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CAT4280A / CAT4280GA 

3/26/21

FAILURE TO OBSERVE THESE WARNINGS COULD RESULT IN INJURY

THIS  INSTRUCTION  MAN U AL  CON TAINS   

IM POR TANT  SAFE TY  INFORMATION.
READ  THIS  IN STRUC TION  MANUAL  CARE FUL LY   

AND  UN DER STAND  ALL  IN FOR MA TION  BE FORE   

OP ER AT ING  THIS  TOOL.

•  It is the responsibility of the owner to make sure all  
 

personnel read this manual prior to using this air tool.  

 

It is also the responsibility of the air tool owner to keep  

 

this manual intact and in a convenient location for all  

 

to see and read. If the manual or product labels are  

 

lost or not legible, contact Cornwell for replacements.  

 

If the operator is not fluent in English, the product and  

 

safety instructions shall be read to and discussed  

 

with the operator in the operator's native language by  

 

the purchaser/owner or his designee, making sure  

 

that the operator comprehends its contents.

•  Al ways op er ate, in spect and main tain this tool in  
 

ac cor dance  with  Amer i can  Na tion al  Stan dards   

 

In sti tute  Safe ty  Code  of  Por ta ble  Air  Tools  (ANSI   

 

B186.1) and any oth er ap pli ca ble safe ty codes  

 

and  reg u la tions.

•  For  safety,  top  per for mance  and  max i mum  du ra bil i ty   
 

of parts, op er ate this tool at 90 psig: 6.2 bar max air  

 

pres sure with 3/8" di am e ter air sup ply hose.

•  Always  wear  im pact-re sis tant  eye  pro tec tion  when   
 

op er at ing  or  per form ing  main te nance  on  this  tool   

 

(users and bystanders). 

•  Al ways wear hear ing pro tec tion when us ing this tool  
 

(users and bystanders). High sound levels can cause  

 

per ma nent  hear ing  loss.  Use  hear ing  pro tec tion  as   

 

rec om mend ed  by  your  em ploy er  or  OSHA  reg u la tion.

•    Keep  the  tool  in  ef fi cient  op er at ing  con di tion.
•   Operators and main te nance per son nel must be  
 

phys i cal ly able to han dle the bulk, weight and  

 

pow er of this tool.

•  Keep tool out of reach of children.
•  Air un der pres sure can cause se vere in ju ry. Nev er  
 

di rect air at your self or oth ers. Al ways turn off the  

 

air sup ply, drain hose of air pres sure and de tach  

 

tool from air sup ply be fore in stall ing, re mov ing or  

 

ad just ing any ac ces so ry on this tool, or be fore  

 

per form ing any main te nance on this tool. Fail ure  

 

to do so could re sult in in ju ry. 

•  Whip hos es can cause se ri ous in ju ry.  Al ways check
 

for dam aged, frayed or loose hos es and fit tings, and

 

re place  im me di ate ly. 

•  Do not operate a damaged or worn tool. Do not use
 

quick de tach cou plings at tool. See in struc tions for

 

cor rect set-up on page 3.

•  Air powered tools can vi brate during use. Vi bra tion,  
 

re pet i tive  mo tions  or  un com fort able  po si tions  over   

 

ex tend ed pe ri ods of time may be harm ful to your  

 

hands and arms. Dis con tin ue use of tool if dis com fort,  

 

 

tin gling feel ing or pain oc curs. Seek med i cal ad vice  

 

be fore  re sum ing  use.

•   Place the tool on the work before starting the tool.  
 

Do not point or indulge in any horseplay with this tool.

•  Note direction of rotation BEFORE operating this tool.
•  Slip ping, tripping and/or falling while op er at ing air tools  
 

can be a ma jor cause of se ri ous in ju ry or death. Be aware  

 

of ex cess hose left on the walk ing or work sur face.

•  Keep body work ing stance bal anced and firm. Do not  
 

over reach  when  op er at ing  the  tool.

•  Anticipate and be alert for sud den chang es in mo tion  
 

dur ing start up and op er a tion of any pow er tool.

•  Do not carry tool by the hose. Pro tect the hose  
 

from sharp ob jects 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.
•  Impact wrenches are not torque control devices.  
  Fasteners with specific torque requirements must  
  be checked with suitable torque measuring  
  devices after installation with an impact wrench.
•  Do not lu bri cate tools with flam ma ble or vol a tile  
 

liq uids such as ker o sene, die sel or jet fuel.

•  This tool is not insulated against electric shock.
•  This tool must not be used in explosive atmospheres.
•  Do not force tool be yond its rat ed capacity.

  Use only impact sockets and accessories on this  

  tool. Do not use hand and/or chrome sockets and

 accessories.

• 

Use accessories recommended by Cornwell Tools.

•  Servicing and repairs should only be made by an
 

authorized service center.

•  Do not use (or modify) the tool for any other  
 

purpose than that for which it was designed  

 

without consulting the manufacturer's authorized  

 representative.
•  Do not remove any labels. Re place any damaged la bels.
•  Failure to heed these warnings may result in serious or  

 

 

fatal personal injury and/or property damage.

WARNING:

 This product can expose you to 

chemicals including nickel, which is known to the 

State of California to cause cancer and birth defects 

or other reproductive harm.  For more information 

go to www.P65Warnings.ca.gov.

CAT4280A / CAT4280GA

bluePOWER

®

 1/2" PUSH-BUTTON IMPACT WRENCH/ 

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®

 1/2" PUSH-BUTTON IMPACT WRENCH - GREEN

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