Scout Boats 221 Winyah, Owner'S Manual

Page: 51 / 150

51
RAW WATER SYSTEM
6.1 General
In the raw or seawater systems, the raw water
pumps are connected to seacocks on the thru-hull
fittings located in the stern bilge compartment.
Seawater is supplied to all baitwells, the release
well and raw water washdown by a manifold sys-
tem located near the raw water pumps. Valves
on the manifold control the water flow to the raw
water supplied wells and washdown. Always make
sure the ball valves are open and the manifold
valves are set for the desired accessories before
attempting to operate any component of the raw
water system.
When baitwells or the release well are full, the wa-
ter can recirculated by activating the recirculating
system on each well. The centrifugal recirculating
pumps are activated by the Recirc switches in the
helm switch panel. Each switch is labeled for the
well it controls.
Priming the System
Make sure the seacock valves are open and the
Raw Water Pump switches in the helm switch
panel are on. Turn all valves on the raw water
manifold to the open position and activate the
nozzle on the raw water washdown hose until all
of the air is purged from the system and then
turn washdown hose nozzle off. Allow seawater
to flow to all baitwells and the release well until
all of the air is purged from the system, then turn
the pumps off. The system is now primed and
ready for operation.
Note: It may be necessary to reprime the
raw water system if the system is not used
for an extended period and at the time of
launching.
6.2 Raw Water System Operation
Two pressure pumps located in the stern bilge
are activated by the Raw Water System Pump
switches in the helm switch panel and controlled
by a pressure sensor built into each pump. When
activated, the pressure switch will automatically
control the pump. As the pressure builds in the
system, the pump will shut off. When the system
is in use and the pressure drops, the pump will
turn on. The Raw Water System switches should
be turned to the “ON” position just before using
a raw water component and turned to the “OFF”
position when the system is not in use.
Water is distributed to the raw water components
by a manifold and valve system located near the
pumps. The valves are labeled for each compo-
Raw Water Supply Pumps and Strainers
Chapter 6:
Raw Water Supply System Manifold and Valves