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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 THE

R E C E P TA C L E I N Q U E S T I O N I S P R O P E R LY
G R O U N D E D . I F Y O U A R E N O T S U R E H AV E 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 120 volts, 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 (Model 31-300)

Page 1: ...005 Delta Machinery To learn more about DELTA MACHINERY visit our website at www deltamachinery com For Parts Service Warranty or other Assistance please call 1 800 223 7278 In Canada call 1 800 463 3...

Page 2: ...stal Mail Technical Service Manager Delta Machinery 4825 Highway 45 North Jackson TN 38305 IN CANADA 505 SOUTHGATE DRIVE GUELPH ONTARIO N1H 6M7 Information regarding the safe and proper operation of t...

Page 3: ...EMS The symbols below are used to help you recognize this information SAFETY GUIDELINES DEFINITIONS SOME DUST CREATED BY POWER SANDING SAWING GRINDING DRILLING AND OTHER CONSTRUCTION ACTIVITIES contai...

Page 4: ...the machine and or injury may result 13 USE RECOMMENDED ACCESSORIES The use of accessories and attachments not recommended by Delta may cause damage to the machine or injury to the user 14 USE THE PR...

Page 5: ...lip could cause a hand to move into the abrasive disc or belt 12 MAINTAIN A MAXIMUM CLEARANCE OF 1 16 be tween the table and the abrasive disc The workpiece could be drawn into the space between the a...

Page 6: ...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 PROPERLY GROUNDED IF YOU ARE NO...

Page 7: ...NSION CORDS 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 acce...

Page 8: ...Table 5 Motor 6 Knob 2 7 Clamp 2 8 7 16 Washer 2 9 Spring 2 10 Stud 2 11 Handle 1 12 3 8 Washer 1 13 Tension Spring 1 14 3 8 Hex Nut 1 15 3 8 Lock Nut 1 16 Stud 1 1 2 3 4 5 Fig 2 Fig 3 19 NOTICE THE...

Page 9: ...Head Bolt 2 36 Pointer and 10 32 Round Head Screw 37 Sanding Center 21 22 23 24 25 26 29 30 31 32 33 34 35 28 27 37 ASSEMBLY ASSEMBLY TOOLS REQUIRED Phillips Head Screwdriver not supplied 11 16 3 4 an...

Page 10: ...h is shown at D on the hex head bolts Hold the hex head bolts with an 11 16 socket as you tighten Fig 8 A B C D INSTALLING DRIVE BELT AND BELT GUARD DISCONNECT MACHINE FROM POWER SOURCE NOTE MAKE SURE...

Page 11: ...Fig 13B to the hole B on the disc table trunnion clamp 7 Tighten the knob C Fig 13A Fig 12 A B C D D E E Fig 13A A B C ATTACHING DISC TABLE DISCONNECT MACHINE FROM POWER SOURCE 1 Clean the sanding dis...

Page 12: ...down position Fig 16 Fig 17 A A 12 DISCONNECT MACHINE FROM POWER SOURCE 1 Insert the trunnion key A Fig 14 into the slot on the side of the sanding arm B 2 Thread the stud C into the hole D on the sid...

Page 13: ...ing to one side or the other very gently turn the tracking knob E Fig 20 clockwise to move the belt to the right or counterclockwise to move the belt to the left 5 A final adjustment can be made with...

Page 14: ...ig 24 on the table against the belt See if the table is 90 degrees to the belt 3 To adjust loosen the table tilting lock handle A Fig 23 Turn the adjusting screw F in or out until table is 90 degrees...

Page 15: ...1 use the table E or the accessory backstop to support the work Fig 27 Fig 31 Fig 30 1 Position the table A Figs 27 and 28 90 degrees to the belt Place a square B in the miter gauge slot with the blad...

Page 16: ...degrees to the disc 3 To adjust loosen the lock handle A Fig 32 and tighten or loosen the screw F Fig 32 until the table is 90 degrees to the disc 4 The stop F Fig 32 ensures that the table can rapid...

Page 17: ...Fig 39 REPLACING SANDING DISC See ATTACHING SANDING DISC section in this manual DISCONNECT MACHINE FROM POWER SOURCE DISCONNECT MACHINE FROM POWER SOURCE POWER TAKE OFF SHAFT 1 A power take off shaft...

Page 18: ...LT B TO AVOID TRAPPING THE WORKPIECE OR YOUR FINGERS BETWEEN THE TABLE AND THE SANDING BELT Fig 46 SANDING INSIDE CURVES You can sand inside curves on the top sanding drum Fig 46 if you loosen the kno...

Page 19: ...ATION SIDE OF THE SANDING DISC COULD CAUSE THE WORKPIECE TO FLY UP WHICH COULD BE HAZARDOUS THE EDGE OF THE TABLE C FIG 48 MUST BE POSITIONED A MAXIMUM OF 1 16 AWAY FROM THE SANDING DISC B TO AVOID TR...

Page 20: ...r All plastic parts should be cleaned with a soft damp cloth NEVER use solvents to clean plastic parts They could possibly dissolve or otherwise damage the material Wear ANSI Z87 1 safety glasses whil...

Page 21: ...ter or authorized service station with proof of purchase of the product within two years and provides Delta with reasonable opportunity to verify the alleged defect by inspection For all refurbished D...

Page 22: ...22 NOTES...

Page 23: ...23 NOTES...

Page 24: ...F brica Porter Cable Delta m s cercano ARIZONA Phoenix 85013 2906 4501 N 7th Ave Phone 602 279 6414 Fax 602 279 5470 CALIFORNIA Ontario 91761 Los Angeles 3949A East Guasti Road Phone 909 390 5555 Fax...

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