Cornwell Tools CAT-D251 User manual

CAT-D251 1 06/21/07
CAT-D251
Heavy Duty
Industrial
Grinder
Operating Instructions • Warning Information
• Parts Breakdown
ALWAYS READ
INSTRUCTIONS
BEFORE USING
POWER TOOLS
ALWAYS WEAR
SAFETY GOGGLES
WEAR HEARING
PROTECTION
AVOID
PROLONGED
EXPOSURE TO
VIBRATION
Some dust created by power sanding, sawing, grinding, drilling,
and other construction activities contains chemicals known to cause
cancer, birth defects or other reproductive harm. Some examples of
these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry
products, and
• arsenic and chromium from chemically-treated lumber.
Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
work in a well ventilated area, and work with approved safety
equipment, such as those dust masks that are specially designed to
filter out microscopic particles.
Free Speed: . . . . . . . . . . . . . . . . . . . . . . . . 13,500 RPM
AirInlet:............................. 1/4"NPT
Collet Size: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3/8"
Recommended Hose Size:. . . . . . . . . . . . . . . . . .3/8" I.D.
Recommended Air Pressure: . . . . . . . . . . . . . . . . . 90 PSI
Air Consumption: . . . . . . . . . . . . . . . . . . . . . . . .4.3 CFM
Length:..............................11-15/16"
NetWeight:............................3.2lbs.
SPECIFICATIONS
• MAXIMUM RPM OF 13,500
• MAX AIR PRESSURE:
90 PSIG, 6.2 BAR
• RPM OF THE ACCESSORY
MUST EXCEED TOOL RPM
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CAT-D251 2 06/21/07
FAILURE TO OBSERVE THESE WARNINGS COULD RESULT IN INJURY.
THIS INSTRUCTION MANUAL CONTAINS
IMPORTANT SAFETY INFORMATION.
READ THIS INSTRUCTION MANUAL
CAREFULLY AND UNDERSTAND ALL
INFORMATION BEFORE OPERATING
THIS TOOL.
• Always operate, inspect and maintain this
tool in accordance with American National
Standards Institute Safety Code of Portable
Air Tools (ANSI B186.1) and any other
applicable safety codes and regulations.
• For safety, top performance and maximum
durability of parts, operate this tool at 90
psig: 6.2 bar max air pressure with 3/8"
diameter air supply hose.
• Always wear impact-resistant eye and face
protection when operating or performing
maintenance on this tool.
• Always wear hearing protection when
using this tool. High sound levels can
cause permanent hearing loss. Use
hearing protection as recommended by
your employer or OSHA regulation.
• Keep the tool in efficient operating
condition.
• Operators and maintenance personnel must
be physically able to handle the bulk, weight
and power of this tool.
• Air under pressure can cause severe injury.
Never direct air at yourself or others.
Always turn off the air supply, drain hose of
air pressure and detach tool from air supply
before installing, removing or adjusting any
accessory on this tool, or before performing
any maintenance on this tool. Failure to do
so could result in injury. Whip hoses can
cause serious injury. Always check for
damaged, frayed or loose hoses and fittings,
and replace immediately. Do not use quick
detach couplings at tool. See instructions
for correct set-up.
• Air powered tools can vibrate during
use. Vibration, repetitive motions or
uncomfortable positions over extended
periods of time may be harmful to your
hands and arms. Discontinue use of tool
if discomfort, tingling feeling or pain occurs.
Seek medical advice before resuming use.
• Place the tool on the work before starting
the tool.
• Slipping, tripping and/or falling while
operating air tools can be a major cause of
serious injury or death. Be aware of excess
hose left on the walking or work surface.
• Keep body working stance balanced
and firm. Do not overreach when operating
the tool.
• Anticipate and be alert for sudden changes
in motion during start up and operation of
any power tool.
• Do not carry tool by the hose. Protect the
hose from sharp objects and heat.
• Tool shaft may continue to rotate briefly
after throttle is released. Avoid direct
contact with accessories during and after
use. Gloves will reduce the risk of cuts or
burns.
• Keep away from rotating end of tool. Do not
wear jewelry or loose clothing. Secure long
hair. Scalping can occur if hair is not kept
away from tool and accessories. Choking
can occur if neckwear is not kept away
from tool and accessories.
• Correct grinding wheel mounting is
necessary to prevent injury from broken
wheels. Do not use chipped or cracked
grinding wheels. Grinding wheels should be
a free fit on the spindle to prevent stress at
the hole. Use only wheel collars that come
with the grinder for mounting the grinding
wheel. Flat washers or other adapters may
over stress the wheel. Always use heavy
blotter discs between the wheel collars and
the grinding wheel. Tighten the wheel on
the spindle to prevent spin off when the air
grinder is turned off.
• Do not lubricate tools with flammable or
volatile liquids such as kerosene, diesel
or jet fuel.
• Do not force tool beyond its rated capacity.
• Do not remove any labels. Replace any
damaged labels.
• Use accessories recommended by
Cornwell Tools.
