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 TM 55-1925-273-10-1
0028 00
PW-25
PW-57
PW-54
PW-93
PW-75
2
1
Galley
PW-4
PW-29
PW-32
PW-33
PW-73
PW
P
-34
PW-8
MAIN DECK
Figure 3. Potable Water System (Main Deck Galley)
POTABLE WATER PUMPS 1 AND 2
Two horizontal centrifugal potable water pumps draw potable water from either the port or starboard potable water tanks.
The potable water is routed, under pressure, to the hydropneumatic tank. Both pumps are rated for 15 gal/min (68.2 Liter/
minute) at 60 PSI (4.1 bar). Both pumps are driven by an electric 3 hp motor. Power to both potable water pumps is supplied
from 440V power panel No. 5. Both potable water pumps are controlled by a pressure switch.
PRESSURE SWITCH
The potable water pump pressure switch automatically turns on the pump in use when pressure drops to 40 PSI (2.76 bar) in
the hydropneumatic tank. The pressure switch de-energizes the pump in use when pressure reaches 60 PSI (4.1 bar).
PROPORTIONING BROMINE FEEDER
The proportioning bromine feeder (figure 2, item 3) treats potable water by adding a predetermined quantity of bromine to
0028 00-3
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