2-9. OPERATING PROCEDURES - cont.
Fill Product Water Tanks. Refer to figure 2-63. Product water produced by the ROWPU is stored in two
product water tanks. Product water tank No. 2 must at the same level or lower (down hill) than tank No. 1 for proper
Make sure product water tank covers are installed (TM 5-5430-227-12&P/TO 37A12-1-121).
To prevent injury to personnel, do not fill product water tanks until TDS is less than 1000 and chlorine
residual is 5 ppm or as directed by medical personnel.
Open gate valve between product water tanks No. 1 and No. 2.
Allow product water to flow through tank No. 1 into tank No. 2.
If product water tanks are at the same level, both tanks will fill at about the same rate.
If water tank No. 2 is lower than tank No. 1 allow tank No. 2 to fill first. Then, close gate valve and
allow tank No. 1 to fill.
When both product water tanks are full, shutdown the ROWPU (para. 2-14) until more water is needed.
Figure 2-63. Filling Product Water Tanks.