Direct Support Troubleshootlng Guide (Continued)

Direct Support Troubleshooting Guide (Continued) - TM-10-4610-232-34_32

Direct Support Troubleshooting Guide (Continued) - TM-10-4610-232-34_34

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 Troubleshootlng Guide (Continued) MALFUNCTION TEST OR INSPECTION Corrective ACTION 1. Raw water pump heater does not work. (Ref. Schematic diagram FO-1, sheet 11, schematic lines 1105-1108). NOTE Circuit breaker 13 (REF: Interconnection diagram FO-2, Sheet 8) is a ground fault breaker. High humidity or moisture around devices controlled by this breaker may occasionally cause trouble. Check that atmospheric moisture is not causing the tripping by drying out anything controlled by this breaker, including wire connections. Shut down ROWPU and generator, Refer to electrical drawings in Appendix D. Check continuity, point-to-point, from transformer T2(1C) to J18D (REF: interconnection diagram FO-2, Sheet 9). Do the same from transformer T2(2C) (REF: Interconnection diagram FO-2, Sheet 10) to J18E. (a) Repair any loose or damaged wires (para. 2-20). (b) Replace auxiliary contact MS3-1 (REF: Interconnection diagram FO-2, Sheet 10), if it shows open (para. 2-25). (c) Replace switch SS6 (REF: interconnection diagram FO-2, Sheet 12), if open (para. 2-22). (d) Replace circuit breaker CB13 (REF: Interconnection diagram FO-2, Sheet 8), if it is open (para. 2-23). 2. Distribution pump heater does not work. (Ref. Schematic diagram FO-1, sheet 11, schematic lines 1110-1113). NOTE Circuit breaker 14 (REF: Interconnection diagram FO-2, Sheet 8) is a ground fault breaker. High humidity or moisture around devices controlled by this breaker may occasionally cause troubles. Check that atmospheric moisture is not causing the tripping by drying out anything controlled by this breaker, including wire connections. 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 J15J (REF: Interconnection diagram FO-2, Sheet 9). Do the same from transformer T2(2C) to J15K. (a) Repair any loose or damaged wire (para, 2-20). (b) Replace auxiliary contact MS2-1 (REF: Interconnection diagram FO-2, Sheet 10), if it shows open (para. 2-25). (c) Replace switch SS6 (REF: Interconnection diagram FO-2, Sheet 12), if open (para. 2-22). (d) Replace circuit breaker CB14, if it is open (para. 2-23). PUMP SKID HEATER. 1. Pump skid heater does not work (no heat, no fan). (Ref. Schematic diagram FO-1, sheet 5, schematic lines 512-516). Shut down ROWPU and generator. Refer to the electrical drawings in Appendix D. Check continuity, point-to-point, from the power distribution block (PDB) (REF: Interconnection diagram FO-2, Sheet 10) to J20 (REF: Interconnection diagram FO-2, Sheet 16) on the following lines: AL1 to J20D, AL2 to J20E, and AL3 to J20F. Disconnect the J20 connector when testing. (a) Repair any loose or damaged wires (para. 2-20). (b) Replace circuit breaker CB17 (REF: Interconnection diagram FO-2, Sheet 10) if it is open on any phase (para. 2-25). (c) Replace/repair the heater if the above checks have not located the problem (para. 2-69). 2. Pump skid healer fan motor runs but there is no heat (see Figure 2-69 for heater circuits). Step 1. Disconnect connector P66 (REF: Interconnection diagram FO-2, Sheet 16) from the high pressure assembly junction box. Open the heater electrical access panel. Check continuity between T1-T2 (REF: Interconnection diagram FO-2, Sheet 10), between T2-HL3, and between T1-HL3. It should be zero or near zero when the meter is set on the Ohms x 1 scale. Replace the heater elements if the reading is infinity on any pair (para. 2-69). 2-14 Change 1

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