Monitor EMS video monitor.
SALINITY display page values (Figure 3-6) should read less than 1000 ppm.
HIGH PRESSURE WATER PUMPS (Figure 3-7) display page should show in normal white
(nonblinking, non double intensity) light.
(6) Monitor HP pump gauges (Figure 3-2) as a backup to the EMS.
After dumping product water overboard for 15 minutes, check water quality.
(1) Obtain product water sample at valve RO9.
(2) Manually check total dissolved solids (TDS), salinity, and pH of product water being discharged (TM 5-
(3) Make sure salinity reading is less than 1000 ppm and pH factor is about 7.
If quality of product water in step v is acceptable, proceed to paragraph 3-5.
(1) If quality of product water is not acceptable, continue to discharge water overboard for another 15
Repeat step v. Continue to discharge water overboard if water quality remains unacceptable.
(3) If water quality is not acceptable after an additional 15 minutes, troubleshoot according to paragraph 4-4.
Product water CANNOT be discharged to drinking water storage tanks until
chlorination system is operational and providing sufficient chlorine additive to the
product water. The only exception to this would be when chlorination system is
not operational. As a temporary emergency measure, and with prior coordination
with water unit ashore, product water may be stored in tanks and pumped ashore
where chlorination can be added by the water unit on the beach.
Make sure chlorine is being added to ROWPU product water before water enters storage tanks. If chlorination
system is unable to provide proper amounts of chlorine, continue to pump product water overboard or
suspend operation of seawater and ROWPU systems until chlorine is available. For chlorination system
operation, see TM 55-1930-209-14 & P-4.
Make sure drinking water system storage tank valve(s) in table below are open for tanks to be filled.
Open valve RO15 and close valve RO20 to allow product water to flow to drinking water storage tanks.
The EMS monitors salinity of output from each ROWPU, amount of chlorine in
water entering the tanks, water level in the four storage tanks, and HP pump
diesel engine lubrication oil pressure and cooling water temperature. Salinity is
shown on SALINITY display page, Chlorine entering storage tanks is shown on
CHLORINE STATUS display page, storage tank levels are shown on POTABLE
WATER TANKS display page, and engine indicators are shown on HIGH
PRESSURE WATER PUMPS display page.