Panasonic Cordless Impact Wrench EYFPA1J, EYFPA1JR Operating Instructions

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• The  tightening  torque  value  and  preci-sion vary with factors such as the mate-rial  into  which  the  bolt  is  being  driven and  the  condition  of  the  socket  being used.  Adjust  the  torque  as  necessary for the work being performed. Bolt tight-ening  torque  varies  due  to  the  factors described below.1) Bolt
• Bolt  diameter:  Tightening  torque 
gener-ally increases with bolt diam-eter.
•  Torque  coefficient  (indicated  by  the 
bolt  manufacturer),  grade,...

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• After  all  the  LED  lamps  have  turned  off, the  control  panel  will  flash  and  change to configuration mode.
See the illustration13
NOTE:
• Tools  ship  from  the  factory  set  to  “F” 
mode (torque control function off).
•  The  control  panel  will  turn  off  if  the  tool 
is  not  operated  for  a  period  of    min
-utes. 
Configuring  the  torque  clutch 
setting
EYFA31
A
B
C D
(1)
()
Display
Battery indication lamp
1.  Press  the   and   buttons  to...

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Setting  the  snug  point  detec­
tion level
EYFA31
A
B
C D
()
()(1)
1.  Press the A button.
•  The  snug  point  detection  level  setting 
value will be displayed.
Display
Battery indication lamp
.  Press the  and  buttons to set the best snug  point  detection  level  for  the  work you’re performing.
.  Press the OK button to accept the number 
of torque stages and the snug point detec-tion level.
•  The tool’s panel will flash and then light 
up...

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Rundown error detecting func­
tion
• The rundown error detecting function causes a  red  indicator  to  flash  if  work  ends  more quickly  than  a  set  time,  for  example  due to  retightening  of  a  previously  tightened fastener or binding of the screw’s thread.
1.  Set  the  tool  to  setting  configuration  mode. 
(See page 11.)
.  Press the B button twice.
•  The  rundown  error  detecting  function 
setting value will be displayed.
.  Press the 
 and  buttons to...

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Display
Battery indication lamp
. Press the C button again. 
•  Radio  signal  range  limitation  function 
on/off setting value will be displayed.
 
4.  Press  the   and   buttons  to  set  radio signal range limitation function on/off.
DisplayRadio signal range limitation function modeStatus
C0OFF
Tool  is  operational  in  the absence  of  communica-tions  with  the  Assembly Qualifier.
C1ON
Tool  is  not  operational in  the  absence  of  com-munications  with  the...

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Display
Battery indication lamp
. Press  the  OK  button  to  accept  the  select-ed setting. 
•  The  control  panel  will  stop  flashing  and 
light up.
Checking tool settings
•  When  the  tool  stops,  the  current  setting 
value  will  be  displayed  for  approximately   
seconds.
•  The  setting  status  cannot  be  checked  while 
the  tool  panel  is  off.  Depress  the  trigger switch once to turn on the panel.
Checking  the  status  of  the 
torque  clutch  and...

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Error Display
In the event of a tool or battery pack malfunction, the control panel will display an error message. Please  check  the  tool  or  battery  pack  as  described  in  the  following  chart  before  having  them serviced.
DisplayLikely causeCorrective action
Setting errorRe-initialize the tool using the 
remote control. (See page 1.)
The battery pack is too hot.Stop work and allow the battery pack to cool before resuming use of the tool.
The tool is too hot to...

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[Battery Pack]
For Appropriate Use of Bat­
tery Pack
Li­ion Battery Pack
• For optimum battery life, store the Li-ion bat-tery pack following use without charging it.
• When  charging  the  battery  pack,  confirm that  the  terminals  on  the  battery  charger are  free  of  foreign  substances  such  as  dust and  water  etc.  Clean  the  terminals  before charging the battery pack if any foreign sub-stances are found on the terminals.   The  life  of  the  battery  pack...

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Federal  Communications  Commission  Interference 
Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, 
pursuant to part 1 of the FCC Rules. These limits are designed to provide reasonable protection 
against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may  cause  harmful...

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VIII. SPECIFICATIONS
NOTE:Weight indicationGreater than or equal to 1 kg  : indicated by 0.0 kg.Less than 1 kg   : indicated by 0.01 kg.
MAIN UNIT
Model No.EYFPA1
JJR
Motor voltage 1.6 V DC
Chuck sizeSingle-ended□19.0 mm (3/4”)
No load speed 0 – 100
Impact per minute0 – 00
Maximum torque700 N·m
(660 kg f·cm, 614 in·lbs)
Torque control function operating range Approx. 160 – 60 N·m
(16 – 670 kg f·cm, 141 – 7...