Grizzly G2790 User Manual
UNIVERSAL KNIFE GRINDER
MODEL G2790
INSTRUCTION MANUAL
COPYRIGHT © 1992 BY GRIZZLY INDUSTRIAL, INC.
WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE
OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
REVISED APRIL, 1999. PRINTED IN U.S.A.
-C- G2790 Universal Knife Grinder
Table Of Contents
PAGE
1. SAFETY
SAFETY INSTRUCTIONS FOR POWER TOOLS................................................1-2
ADDITIONAL SAFETY INSTRUCTIONS FOR GRINDERS ....................................3
2. CIRCUIT REQUIREMENTS
110V OPERATION ....................................................................................................4
FUSING ....................................................................................................................4
EXTENSION CORDS ................................................................................................4
GROUNDING ............................................................................................................4
3. INTRODUCTION
COMMENTARY ........................................................................................................5
UNPACKING..............................................................................................................6
PARTS INVENTORY ................................................................................................6
CLEAN UP ................................................................................................................7
SITE CONSIDERATIONS ........................................................................................7
4. ASSEMBLY
WORK PLATE SYSTEM ..........................................................................................8
STATIONARY CLAMPS ........................................................................................8-9
GRINDER CONTROLS GUIDE ................................................................................9
5. OPERATIONS
OVERVIEW..............................................................................................................10
WIDE KNIVES ....................................................................................................10-11
NARROW KNIVES ............................................................................................11-12
OTHER BLADES ....................................................................................................12
6. MAINTENANCE
WHEELDRESSING ................................................................................................13
WHEEL REMOVAL ................................................................................................13
7. CLOSURE ....................................................................................................................14
MACHINE DATA......................................................................................................................15
WARRANTY AND RETURNS..................................................................................................16
PARTS DIAGRAM ..................................................................................................................17
PARTS LIST ............................................................................................................................18
G2790 Universal Knife Grinder -1-
Safety Instructions For Power Tools
SECTION 1: SAFETY
5. KEEP CHILDREN AND VISITORS
AWAY. All children and visitors should be
kept a safe distance from work area.
6. MAKE WORK SHOP CHILD PROOF with
padlocks, master switches, or by removing
starter keys.
7. DON’T FORCE TOOL. It will do the job
better and safer at the rate for which it was
designed.
8. USE RIGHT TOOL. Don’t force tool or
attachment to do a job for which it was not
designed.
1. KEEP GUARDS IN PLACE and in working
order.
2. REMOVE ADJUSTING KEYS AND
WRENCHES. Form habit of checking to
see that keys and adjusting wrenches are
removed from tool before turning on.
3. KEEP WORK AREA CLEAN. Cluttered
areas and benches invite accidents.
4. DON’T USE IN DANGEROUS ENVIRONMENT. Don’t use power tools in damp or
wet locations, or where any flammable or
noxious fumes may exist. Keep work area
well lighted.
For Your Own Safety Read Instruction
Manual Before Operating This Equipment
Indicates an imminently hazardous situation which, if not
avoided, WILL
result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, COULD
result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, MAY
result in minor or moderate injury. It may also
be used to alert against unsafe practices.
This symbol is used to alert the user to useful information
about proper operation of the equipment.
The purpose of safety symbols is to attract your attention to possible hazardous conditions.
This manual uses a series of symbols and signal words which are intended to convey the level
of importance of the safety messages. The progression of symbols is described below.
Remember that safety messages by themselves do not eliminate danger and are not a substitute for proper accident prevention measures.
NOTICE
-2- G2790 Universal Knife Grinder
9. USE PROPER EXTENSION CORD. Make
sure your extension cord is in good condition. Conductor size should be in accordance with the chart below. The amperage
rating should be listed on the motor or tool
nameplate. An undersized cord will cause a
drop in line voltage resulting in loss of
power and overheating. Your extension
cord must also contain a ground wire and
plug pin. Always repair or replace extension cords if they become damaged.
Minimum Gauge for Extension Cords
10. WEAR PROPER APPAREL. Do not wear
loose clothing, gloves, neckties, rings,
bracelets, or other jewelry which may get
caught in moving parts. Non-slip footwear
is recommended. Wear protective hair covering to contain long hair.
11. ALWAYS USE SAFETY GLASSES. Also
use face or dust mask if cutting operation is
dusty. Everyday eyeglasses only have
impact resistant lenses, they are NOT safety glasses.
12. SECURE WORK. Use clamps or a vise to
hold work when practical. It’s safer than
using your hand and frees both hands to
operate tool.
