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 TM 55-1925-273-10-1
0046 00
Table 8. ROWPU General Arrangement (refer to figure 8) (continued)
Key
Control/Indicator
Function
3
RO-PG-2-1, ROWPU 2
This gauge indicates pressure at the 5-micron filter inlet for ROWPU 2. It is
25-Micron Filter Outlet/
used with the high pressure pump inlet pressure gauge to determine
5-Micron Filter Inlet Pressure
differential pressure across the 5-micron filter. Refer to table 9.
4
PW-37, BROMINATOR
This valve controls the flow of potable water into the brominator.
INLET Valve
5
PW-36, BYPASS-
This valve is OPEN to bypass the brominator.
BROMINATOR Valve
6
PW-38, Inlet Valve
This valve controls the discharge flow from the brominator.
7
PW-84, POT. WTR. TO
This valve is OPEN to permit the vessel's potable water to recirculate through
BROMINATOR Valve
the brominator.
8
RO-V-7, Backflow Preventer
This valve controls the flow of water into the fresh water flush circuit's
Inlet Valve
backflow preventer.
9
RO-V-6, Backflow Preventer
This valve controls the flow of water out of the fresh water flush circuit's
Discharge Valve
backflow preventer.
10
ROWPU 2 Flow Control
This panel contains the gauges needed to monitor the quantity and quality of
Panel
product water and the means to control overall system pressure for
ROWPU 2. Refer to table 10.
11
RO-V-1-2, ROWPU 1 Brine
This valve controls the flow of brine discharge from ROWPU 1.
Discharge Valve
12
RO-V-2-2, ROWPU 2 Brine
This valve controls the flow of brine discharge from ROWPU 2.
Discharge Valve
13
RO-V-8, Product Water
This valve controls the flow of product water discharge from the ROWPUs.
Discharge Valve
14
ROWPU 2 System Controller
The controller monitors the salt content of the product water by means of
the salinity probe, and signals the 3-way diversion valve when potable water
is being produced. The 3-way diversion valve and pump motors are all
directly connected to, and governed by, the system controller. Refer to
table 11.
15
ROWPU 1 Flow Control Panel
This panel contains the gauges needed to monitor the quantity and quality of
product water and the means to control overall system pressure for
ROWPU 1. Refer to table 10.
16
Media Filter Gauges and Valves
The gauges indicate pressure in the media filter, and the valves control the
flow of water in and out of the media filter for maintenance purposes. Refer
to table 12.
17
RO-V-10, Media Filter
This valve permits the operator to purge the filtered contents of the media
Backflush Discharge
filter overboard if it becomes clogged. Refer to table 13.
0046 00-14
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