is used, it must be held in place with a metal screw.

NOTE: In Canada, the use of a temporary adapter is not permitted by the Canadian Electric Code.

IN ALL CASES, MAKE CERTAIN THE

RECEPTACLE IN QUESTION IS PROP-

ERLY GROUNDED. IF YOU ARE NOT

SURE, HAVE A QUALIFIED ELECTRI-

CIAN CHECK THE RECEPTACLE.

GROUNDED OUTLET BOX

GROUNDING

MEANS

ADAPTER

GROUNDING BLADE

IS LONGEST OF THE 3 BLADES

Fig. A Fig. B

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