Direct Support Troubleshooting Guide (Continued)

Direct Support Troubleshooting Guide (Continued) - TM-10-4610-232-34_60

Direct Support Troubleshooting Guide (Continued) - TM-10-4610-232-34_62

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 2. Check continuity from TDK1 (terminal 1) to J13T. (a) Repair any loose or damaged wire (para. 2-20). (b) Replace/repair connector J13 if faulty (para. 2-21). (c) Replace TDK1 if the checks done in steps 1 and 2 are okay (para. 2-23). Step 3. Check the air blowdown solenoid valve connector, P28 (REF: Interconnection diagram FO-2, Sheet 14), for damage or loose pins. Repair the connector, if necessary (para. 2-7). Step 4. Check for resistance across pins P28A and P28B of the air blowdown solenoid valve connector. If the multimeter reads infinity or a short circuit, replace the air blowdown solenoid valve (para. 2-48). Van lights do not work. (Ref. Schematic diagram FO-1, sheet 10, schematic lines 1026-1030). Shut down ROWPU and generator. Refer to electrical drawings in Appendix D. Check continuity, point-to-point, from transformer T1(X1) (REF: Interconnection diagram FO-2, Sheet 10) to J12C (REF: Interconnection diagram FO-2, Sheet 9). Repeat the procedure from T1(X2) to connector J10B (REF: Interconnection diagram FO-2, Sheet 9). Check continuity from J13I (REF: Interconnection diagram FO-2, Sheet 9) to J10A. Check continuity from J12G to J13N and from J12H to J13P. (a) Repair any loose or damaged wire (para. 2-20). (b) Replace circuit breakers CB7 or CB10 (REF: Interconnection diagram FO-2, Sheet 8) if open (para. 2-23). (c) Replace/repair connectors J12, J13 or J10 if they are faulty (para. 2-21 ). HEAT TRACE. Heat trace does not work. (Ref. Schematic diagram FO-1, sheet 11, schematic lines 1102-1104). Shut down ROWPU and generator. Refer to electrical drawings in Appendix D. Check continuity, point-to-point, from transformer T2(1D) (REF: Interconnection diagram FO-2, Sheet 10) to the panel connector of the non-operating heat trace. Repeat the procedure from T2(2D) to the panel connector of the non-operating heat trace. (a) Replace/repair the electrical connector, if faulty (para. 2-21). (b) Test switch SS6 (REF: Interconnection diagram FO-2, Sheet 12) and replace if faulty (para. 2-22). (c) Test circuit breaker CB12 (REF: Interconnection diagram FO-2, Sheet 8) and replace if faulty (para. 2-23). (d) Replace relay K27 (REF: Interconnection diagram FO-2, Sheet 8) if the A2 contacts are open (para. 2-23). UTILITY CIRCUITS. Utility receptacle, panel light or control panel receptacle does not work. (Ref. Schematic diagram FO-1, sheet 11, schematic lines 1117-1126). Shut down ROWPU and generator. Refer to electrical drawings in Appendix D. Check continuity, point-to-point, from transformer T2(1C) (REF: Interconnection diagram FO-2, Sheet 10) to the non-working receptacle or panel light connections. Repeat the procedure from T2(2C) to the non-working receptacle or panel light connections. (a) Repair any loose or damaged wire (para. 2-20). (b) Replace/repair any electrical connector which is damaged (para. 2-21 ). (c) Replace SR9 (REF: Interconnection diagram FO-2, Sheet 13) receptacle if it is not working (para. 2-24). (d) Replace the panel light receptacle, if faulty (para. 4-29 of -12 manual). (e) Replace the panel light switch PB10 (REF: Interconnection diagram FO-2, Sheet 12), if faulty (para. 2-22). (f) Replace relay K27 (REF: Interconnection diagram FO-2, Sheet 8) if it shows open across the A2 contacts (para. 2-23). 2-40 Change 1

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