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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.

Fig. A

Fig. B

GROUNDED OUTLET BOX

CURRENT

CARRYING

PRONGS

GROUNDING BLADE
IS LONGEST OF THE 3 BLADES

GROUNDED OUTLET BOX

GROUNDING

MEANS

ADAPTER

2. Grounded, cord-connected machines intended for
use on a supply circuit having a nominal rating less
than 150 volts:

If the machine is intended for use on a circuit that has an
outlet 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 THAT THE

RECEPTACLE IN QUESTION IS PROPERLY
GROUNDED. IF YOU ARE NOT SURE,
HAVE A QUALIFIED ELECTRICIAN CHECK
THE RECEPTACLE.

1. All grounded, cord-connected machines: 

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 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
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
t h e g r o u n d i n g i n s t r u c t i o n s a r e n o t c o m p l e t e l y
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.

POWER CONNECTIONS

MOTOR SPECIFICATIONS

Your machine is wired for 120V, 60 HZ alternating current. Before connecting the machine to the power source, make
sure the switch is in the “OFF” position. 

GROUNDING INSTRUCTIONS

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

Summary of Contents for 8" VARIABLE SPEED GRINDER GR450

Page 1: ...PART NO 908944 06 30 04 Copyright 2004 Delta Machinery To learn more about DELTA MACHINERY visit our website at www deltamachinery com For Parts Service Warranty or other Assistance please call 1 800...

Page 2: ...ERSTAND ALL WARNINGS AND OPERATING INSTRUCTIONS BEFORE USING THIS EQUIPMENT Failure to follow all instructions listed below may result in electric shock fire and or serious personal injury or property...

Page 3: ...Tools scrap pieces and other debris can be thrown at high speed causing injury 12 USE THE RIGHT MACHINE Don t force a machine or an attachment to do a job for which it was not designed Damage to the...

Page 4: ...E with the workpiece against the grinding wheel The workpiece can be drawn into the wheel causing damage to the machine and or serious injury 16 CLEAN THE MACHINE thoroughly when processing different...

Page 5: ...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 THAT THE RECEPTACLE IN QUESTION IS PROPERLY GROUNDED IF YOU A...

Page 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...

Page 7: ...park Guard 9 Tool Rest Arm 2 10 Tool Rest 2 11 Eye Shield Knob 2 12 1 4 Flat Washer 4 13 1 4 20x1 4 Hex Head Screw 2 14 3 4 Flat Washer 4 15 5 16 18x5 8 Hex Head Screw 4 16 5 16 Lockwasher 2 17 5 16 1...

Page 8: ...ng maximum support to the workpiece Maintain a distance of 1 8 or less between the grinding wheel and the inside edge of the tool rest Adjust the tool rest when the grinding wheel wears down When the...

Page 9: ...using fasteners not supplied through the two holes A Fig 7 in the grinder base The on off switch A Fig 8 is located on the front of the Grinder To turn the machine ON lift the switch to the ON positio...

Page 10: ...A Fig 10 Fig 11 VARIABLE SPEED CONTROL FLEXIBLE LAMP GRINDING WHEELS To reduce the risk of fire use 40 watt or smaller 120 volt reflector track type light bulb not supplied A stan dard household ligh...

Page 11: ...ove the arbor nut wheel flange and old grinding wheel 6 Place the new grinding wheel on the arbor NOTE Grinding wheel must be 1 wide 7 Place the flange on the arbor and thread the arbor nut on the arb...

Page 12: ...eel flange D Fig 20 on the shaft 7 Thread the arbor nut E Fig 21 on the arbor until the arbor nut makes contact with the arbor flange 8 Push the arbor nut wings out to the closed position flat against...

Page 13: ...Delta have not been tested with this product use of such accessories could be hazardous For safest operation only Delta recommended accessories should be used with this product PARTS SERVICE OR WARRA...

Page 14: ...days Delta may require that electric motors be returned prepaid to a motor manufacturer s authorized station for inspection and repair or replacement Delta will not be responsible for any asserted def...

Page 15: ...elta m s cercano ARIZONA Tempe 85282 Phoenix 2400 West Southern Avenue Suite 105 Phone 602 437 1200 Fax 602 437 2200 CALIFORNIA Ontario 91761 Los Angeles 3949A East Guasti Road Phone 909 390 5555 Fax...

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