CAT355HD
3
rev. 02/05/16
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. If outside conditions are in order, and the
tool still performs erratically, disconnect tool from hose and take tool to your
nearest Cornwell authorized service center.
OPERATION
Locate center of new hole by using a center punch. Place drill bit tip in punch
mark. Hold drill square with work and start motor. Apply steady, even pres sure.
Do not force. Too much pressure can cause bit to break or over heat. Too little
pressure will keep bit from cutting and cause it to overheat. Reduce pres sure
just before bit cuts through the work. When bit has pen e trat ed work and is
spin ning freely, take it from the work while the motor is run ning, then turn off
drill. If the drill jams in the work, release throttle immediately.
Dis con nect the drill before re mov ing bit and de ter min ing cause of
trou ble. Do not attempt to free the bit by starting and stopping the motor.
WARRANTY COVERAGE
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 Au
tho
rized Warranty Center, freight pre
paid. Please include a copy of your
proof of pur chase and a brief de scrip tion of the prob lem. The tool will be inspected and if any part or parts are found to be de fec tive in ma te ri al or
work man ship, they will be re paired free of charge, and the re paired tool will be re turned to you freight pre paid.
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.
Cornwell Quality Tools Company
667 Seville Road • Wadsworth, OH 44281-1094
Figure 2
Air Inlet
Drain Daily
Regulator
Oiler
Quick Coupler
Leader
Hose
Nipple
Do Not Install
Quick Coupling
Here
Nipple
Filter
Air Supply
Whip Hose
AIR SUPPLY
Tools of this class operate on a wide range of air pressures.
It is recommended that air pressure measures 90 psig at the tool with the trig-
ger 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 water from air lines and compressor prior to
running tool daily. 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 pres-
sure 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 emer-
gency shut off valve has been installed in the air supply line and make others
aware of its location.
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.
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.
WARNING
WARNING
