
CAT851XLR rev 04/25/18
Drain Daily
RegulatorOilerQuick CouplerLeader
Hose
Nipple
Do Not Install
Quick Coupling
Here
Nipple
Filter
Air Supply
Whip Hose
AIR SUPPLY
Tools operate on a wide range of air pressures. It is required that
air pressure measures 90 psig at the tool with the trigger fully
depressed and no load applied to the tool. Higher pressure (over 90
psig; 6.2 bar) raises performance beyond the rated capacity of the
tool, which will shorten tool life 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 water from air lines
and compressor prior to running tool. Clean the air inlet filter screen
weekly. 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.
Ensure an accessible emergency shut off valve has been installed in
the air supply line and make others aware of its location.
LUBRICATION
Lubricate the air motor daily with high 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
Let the tool do the work. Do not put extreme pressure on the tool.
This will only slow down the speed of the cutting wheel, reduce cut-
ting efficiency, and put an additional burden on the motor. Start the
tool off the work, set it down on the work evenly and move in the
direction desired to make the cut.
When finished cutting, lift off the work before stopping the motor.
Always use the required wheel guard to prevent injury from broken
cut-off 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 cut-off wheel and the
operator. Use barriers to protect others from wheel fragments and
cutting sparks.
Always wear impact-safety eye and face protection to guard
against flying debris (users and bystanders). Use only wheels
rated at 14,000 RPM or higher. Even small projectiles can injure
eyes and cause blindness. A cut-off wheel that breaks can cause
very serious injury. Daily measure the tool speed with a tachometer
to make sure the speed is not greater than the RPM marked on the
cut-off wheel. Never use a cut-off wheel marked with a speed
lower than the tool speed.
NOTE: Before using, test cut-off wheel by briefly running the tool at
full throttle, under a barrier (such as a heavy work table) to stop any
possible broken wheel parts.
NOTE: Always shut off air supply, drain hose of air pressure and
disconnect tool from air supply when not in use, before changing
accessories or when making repairs.
Correct cut-off wheel mounting is necessary to prevent injury from
broken wheels. Do not use chipped or cracked cut-off wheels. Cut-off
wheels should be a free fit on the spindle to prevent stress at the hole.
Use only wheel collars that come with the tool for mounting the cut-
off wheel. Flat washers or other adapters may over stress the wheel.
Tighten the wheel on the spindle to prevent spin off when the tool is
turned off.
When using the cut-off tool, be careful not to exert excessive force.
Too much force could be hazardous if it causes the tool spindle to bend
or break. The burning of the work piece or excessive speed reduction
indicates too much force being applied. Start the tool off the work, set
it down on the work evenly and move in the direction desired to make
the cut. When finished cutting, lift off the work before stopping the
motor.
TROUBLESHOOTING
Other factors outside the tool may cause loss of power or erratic
action. Reduced compressor output, excessive drain on the air line,
moisture or restrictions in air pipes or the use of hose connections
of improper size or poor conditions may reduce air supply. Grit or
gum deposits in the tool may cut power and may be corrected
by cleaning the air strainer and flushing out the tool with gum
solvent oil or an equal mixture of SAE #10 and kerosene. If outside
conditions are in order, disconnect tool from hose and take tool to
your nearest authorized service center.
WARRANTY
Cornwell Quality Tools Company (“Cornwell”) warrants this product against defects in material and workmanship for a period of ONE (1) YEAR from the date of original retail purchase.
Subject to the conditions and limitations set forth below, Cornwell will, at its option, either repair or replace any part of the product(s) that proves defective by reason of improper
workmanship or materials.
This warranty does not cover any damage to this product that results from accident, abuse, misuse, natural or personal disaster, or any unauthorized disassembly, repair, or
modification. Repairs, disassembly and modification are only authorized to be made by Cornwell or a Cornwell Authorized Warranty Center.
WARRANTY SERVICE
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.
EXCLUSIONS AND LIMITATIONS
THIS WARRANTY AND THE REMEDIES SET FORTH ABOVE ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES, REMEDIES AND CONDITIONS, WHETHER ORAL OR WRITTEN,
EXPRESS OR IMPLIED. CORNWELL SPECIFICALLY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES, INCLUDING, TO THE EXTENT PERMITTED BY APPLICABLE LAW, ANY WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IF CORNWELL CANNOT LAWFULLY DISCLAIM IMPLIED WARRANTIES UNDER THIS LIMITED WARRANTY, ALL SUCH
IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE DURATION OF THIS WARRANTY.
IN NO EVENT SHALL CORNWELL BE LIABLE TO THE PURCHASER OR TO THE USER OF A CORNWELL PRODUCT FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES BASED
UPON BREACH OF WARRANTY, BREACH OF CONTRACT, NEGLIGENCE, TORT, OR ANY OTHER LEGAL THEORY. SUCH DAMAGES INCLUDE, WITHOUT LIMITATION, EXPENSES, LOST
REVENUES, LOST SAVINGS, LOST PROFITS, OR ANY OTHER INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING FROM THE PURCHASE, USE OR INABILITY TO USE THE CORNWELL
PRODUCT.
Some states do not allow the exclusion or limitation of incidental or consequential damages or exclusions or limitation on the duration of implied warranties or conditions, so the above
limitations or exclusions may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary by state.
Repair kits and replacement parts are available for many Cornwell products, regardless of whether or not the product is still covered by a warranty plan.