Raw Water System; Seacocks; Raw Water Strainers; Raw Water Washdown (Option) - Maxum 4100 SCB Owner's Manual Supplement

Ra w Wa t e r S y s te m

Seacocks

Seacocks are valves which are typically used to manage the intake of raw water
through the hull below the water line (raw water intake seacocks). Seacocks
may also be used to discharge waste or water through the hull below the water
line (discharge seacocks).
Seacocks are controlled by a 90º lever and are used on your yacht in the following
raw water intake/discharge systems: Engines, generator system, (optional) air
conditioning system and standard marine head (toilet) system.
SYSTEM DAMAGE HAZARD! Verify that the system's seacock is OPEN
before the system is started and keep the seacock open until the system is
shut off. Close seacocks whenever the systems will not be used for long
periods of time

Raw Water Strainers

Raw water strainers are used in water pickup systems
to filter incoming raw water. The typical layout is one
strainer for each of the following: Engine, optional
generator and optional air conditioning system.
Raw water strainers are located near raw water intake
valves (seacocks) and should be checked every time you
use your yacht for leaks and/or debris. If debris is found,
clean the raw strainer as follows:
1. Make sure the component/system (engine, optional
generator, etc.) that the strainer is connected to is
turned OFF.
2. Close the seacock that sends raw water to the
strainer you are about to clean. The seacock must
remain closed until the strainer is completely reas-
sembled.
3. Take apart the raw water strainer.
4. Remove debris.
5. Flush strainer with water.
6. Reassemble the raw water strainer.
7. Open the seacock and check for leaks around the
strainer. If no leaks are found, you may activate the
component or system.
• FLOODING HAZARD! The seacock that sends raw water to the strainer must be
CLOSED before disassembling the raw water strainer to prevent the yacht from taking on
water through the raw water strainer assembly. Keep the seacock CLOSED until the raw
water strainer is completely reassembled.
• SYSTEM DAMAGE HAZARD! After reassembling the raw water strainer, verify that the
seacock valve is OPEN before energizing the component/system.

Raw Water Washdown (Option)

The raw water washdown pump is located near the shower sump pump holding tank. The raw water faucet is located
inside the port side tub on the foredeck (see drawing above).
CAUTION!
!
! CAUTION!
Chapter 2: Components/Systems
SHOWER SUMP PUMP & RAW WATER
WASHDOWN SYSTEM ROUTINGS
TO RAW WATER WASHDOWN,
LOCATED ON FOREDECK
TO BILGE
THRU-HULL
GRAY WATER
FROM SHOWER
DRAIN
SHOWER SUMP PUMP
SEACOCK
RAW WATER
WASHDOWN PUMP
4100 SCB Owner's Manual Supplement
TYPICAL RAW WATER INTAKE
SEACOCK COMPONENTS
90 DEG.
SEACOCK
LEVER
HULL
INTAKE
SECTION
STRAINER
TYPICAL DISCHARGE
SEACOCK COMPONENTS
90 DEG.
SEACOCK
LEVER
HULL
SECTION
VIEW OF FOREDECK
RAW WATER
WASHDOWN
FAUCET
AFT
25
SEACOCK
GASKET
SEACOCK
GASKET