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JAT-821 Pneumatic Flux Chipper 

 

Air system requirements 

1. 

Use  proper  air  hose  size  (refer  to  tool 
specifications). The hose should be just long 
enough to serve the working area. Excessive 
hose length will cause pressure drop.  

2. 

Make  sure  air  compressor  supplies  clean, 
dry air at correct CFM for the tool. 

3. 

Set air pressure to 90 psi.  

 

Excess  air  pressure 

and/or unclean air will shorten the tool’s 
life and may create a hazardous situation. 

4. 

Drain water from air compressor tank daily, 
as  well  as  any  condensation  from  air  lines. 
Water in the air line may enter the tool and 
cause damage. 

5. 

Change filters on the air system on a regular 
basis. 

6. 

Air-line  pressure  may  be  increased 
accordingly to compensate for extra-long air 
hoses (usually over 25 feet). Inside diameter 
of hose should be minimum 3/8-inch. 

General Air Tool 
Information 

If  the  air  tool  is  not  performing  according  to 
specifications, the following are among the most 
common  causes.  (See  also  “Troubleshooting” 
section.) 

 

Contaminated air such as a dirty air system 
or water in the system. 

 

Using wrong size tool for the job. 

 

Poor maintenance  practices, such  as  using 
excessive air pressure or air volume. 

 

Improper or no lubrication. 

Rule of Thumb 

If it takes more than 8 seconds to tighten or loosen 
a  bolt  or  nut  with  an  air  impact  wrench  at 
maximum  setting,  the  air  wrench  is too  small  or 
the  air compressor  CFM  is  not  powerful  enough 

for  the  job.  Continued  use  in  either  capacity  will 
cause damage to the tool.  

Tool Pressure 

JET  Air Tools  operate  on  70-to-100  psi  (pounds 
per square inch) air pressure measured at the tool 
when  the  tool  is  operating.  Set  tool  to  90  psi 
unless indicated otherwise. Pressure in excess of 
100 psi will shorten the life of the tool. 

Air System Recommendations 

Equip  the  air  compressor  intake  with  a 
replaceable air filter that can be easily cleaned. 

Use  safety  shut-off  valves  so  air  flow  can  be 
stopped quickly in case of a line break. 

When using multiple hoses, air hoses should be 
larger  than  leader  hose.  Join  multiple  hoses 
directly,  rather  than  with  quick  connect  fittings 
which may cause pressure drops and tool power 
reduction. 

Use  anti-whip  devices  across  hose  couplings  to 
prevent hose from whipping in the event of a hose 
failure or coupling disconnect. 

Always use moisture traps at the compressor for 
the main distribution line. Use moisture traps and 
in-line oilers on each downline that is to be used 
for air tools. (See Figure 2). Place oiler as close to 
air tool as possible for best lubrication. 

Lubrication 

Use a light oil containing rust inhibitors, such as 
SAE  #10.  Many  JET  air  tools  have  integral  oil 
reservoirs, which should be kept filled when in-line 
oilers are not used. 

If greasing is required, use a grease that is highly 
water resistant for front  case  components  on  air 
impact wrenches, grinders and sanders. 

Recycling 

Protect  the  environment.  Your  tool  contains 
materials  which  can  be  recovered  or  recycled. 
When its useful life has expired, please leave tool 
at a specialized facility. 

 
 

Summary of Contents for JAT-821

Page 1: ...Pneumatic Flux Chipper 505821 JAT 821 Operation Parts Manual M 505821 Edition 3 11 2018 JET 427 New Sanford Road LaVergne TN 37086 Ph 800 274 6848 www jettools com Copyright 2015 JET ...

Page 2: ... with any additional action needed JET has Authorized Service Centers located throughout the United States For the name of an Authorized Service Center in your area call 1 800 274 6846 or use the Service Center Locator on the JET website More Information JET is constantly adding new products For complete up to date product information check with your local distributor or visit the JET website How ...

Page 3: ...p against the work surface 11 Do not operate air tool without its guards in place Do not modify the tool 12 Do not operate this tool while tired or under the influence of drugs alcohol or any medication 13 Adopt a comfortable posture with proper balance and maintain secure footing at all times Non slip footwear or anti skid floor strips are recommended 14 Do not wear loose clothing or jewelry Conf...

Page 4: ...s that are designed for use with a flux chipper 37 Use both hands to operate chipper Keep hands away from chisel area 38 Make sure chisel is secured within the tool An unsecured chisel may be ejected from the tool during operation and cause possible injury 39 Keep chisel tip against work surface Do not use excessive force let the tool do the work 40 If chipper will not remove material from the wor...

Page 5: ...n this document The instructions and warnings in this manual may not encompass all possible workplace environments The operator is expected to take appropriate precautions and exercise common sense As with any tool operation safety of operator and bystanders should be first priority If there are questions or comments please contact your local supplier or JET JET can also be reached at our web site...

Page 6: ... Inline Overall Length 14 1 2 in 368 3 mm Housing material Steel Net weight 4 54 lb 2 06 kg Shipping weight 4 89 lb 2 22 kg 1 The specified values are emission levels and are not necessarily to be seen as safe operating levels As workplace conditions vary this information is intended to allow the user to make a better estimation of the hazards and risks involved only Specifications were current at...

Page 7: ...ose and install any quick change couplings farther down the line 5 Hold flux chipper firmly with both hands and rest chisel tip against work surface 6 Press throttle lever Pressure against throttle lever determines speed of tool Do not exert excessive pressure against work surface let the tool do the work 7 Release throttle lever to stop flux chipper Maintenance Lubrication The flux chipper should...

Page 8: ...r the job Continued use in either capacity will cause damage to the tool Tool Pressure JET Air Tools operate on 70 to 100 psi pounds per square inch air pressure measured at the tool when the tool is operating Set tool to 90 psi unless indicated otherwise Pressure in excess of 100 psi will shorten the life of the tool Air System Recommendations Equip the air compressor intake with a replaceable ai...

Page 9: ...JET 9 Figure 2 Recommended arrangement of air piping and air line system ...

Page 10: ...t lubrication Lubricate with air tool oil according to instructions in this manual Loss of power erratic action Low air pressure Verify compressor has proper CFM rating for tool Check compressor regulator setting set air pressure to 90 psi Check for loose connections Moisture or obstruction in air hose Air supply must be clean and dry Clean out air hose s and remove any kinks or bends Improper siz...

Page 11: ... 8 729538 Spring pin 5x22L 1 9 729747 Hose adaptor 1 10 729597 Lock ring 1 28 730218 Alignment shim 2 29 729608 Rear valve block 1 Index Part No Description Qty 30 1012591 Pin 2 31 729604 Valve 1 32 729606 Front valve block 1 33 730219 Piston 1 35 731008 Barrel sleeve 1 36 731009 Nose 1 37 731010 Key 1 38 730220 Driver retainer 1 39 730221 Retainer buffer 1 40 JAT800 40 Barrel 1 41 730222 Retainer...

Page 12: ...s or reach our service department call 1 800 274 6848 Monday through Friday 8 00 a m to 5 00 p m CST Please have the stock number and serial number of your tool available when you call so that we may serve you quickly and accurately 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com ...

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