TM 10-4610-240-10
TM 08580C-10/1
T.O. 40W4-13-21
Table 3-2. Troubleshooting (ROWPU) (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
16.
PRODUCT WATER TOTAL DISSOLVED SOLIDS (TDS) LEVEL IS ABOVE 1500 PPM. (Continued)
Condition 2:
Remove front end cap and end-connector and check condition, lubricaion, and size of O-rings.
t
Replace damaged or wrong-size O-ring(s) with lubricant found in Storage Box No. 2 before
installation. Carefully reinstall end-connector and end cap per paragraph 3-4h.
Condition 3:
Remove rear end cap and end-connector and check condition, lubrication, and size of O-rings.
Replace damaged or wrong-size O-ring(s), lubricating O-rings with lubricant found in Storage Box
No. 2 before installation. Carefully reinstall end-connector and end cap per paragraph 3-4h.
Condition 4:
Remove the R.O. elements from the pressure vessel per paragraph 3-4. Check condition,
lubrication, and size of all O-rings. Replace damaged or wrong-size O-ring(s), lubricating 0rings with
lubricant found in Storage Box No. 2 before installation. Carefully install elements and end caps per
g. Adjust R.O. PRESSURE to 960 psig (seawater) or 500 psig brackish water).
h. For each R.O. vessel in which 0-rings were inspected, collect a sample of product water from
each end of vessel, rinsing each container twice with sample water before collecting sample. Do
one vessel at a time. Mark container appropriately as front or rear.
i.
Measure TDS of each product water sample (paragraph 2-15c(5). If one or both samples are still
high, leaky O-rings or faulty (cracked) connectors may still be present, or one or both R.O.
elements may be faulty. Depending upon availability of time, either repeat steps a through I or
replace the elements (paragraph 3-4).
j.
Resume normal operation.
Step 2.
R.O. elements may be scaled or fouled.
Clean R.O. elements (paragraph 2-12).
3-15
