Delta 78-955, 78-960 User guide

®

T-SQUARE® 10” OVERARM BLADE

GUARD SYSTEM

Model 78-955 for 28”, 30” and 40” T-Square® Fence Systems

Model 78-960 for 50” and 52” T-Square® Fence System

DATED 02-15-01 PART NO. 1349820

1

INSTRUCTION MANUAL

INTRODUCTION

The Biesemeyer T-Square® Blade Guard System is designed for use on most table saws. The table mount is
designed for use on saws equipped with the Biesemeyer® T-Square® Saw Fence system. The 78-955 and 78­960 are designed for use ONLY on Delta 10” Unisaws, 10” Tilting Arbor Saws and 10” Contractors Saws equipped
with the Biesemeyer

®

30” or 50” capacity T-Square

®

fence system respectively.

OSHA regulations and ANSI standards require that a splitter and anti-kickback device be utilized for through
cutting operations. The 78-955 and 78-960 comply with these regulations.

SAFETY RULES

1. FOR YOUR OWN SAFETY, READ INSTRUCTION
MANUAL BEFORE OPERATING THE BLADE GUARD
SYSTEM. Learn its application and limitations as well as the

specific hazards peculiar to it.

2. ALWAYS WEAR EYE PROTECTION.

3. ALWAYS WEAR SAFETY GLASSES that comply with
ANSI 287.1. Everyday glasses only have impact resistant
lense; they are not safety glasses. Also use face sheild or
dust mask if cutting operation is dusty.

4. KEEP WORK AREA CLEAN. Cluttered areas and benches
invite accidents

5. KEEP CHILDREN AND VISITORS A WAY . All children and
visitors should be kept at a safe distance from the work area.

6. USE RECOMMENDED ACCESSORIES. The use of ac­cessories and attachments not recommended by Delta may
cause hazzards or risks of injury to person.

7. TO PREVENT injury from kickback or blade contact, use
blade guard and splitter whenever the cutting operation per­mits.

8. ALWAYS use a push stick when cutting narrow stock.

9. ALWAYS stay alert and keep hands out of path of saw
blade.

10. DRUGS, ALCOHOL, MEDICATION. DO NOT operate
blade guard while under the influence of drugs, alcohol, or
any medication.

11. WARNING: The dust generated by certain woods and
wood products can be injurious to your health. ALWAYS op­erate machinery in a well ventilated area and provide for
proper dust removal. Use wood dust collection systems when­ever possible.

13. AVOID awkward operations and hand postions where a
sudden slip could cause your hand to move into the cutting
tool.

14. A VOID KICKBACKS (work thrown back towards you) by:

A. Keeping blade sharp
B. Keeping rip fence parallel to saw blade
C. Keeping splitter and anti-kickback fingers

and guard in place and operating.

D. Not releasing the work before it is pushed

all the way past the saw blade.

E. Not ripping work that is twisted, warped
or does not have a straight edge to guide
along the fence.

15. PROVIDE adequete support to the rear and sides of the

saw table for wide or long workpieces.

16. NEVER attempt to free a stalled saw blade without first
turning the saw “OFF.”

17. ALWAYS STOP the saw blade before removing scrap
pieces.

18. NEVER perform layout, assembly or set-up work on the
table while the saw is running.

19. DISCONNECT saw from power source before changing
blades or servicing.

20. NEVER use solvents to clean plastic parts. Solvents could
possibly dissolve or otherwise damage the material. Only a
soft damp cloth should be used to clean plastic parts.

21. SHOULD any part of your blade guard be missing, dam­aged, or fail in any way, replace missing, damaged or failed
parts before resuming operation.

12. ALWAYS use blade guard, splitter and anti-kickback fin­gers for every operation for which it can be used, including
all thru-sawing. Thru-sawing operations are those when the
blade cuts completely through the workpiece as in ripping or
cross-cutting.

22. SAVE THESE INSTRUCTIONS. Refer to them frequently
and use them to instruct others.

2

UNPACKING

Carefully unpack the blade guard and all loose items from the carton. Figures 2, 3, and 4 illustrate all items with
the Blade Guard System.

1 - Blade Guard Basket
Assembly

2 - T-Arm
3 - Guard Mounting Arm

Fig. 2

4 - 1/4-20 x 2-3/4” long
hex head screws (3)

5 - 1/4-20 x 3-3/4” long hex
head screws (3)

6 - 1/4-20 hex nuts (6)
7 - 1/4” flat washers (12)
8 - #8 x 3/4” pan head

screws (4)

Fig. 3

3

Fig. 4

9 - Splitter
10 - 1/4-20 x 5/8” button head

screws (2)
11 - 1/4” bushing (2)
12 - Stud
13 - 5/16-18 x 5/8” button

screws (2)
14 - 5/16” bushings (2)
15 - Splitter mounting bracket
16 - Plate
17 - Knob
18 - Spring
19 - 1/4” flat washer
20 - E-ring

INSTALLATION

1. Clamp the guard mounting bracket (A) Fig. 5 to the
back rail (B) of the fence system, making sure the metal
tab (C) is flush up against the table frame as shown.

2. Mark the location of the six holes, three each to be drilled
into the vertical and horizontal portion of the back rail (B)
Fig. 6, using the holes (D) and (E) in the mounting bracket
as a template.

Fig. 5

3. Remove the mounting bracket (A) Fig. 6, from the back
rail (B) and drill six holes in the back rail using a 9/32” drill
bit.

4

Fig. 6