Table 3-2. Operator Troubleshooting (ROWPU) - cont.
TEST OR INSPECTION
PRODUCT WATER FLOW READING RISES ABOVE 16 GPM (FRESH/BRACKISH), 12 (SEAWATER) AND
CANNOT BE LOWERED USING REGULATE PRODUCT FLOW VALVE cont.
Vessel operation OK
Leak at front end connector preformed packing*
Leak at rear end connector Preformed packing*
Leak at front and rear end connector Preformed packing
and/or R.O. element interconnector Preformed packing*
*Condition could also be caused by defective R.O. element.
Step 2. Check product water flow from each R.O. vessel.
Use same method as in Step 1 to collect product water sample, but this time measure the time in
minutes it takes to fill a 3-gallon bucket with product water from each vessel. Divide the number of
minutes by three.
b. Make a chart like the following:
Flow in GPM
c. Examine your chart for a similar pattern. Flow rate should get smaller from top to bottom.
(1) If any R.O. vessel does not follow this pattern, disassemble that vessel and replace defective
items (para. 3-4).