Troubleshooting (ROWPU) (continued) - TM-10-4610-239-10

Table 3-2. Troubleshooting (ROWPU) (continued)

Troubleshooting (ROWPU) (continued) - TM-10-4610-239-10_146

TM-10-4610-239-10 Water Purification Unit Reverse Osmosis 600 GPH Trailer Mounted Flatbed Cargo 5 Ton 4 Wheel Tandem Model 0996109001 Manual
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TM 10-4610-239-10 TM 08580B-10/1 Table 3-2. Troubleshooting (ROWPU) (continued) MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION a. If water is turbid, shut down ROWPU in normal manner (para. 2-29) and change cartridge filter elements (para. 3-5). b. If water is clear, notify unit maintenance because gage may be defective. 4. REDUCED PRODUCT WATER FLOW; R.O. PRESSURE PSI ADJUSTED TO 960 FOR SALTWATER, 500 FOR FRESH AND BRACKISH WATER. NOTE ROWPU produces less product water when raw water source temperature drops (3 % less per degree Celsius drop). Step 1. Check R.O vessels for leaks caused by loose end caps or defective end cap O-rings. a. Tighten loose nuts (para. 3-4h(15)). b. Replace defective end cap 0rings (see para. 3-4c - elements need not be replaced). Step 2. Check R.O vessel gage for reading higher than 100 psid. NOTE Membrane scaling may cause reduced product water flow without increasing R.O. vessel pressure. Cleaning elements when vessel pressure is under 100 psid may improve flow. Clean R.O. elements (para. 2-28). 5 PRODUCT WATER FLOW READING RISES ABOVE 16 GPM (FRESH/ BRACKISH), 12 (SEAWATER) AND CANNOT BE LOWERED USING REGULATE PRODUCT FLOW VALVE. Step 1. Check the TDS of product water from each R.O. vessel as follows: a. Use sample valves to collect product water sample. Do NOT disconnect product water hoses. WARNING Do not disconnect product water hose. Water is under pressure and will discharge rapidly. 3-6

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