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Direct Support Troubleshooting Guide (Continued) - TM-10-4610-232-34_42
Direct Support Troubleshooting Guide (Continued) - TM-10-4610-232-34_44

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 Step 3. Check continuity, point-to-point, from J11F to K23(K1). Depress the indicating plungers on K6 and K23 when testing continuity across their contacts. (a) Repair any loose or damaged wire (para. 2-20). (b) Replace/repair connector J11 if faulty (para. 2-21). (c) Replace relay K6 (REF: Interconnection diagram FO-2, Sheet 7) or K23 if their set of contacts does not show continuity when the indicating plunger is depressed (para. 2-23). (d) Replace relay K23 if all the above checks have not pin pointed problem (para. 2-23). Strainer high differential light or horn does not work. (Ref. Schematic diagram FO-1, sheet 9, schematic lines 909-910 and schematic diagram FO-1, sheet 10, schematic line 1006). NOTE Refer to malfunctions 7 and 9 for additional troubleshooting. Also, see light test and alarm circuit troubleshooting. . Step 1. Shut down ROWPU and generator. Refer to electrical drawings in Appendix D. Remove the wires from A3X/A3Y and A2X/A2Y on relay K23 (REF: Interconnection diagram FO-2, Sheet 7). Check for continuity across each contact with the indicating plunger of K23 out. Push the indicating plunger in and check that there is no continuity across the contact. Step 2. Check the wires that were removed in step 1 for looseness or damage at their preceding connections. Repair any loose or damaged wires (para. 2-20). Basket strainer light is on and basket strainer is clean or light is not on and strainer is plugged. Test strainer differential switch (PDSH1) for accuracy. Disconnect J24 (REF: Interconnection diagram FO-2, Sheet 14) from the pressure switch panel. Disconnect the pressure sensing lines from the switch. Remove the cover on the switch  and  tag/remove  the  wires  from  the  pressure  switch.  Check  for  internal  water  leakage.  Set  a  multimeter  to  the Ohms x 1 scale and attach the leads to the switch terminals that the wires were on. Connect a dead-weight tester or another known calibrated pressure control device to the switch high pressure (or inlet) port. The multimeter should read zero resistance with no pressure on the inlet pressure port. Slowly apply pressure to the switch. The switch should open on an increasing pressure of 14 to 16 psig. (a) Replace the switch if there is internal leakage (para. 2-27). (b) Adjust the switch to the correct setting if it does not actuate as described above. Remove the adjustment cover and turn the adjuster clockwise to increase the actuation point counterclockwise to lower it (para. 2-29). Replace the switch if it cannot be adjusted (para. 2-27). (c) Check the accuracy of the gauge that Ied to this malfunction if the switch is operating correctly. ~ 10. Media filter high differential switch does not work. (Ref. Schematic diagram FO-1, sheet 9, schematic lines 911-9-12). NOTE This switch is factory set to open at 25 psig. NOTE Refer to malfunctions 11 and 12 for additional troubleshooting. Step  1.  Shutdown  ROWPU  and  generator.  Refer  to  the  electrical  schematic  Appendix  D.  Check  continuity,  point-to- point,  from  J24A  to  J24N  (REF:  Interconnection  diagram  FO-2,  Sheet  14). (a) Repair any loose or damaged wire (para. 2-28). (b) Replace/repair connector J24 if faulty (para. 2-28). (c) Replace PDSH2, if it shows an open circuit (para. 2-27). 2-24 Change  1







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