Table 3-2. Troubleshooting (ROWPU) (continued)
TEST OR INSPECTION
b Check TDS sample from each R.O. vessel using TDS meter without range extender (para.2-
c. Use these findings to make a chart like the following:
The numbers on this chart are
examples only. Yours may vary.
Examine pattern of chart TDS should get -larger from top to bottom.
If any R.O vessel does not follow this pattern, there is something wrong inside; disassemble
the faulty vessel and replace defective items (see para 3-4).
If R.O vessels all follow this pattern, proceed to Step 2.
Check product water flow from each R.O vessel:
Use same method as in Step 1 to collect water sample, but this time measure the time in
minutes it takes to fill a3gallon bucket with product water from each vessel. Divide 3 by the
number of minutes.
Make a chart like the following: