Direct Potable Water to Storage (Figure 2-47).
During first start-up with new RO elements, continue to direct the product water to waste for
at least 30 minutes to flush out preservative.
The TDS meter is designed for use with water temperatures of 50F (10C) and above. If water being tested is below
50F, then reading obtained must be adjusted. Use water temperature along base of graph (Table 2-22.1) to obtain the
multiplier on the left side of the graph. Multiply reading by the multiplier obtained to correct the reading for temperature.
(Example: 35F = 1.08 multiplier, 41F = 1.05 multiplier.)
Table 2-22.1. TDS Temperature Graph
Use the portable TDS meter to measure the TDS from the concentrated sample valve (Item 20, Figure 2-6).
Table 2-23 presents the maximum product water TDS as a percentage of the water source TDS. Use the portable TDS
meter to measure the water source TDS.
Calculate the maximum product water TDS as shown in the examples.
Before placing the product hose end into a tank, be sure mud and dirt have been washed
· If after 20 minutes the product water TDS has not dropped below the calculate maximum,
refer to RO elements troubleshooting, Table 3-1. The product water may only be directed
to storage if released by the medical team.
· When product water is acceptable for storage, fill the 5 gallon plastic jug for use in net
start-up. Set the 5 gallon jug filled with product water in corner of the van.
· Water will fill all potable water storage tanks simultaneously once the outlet level of the
first tank is reached
Compare the actual measured product water TDS with the maximum TDS. If the measured sample is less, and the water
is released by the medical team, proceed and direct the product water into the storage tanks by inserting the product
water hose in the middle tank and strapping it down.
2-84 Change 12