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CAT-D251 3 06/21/07
Ref. # Item # DESCRIPTION QTY
1 RS74601W Housing 1
2 RS388402 Throttle Valve Bushing 1
3 RS305A15 O-Ring 2
4 RS26105 O-Ring 2
5 RS70506 Throttle Pin 1
6 RS388406 Spring 1
7 RS70508 Air Regulator 1
8 RS305A09 O-Ring 1
9 RS388409 O-Ring 1
10 RS70511 Valve Plug 1
11 RS74611 Safety Throttle Lever 1
12 RS848002 Pin 1
13 RS388413 Air Inlet 1
14 RS26130 Exhaust Swivel 1
15 RS388415 Silencer 1
16 RS21114 Ball Bearing 1
17 RS388417 Rear End Plate 1
18 RS388418 Roll Pin 2
19 RS74619 Rotor 1
20 RS388420 Rotor Blade 4
21 RS388421 Spacer 1
22 RS388422 Cylinder 1
23 RS388424 Front End Plate (incl. #25) 1
24 RS10920 Ball Bearing 2
25 RS26216 Steel Ball 1
Ref # Item# DESCRIPTION QTY
26 RS705L527 O-Ring 1
27 RS74627 Nose Housing Connector 1
28 RS74628 Lock Nut 1
29 RS74629 O-Ring 1
30 RS74630 Lock Ring 1
31 RS24804 Ball Bearing 2
32 RS74632 Extension Spindle 1
33 RS74633 Ball Bearing 1
34 RS74634 Bevel Gear Shaft 1
35 RS74635 Extension Housing 1
36 RS74636K1 Angle Housing (incl. #37) 1
37 RS74637 Grease Fitting 1
38 RS74638 Needle Bearing 1
39 RS74639 Spindle Nut 1
40 RS74640 Bevel Gear 1
41 RS74641 Spindle 1
42 RS74642 Lock Nut 1
43 RS74643 Upper Retaining Nut 1
44 RS74644 Wheel Retaining Nut 1
45 RS74645 Guard 1
46 RS74646 Hex Screw 1
47 RS74647 Felt Plate 1
48 RS70530 Spanner Wrench (14 & 19mm) 1
49 RS74550 Stop Wrench 1
50 RS21134 4" Grinding Wheel 1
PARTS BREAKDOWN - CAT-D251
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CAT-D251 4 06/21/07
Operating Instructions • Warning Information • Parts Breakdown
Nipple
AIR SUPPLY
Tools of this class operate on a wide range of air pressures.
It is recommended that air pressure of these tools measures
90 PSI at the tool while running free. Higher pressure (over
90 psig; 6.2 bar) raises performance beyond the rated capacity
of the tool, which will shorten tool life because of faster wear
and could cause injury.
Always use clean, dry air. Dust, corrosive fumes and/or water
in the air line will cause damage to the tool. Drain the air
tank daily. Clean the air inlet filter screen on at least a weekly
schedule. The recommended hookup procedure can be viewed
in the above figure.
The air inlet used for connecting air supply has standard
1/4" NPT.
Line pressure should be increased to compensate for unusually
long air hoses (over 25 feet). Minimum hose diameter should
be 3/8" I.D. and fittings should have the same inside
dimensions and be tightly secured.
LUBRICATION
Lubricate the air motor daily with quality air tool oil. If no air
line oiler is used, run 1/2 oz. of oil through the tool. The oil can
be squirted into the tool air inlet or into the hose at the nearest
connection to the air supply, then run the tool. A rust inhibitive
oil is acceptable for air tools.
WARNING: After an air tool has been lubricated, oil will
discharge through the exhaust port during the first few
seconds of operation. The exhaust port must be covered with a
towel before applying air pressure to prevent serious injury.
OPERATION
Always use the recommended wheel guard
to prevent injury from broken grinding
wheel parts. If a guard has withstood a
wheel breakage, discontinue its use and
replace it with a new guard. It may be
damaged. Position the guard between the
grinding wheel and the operator. Use barriers to protect others
from wheel fragments and grinding sparks.
Always wear impact-resistant eye and face
protection when involved in the operation
of this tool. Even small projectiles can injure
eye and cause blindness. A grinding wheel
that bursts can cause very serious injury.
Measure the air grinder speed daily with
a tachometer to make sure it is not greater than the RPM
marked on the grinding wheel. Never use a grinding wheel
marked with a speed lower than the air grinder speed.
Before grinding, test grinding wheel by briefly running the tool
at full throttle. Be sure to use a barrier (such as under a heavy
work table) to stop any possible broken wheel parts.
To Replace Grinding Discs:
1. Use spanner wrench (#48) to hold spindle (#41) in
place. Unscrew wheel retaining nut (#44) using stop
wrench (#49).
2. Remove old grinding disc and replace with new grinding
disc (#50).
3. Screw on wheel retaining nut (#44) with shoulder side
facing tool using stop wrench (#49) and tighten.
WARRANTY
Cornwell warrants its air tools for a period of 1 year to the consumer. We will repair any air tool covered under this warranty which proves
to be defective in material or workmanship during the warranty period. In order to have your tool repaired, return the tool to any Cornwell
Authorized Warranty Center, freight prepaid. Please include a copy of your proof of purchase and a brief description of the problem. The
tool will be inspected and if any part or parts are found to be defective in material or workmanship, they will be repaired free of charge
and the repaired tool will be returned to you freight prepaid.
This warranty gives you specific rights. You may also have other rights which vary from state to state.
The foregoing obligation is Cornwell’s sole liability under this or any implied warranty and under no circumstances shall Cornwell be liable
for any incidental or consequential damages.
Note: Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion
may not apply to you.
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