TM 10-4610-215-10
TM 08580A-10/1
Table 3-2. Troubleshooting (ROWPU) (continued)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
MEASURED TDS
CONDITION
FRONT
REAR
SAMPLE
CAUSE
SAMPLE
1
Normal
Normal
Vessel Operation OK
2
High
Normal
Leak At Front End-Connector O-Rings*
3
Normal
High
Leak At Rear End-Connector O-Rings*
4
High
High
Leak At Front And Rear End-Connector O-Rings
and/or Element Interconnector O-Rings*
• Condition could also be caused by defective R.O.
element
Condition 1:
Replace threaded plug in product water stub tube end, remove male plug camlock fitting,
and reinstall product water hose into product water manifold. Repeat steps d through j for all
remaining vessels to determine the correct source(s) of high TDS.
Condition 2:
Remove front 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 para. 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 para. 3-4h.
Condition 4:
Remove the R.O. elements from the pressure vessel per para. 3-4. Check condition,
lubrication, and size of all O-rings. Replace damaged or wrong-size O-ring(s), lubricating
O-rings with lubricant found in Storage Box No. 2 before installation. Carefully install
elements and end caps per para. 3-4h.
i.
Adjust R.O. PRESSURE to 800 psig (seawater) or 500 psig (brackish water).
j. For each R.O. vessel in which O-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.
k. Open REGULATOR PRODUCT WATER valve fully.
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