LENGTH
AMP RATING 25ft 50ft 100ft
0-6 18 16 16
7-10 18 16 14
11-12 16 16 14
13-16 14 12 12
17-20 12 12 10
21-30 10 10 No
Safety Instructions For Power Tools
13. DON’T OVERREACH. Keep proper foot-
ing and balance at all times.
14. MAINTAIN TOOLS WITH CARE. Keep
tools sharp and clean for best and safest
performance. Follow instructions for lubricating and changing accessories.
15. DISCONNECT TOOLS before servicing
and changing accessories, such as blades,
bits, cutters, and the like.
16. REDUCE THE RISK OF UNINTENTIONAL STARTING. Make sure switch is in off
position before plugging in.
17. USE RECOMMENDED ACCESSORIES.
Consult the owner’s manual for recommended accessories. The use of improper
accessories may cause risk of injury.
18. CHECK DAMAGED PARTS. Before fur-
ther use of the tool, a guard or other part
that is damaged should be carefully
checked to determine that it will operate
properly and perform its intended function.
Check for alignment of moving parts, binding of moving parts, breakage of parts,
mounting, and any other conditions that
may affect its operation. A guard or other
part that is damaged should be properly
repaired or replaced.
19. NEVER LEAVE TOOL RUNNING UNATTENDED. TURN POWER OFF. Don’t
leave tool until it comes to a complete stop.
G2790 Universal Knife Grinder -3-
Additional Safety Instructions For Grinders
No list of safety guidelines can be complete. Every shop environment is different.
Always consider safety first, as it applies to
your individual working conditions. Use
this and other machinery with caution and
respect. Failure to do so could result in
serious personal injury, damage to equipment or poor work results.
1. Wear a face shield and/or safety goggles.
2. Use clamps and supports to sharpen
tools.
3. Grinding creates sparks. Make sure
your work area is free of combustible
materials.
4. Dress the grinding wheel when its surface becomes rutted or uneven. Replace
the wheel if the wear or damage
becomes excessive.
5. Do not use a wheel that is cracked or
chipped.
6. Be sure the grinder is mounted on a stable surface.
7. If you are unclear about operating the
machine, don’t do it. Please call our service department if you have questions
about any element of this machine’s
operation.
8. Use care when handling sharpened cutting tools.
Operating this equipment has the potential
for flying debris to cause eye injury. Always
wear safety glasses or goggles when operating equipment. Everyday glasses or reading glasses only have impact resistant
lenses, they are not safety glasses. Be certain the safety glasses you wear meet the
appropriate standards of the American
National Standards Institute (ANSI).
Like all power tools, there is danger associated with the Model G2790 Universal Knife
Grinder. Accidents are frequently caused
by lack of familiarity or failure to pay attention. Use this tool with respect and caution
to lessen the possibility of operator injury. If
normal safety precautions are overlooked
or ignored serious personal injury may
occur.
-4- G2790 Universal Knife Grinder
110V Operation
SECTION 2: CIRCUIT REQUIREMENTS
A 15-amp fuse or circuit breaker should be used
when fusing the universal knife grinder. Circuits
rated any higher are not adequate to protect the
motor from power surges.
Equipment returned to us for service that shows
evidence of being over-fused will be repaired or
replaced totally at the customer’s expense,
regardless of the present warranty status.
Fusing
If you find it necessary to use an extension cord
with the Model G2790, make sure the cord is
rated Hard Service (grade S) or better. Refer to
the chart in the standard safety instructions to
determine the minimum gauge for the extension
cord. The extension cord must also contain a
ground wire and plug pin. Always repair or
replace extension cords when they become worn
or damaged.
Extension Cords
Grounding
This equipment must be grounded. Verify
that any existing electrical outlet and circuit
you intend to plug into is actually grounded. If it is not, it will be necessary to run a
separate 12 A.W.G. copper grounding wire
from the outlet to a known ground. Under
no circumstances should the grounding pin
from any three-pronged plug be removed.
Serious personal injury may occur.
In the event of an electrical short, grounding
reduces the risk of electric shock by providing a
path of least resistance to disperse electric current. This tool is equipped with a power cord having an equipment-grounding conductor. The outlet must be properly installed and grounded in
accordance with all local codes and ordinances.
The Model G2790 is wired for 110/120V, single
phase operation only. The
1
/2 HP, 1720 RPM
motor draws 8 amps. This is not a large load.
However, if you operate the grinder on a circuit
that is already close to capacity, it could overload
that circuit. If an unusual load does not exist and
a power failure still occurs, contact a qualified
electrician or our service department.
Figure 1. Grounded plug configuration.
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