Water Pump and Filter
Once the water pump switch is switched on, the water pump sup-
plies water under pressure to the fresh water system. The filter
keeps particles from entering the pump reservoir. Check the filter
periodically and clean if necessary. A clogged filter may be the
cause of low water pressure to the system.
Before servicing the filter, turn the water system breaker OFF and
release pressure on the system by opening all faucets. To clean the
filter, remove screen and rinse with clean water. Replace and make
sure the O-ring is seated properly when installing the cover.
Note: Refer to the water pump manual for detailed operation
and maintenance procedures.
MARINE SANITATION DEVICES
Vacuum Toilet
The EcoVac toilet operates in a way different from other marine toi-
lets. EcoVac systems use a small amount of water (a little more
than a pint) per flush in addition to a simple vacuum. The toilet is
connected to a pressurized freshwater system. Fresh water is the
key to an
odor-free bathroom compartment
. EcoVac toilets are
equipped with an integral vacuum breaker which prevents the possi-
ble contamination of the potable water supply.
Vacuum Tank
The vacuum tank stores vacuum energy. System vacuum level is
monitored by a vacuum switch located on the vacuum tank. When
this switch senses a drop in vacuum in the system, it automatically
signals the pump to energize and bring the vacuum to operating
level. This process is normally completed in less than one minute. In
a properly operating system, the stored vacuum will leak down
between flushes, causing the vacuum pump to run for a short period.
Vacuum Pump
The vacuum pump is an electric, straight-through bellows type. It is
manufactured of long-lasting polypropylene and draws only 4 to 6
amps of current at 12 VDC. This unique pump design is both an effi-
cient air and liquid pump, and handles solids without a problem. It
has two duckbill valves on each side of the pump chamber.
Vacuum Generator
The vacuum generator combines the vacuum tank and vacuum
pump in one unit. It greatly reduces installation time and eliminates
the hose run between the tank and pump. Its compact size makes it
especially well-suited to smaller crafts.
3-12
Deck Plate
Level Indicator
Gray Water Tank
Galley Sink
Head Sink
Level Indicator
Panel
Figure 3.5 Gray Water System
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