Microsoft Word - Document10

ESU    
Repair  and    
Troubleshooting  
Flowchart        




Description  #   Textbox   Explanation  
1   Start:  ESU  Troubleshooting.   Begin  troubleshooting  process  for  a  work  order  on  ESU.  
2   Is  the  ESU  free  of  any  external  damage/defects?   Check  for  dents,  scratches  and  any  other  noticeable  problems  with  the  cover  or  casing.  
3   Identify  and  replace  damaged  switches,  indicators,  knobs.   The  easiest  damages  to  fix  are  those  on  the  exterior  of   the  device.  See  BTA  skills  on  Mechanical  Casing  and  Mechanical  Attachment.  
4   Clean  device  using  alcohol.   Generally,   a  maximum  of  70%  ethanol   solution  or  clean   water   should   be   used.   See   BTA   skills   on  Mechanical  Cleaning.  
5   Does  the  ESU  turn  on?   Check   for   visible   signs   of   power   reaching   the  device.  Lights,  sounds,  audible  motor  whirring,  etc  are  all  signs  that  the  device  is  receiving  power.  
6   Inspect  AC  adapter  cable  and  pins  for  cuts,  broken  wires,  and  replace  if  necessary.   See   flowchart   for   troubleshooting   Power   Supply,  and   se   BTA   skills   on   Power   Supply   and   Electrical  Simple.  
7   Identify  and  replace  blown  fuse.   See   flowchart   for   troubleshooting   Power   Supply,  and   se   BTA   skills   on   Power   Supply   and   Electrical  Simple.  
8   Troubleshoot  power  supply.   See   flowchart   for   troubleshooting   Power   Supply,  and   se   BTA   skills   on   Power   Supply   and   Electrical  Simple.  
9   Is   the   device   free   from   any   alarm   sound   or   the  device  doesn’t  turn  off  by  itself  when  in  use?   Alarms  and  sudden  power  loss  are  indications  that  the  device  is  functioning  improperly.    
10   Ensure   proper   placement   of   ground   electrode   on  patient.    
11   Ensure  low  patient  impedance.    
12   Inspect   cable   connecting   the   ground   electrode   to  ESU  for  cuts,  broken  wires,  damage  and  replace  if  necessary.  


See   BTA   skills   on   Power   Supply   Plug/Cable   and  Electrical  Connections  Simple  
13   Test  ESU  using  a  piece  of  meat.   Power   device   as   normal,   attach   electrode   to   one  side  of  a  piece  of  raw  meat  and  touch  ESU  pencil  to  the  meat.  




14   Are  there  no  cuts  on  the  meat?   Burn   marks   or   cuts   underneath   the   pencil   and  return   electrode   are   signs   that   the   device   is  functioning.   Lack   of   these   marks   mean   that   the  electrodes  are  not  being  charged  properly  
15   Perform  preventative  maintenance  on  ESU.  Return  ESU  to  clinical  personnel.   Device  is  ready  for  use.  
16   Does  the  device  use  monopolar  electrodes?   Monopolar  electrodes  are  used  when  the  generator  of   the   device   sends   a   current   from   one   electrode,  through   tissue,   and   to   the  other.  When   the  device  uses  and  ESU  pencil  and  a   large,   flat,  metal  return  electrode,  the  device  uses  monopolar  electrodes.  
17   Are  the  bipolar  electrodes  properly  insulated?   Bipolar  electrodes  are  both  contained   in  the  tip  of  the   ESU   pencil   and   they   pass   current   between  them  on  a  much  smaller   scale.  The  exterior  of   the  bipolar   electrodes   must   be   insulated   to   localize  energy   and   current   transfer   between   the  electrodes.  
18   Ensure   proper   insulation   between   the   two   active  (bipolar)  electrodes.    
19   Does  the  return  electrode  have  two  sections?   Is   the   face  of   the   return  electrode   segmented   into  two  sections?  
20   Is  the  return  electrode  free  from  any  short  circuits  between  the  two  sections?   Use   a   multimeter   to   measure   the   resistance   or  voltage   drop   between   the   two   sections.   See   BTA  skills  on  Electrical  Simple.  
21   Replace  return  electrode  if  necessary.   This   step   would   require   a   readily   available  replacement  part  or  the  device  cannot  function.  
22   Go  to  step  24.   Proceed  to  step  24.  
23   Is  the  return  electrode  flat?   The   return   electrode   must   be   flat   in   order   to  function  properly.  
24   Is   the   footswitch  pedal  properly  connected  to   the  device?   See   BTA   skills   for   Mechanical   Attachment   and  Mechanical  Casing.  
25   Inspect   for   cuts,   broken   wires   in   the   cable   and  replace  if  necessary.   See  BTA  skills  for  Electrical  Connections.  
26   Is  the  ESU  pencil  free  of  any  damage/defects?   The  ESU  pencil   is  a  small  metal  electrode.  Visually  and  tactilely  scan  it  for  obvious  damage.  
27   Inspect   pencil   cable   and   connectors   for   cuts,  broken  wires  and  replace  if  necessary.   See   BTA   skills   for   Electrical   Connections   and  Electrical  Connectors.  




28   Replace  pencil  tip  if  disposable.   This   step   hinges   on   the   assumption   that   tips   are  readily  available.  
29   Device  is  ready  for  use.   Device  is  ready  for  use.  
   




Copyright 2016, Engineering World Health