HAND/OFF/AUTO switch is on HAND. Discharge pump is started or
stopped by pushing START or STOP button on motor controller or
pushing START or STOP button on ROWPU space remote
START/STOP switch (Figure 3-1) on ROWPU space forward
As tank(s) Is/are being filled and drinking water is being discharged to shore, EMS continuously monitors water level In
tanks, discharge flow rate, water discharge pressure, and salinity.
As drinking water Is being discharged to shore, periodically check the following:
(1) On EMS video monitor, check following Indications.
POTABLE WATER TANKS
Level In each tank Total level in all four tanks
Chlorine content between 5 and 7 ppm
Salinity of drinking water being discharged not
than 1000 ppm
Water pressure for shore discharge flow is not
than 140 psi, flow rate is 250 gpm
(15,000 gph) and total amount discharged is
(2) If EMS indications are not within these tolerances, take corrective action Periodically, manually check
chlorine content and salinity according to TM 5-6630-215-12. Obtain sample at storage tank sample
valve If readings do not agree with EMS reading, take corrective action.
(3) On tank liquid level indicator, compare level In each tank to EMS reading If not in agreement, take
(4) On flow meter In void 3 port, check flow rate and total water discharged and compare to EMS reading
If not In agreement, take corrective action.
Level in each tank is monitored by a liquid level sensor. When water rises above the level that starts, or falls below the
level that stops, the discharge pump, EMS visual alarms flash and audible alarms sound.
Alarms are also
activated when discharge pressure or salinity falls outside acceptable values. EMS video monitor automatically changes
to ALARM page which displays problem condition In flashing double intensity. In addition, POTABLE WATER TANKS
key flashes red and sounds an alarm. These alarms warn crew that appropriate corrective action must be taken.
If alarms are activated, perform procedures (1), (2), (3), (4), or (5) as appropriate
(1) If alarms are activated by tank high liquid level switch due to a full tank(s), while shore discharge
pumps are operating normally, perform the following
Stop discharge pump by moving HAND/OFF/AUTO switch on motor controller to OFF
Press red flashing POTABLE WATER TANKS key on EMS keyboard to change EMS video monitor
ALARM display page back to POTABLE WATER TANKS display page