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Direct Support Troubleshooting Guide (Continued) - TM-10-4610-232-34_70
Direct Support Troubleshooting Guide (Continued) - TM-10-4610-232-34_72

TM-10-4610-232-34 Water Purification Unit Reverse Osmosis 3 000 GPH Trailer Mounted Flatbed Cargo 22-1/2 Ton 8 Wheel Tandem Model No. WTA-060 Manual
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TM  10-4610-232-34 Table  2-1.  Direct  Support  Troubleshooting  Guide  (Continued) MALFUNCTION TEST  OR  INSPECTION CORRECTIVE   ACTION (a)  If  the  outer  pointers  do  not  read  as  listed  above,  adjust  them  by  turning  the  time  adjustment  knob  to the  correct  setting. (b)  If  the  inner  pointer  on  any  timer  does  not  match  the  outer  pointer,  replace  that  timer  (para.  2-22). 7. Backwash cycle phase 1 (drain down). (Ref. schematic diagram FO-1, sheet 8, schematic lines 802-804 and schematic diagram FO-1, sheet 7, schematic lines 702-706). Step 1. Open the media filter vent valve and start the raw water pump in system “NORMAL”. Run the pump until the Step 2. Step 3. Step 4. Step  5. Step 6. Step 7. Step 8. media  filter  is  full  of  water,  Turn  off  the  raw  water  pump,  disconnect  connector  J48  (REF:  Interconnection diagram FO-2, Sheet 15) from the filter flush valve, initiate filter “BACKWASH”, and open the media filter top drain valve. Check for 110-120 VAC across pins J48D and J48E. If  voltage  is  present,  close  the  media  filter  drain  valve  (make  sure  the  filter  is  full  of  water,  as  described above, first) and go to step 3. Reconnect J48 and watch the operating stem on the filter flush valve. It should be in. (a)  If  the  stem  is  not  in,  refer  to  media  filter  flush  valve  troubleshooting. (b) If the stem is in, close the media filter drain valve. Make sure the media filter is full of water as described . above and go to step 9. Shut  down  the  ROWPU  and  open  the  control  panel.  Restore  power  to  the  control  panel.  Turn  off  the  raw water  pump  circuit  breaker  CB4  and  the  boost  pump  circuit  breaker  CB5  (REF:  Interconnection  diagram FO-2,  Sheet  10).  Disconnect  the  backwash  chlorine  pump,  connector  J45  (REF:  Interconnection  diagram FO-2,  Sheet  15).  Set  the  control  panel  up  in  system  “BACKWASH”  and  push  "INITIATE".  Check  that  the indicating  plunger  on  relay  K2  (REF:  Interconnection  diagram  FO-2,  Sheet  6)  is  in. If  the  plunger  on  K2  is  not  in,  refer  to  operation  mode  circuit  troubleshooting. Shut   down   ROWPU   and   generator.   Refer   to   electrical   drawings   in   Appendix   E   and   check   continuity, point-to-point,   from   CB9   (REF:   interconnection   diagram   FO-2,   Sheet   8)   (wire   #264)   to   relay   K2(C1X), schematic  line  702.  Depress  the  indicating  plunger  on  K2  when  checking  its  B3Y/B3X  contact.  Push  PB16 (REF: Interconnection diagram FO-2, Sheet 12) during testing to make sure its contact is open in one position and closed in the other. (a)  Repair  any  loose  or  damaged  wires  (para.  2-20). (b)  Replace  relay  K2  if  its  B3Y/B3X  contact  is  open  with  the  plunger  out  or  if  it  is  closed  with  plunger  in (para. 2-23). (c)  Replace  PB16  if  it  is  closed  in  both  switch  positions  or  open  in  both  positions  (para.  2-22). Check  continuity,  point-to-point,  from  CB9  (wire  #264)  to  J14B  (REF:  Interconnection  diagram  FO-2,  Sheet 9).  Depress  the  indicating  plunger  on  K3  (REF:  Interconnection  diagram  FO-2,  Sheet  6)  when  testing  its contact. (a)  Repair  any  loose  or  damaged  wire  (para.  2-20). (b) Replace relay K3 if its C1Y/C1X contact is open with the plunger in or closed with plunger out (para. 2-23). (c)  Replace/repair  connector  J14  if  faulty  (para.  2-21). Check  continuity,  point-to-point,  from  CB9  (wire  #264)  to  relay  K15(B4X)  (REF:  Interconnection  diagram FO-2,  Sheet  7).  Depress  the  indicating  plunger  on  K2  when  testing  its  contact. (a)  Repair  any  loose  or  damaged  wire  (para.  2-20). (b) Replace relay K2 if its B4Y/B4X contact is open with the plunger in or if it is closed with the plunger out (para.  2-23). Check  continuity,  point-to-point,  from  relay  K15(B4X)  to  connector  J14B.  Depress  the  indicating  plunger  on relay  K11  (REF:  Interconnection  diagram  FO-2,  Sheet  6)  when  testing  its  contact. (a)  Repair  any  loose  or  damaged  wire  (para.  2-20). (b) Replace relay K11 if its contact is closed with the plunger out or open with the plunger in (para. 2-23). Check continuity, point-to-point, from CB9 (wire #264) to J14B. (Schematic line 706.) Depress the indicating plunger  on  MS8-1M  (REF:  Interconnection  diagram  FO-2,  Sheet  10)  when  testing  its  contact. (a)  Repair  any  loose  or  damaged  wire  (para.  2-20). 2-50 Change 1







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