PURSUIT 3070 EXPRESS, Owner'S Manual

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3070 OFFSHORE
59
Chapter 6:
RAW WATER SYSTEM
6.1 General
In the raw or seawater systems, all water pumps are supplied by hoses connected to ball valves and
thru-hull fittings located in the bilge compartment. Always make sure the ball valves are open
before attempting to operate any component of the raw water system. 12-volt pumps supply
seawater to most of the various accessories.
The optional air conditioner uses an AC seawater supply pump. This is the only AC pump in the
system and it is automatically activated when the air conditioning or heating system is in use.
Priming the System
Make sure the ball valves are open. Open the hose connector for the raw water washdown and
activate the pressure pump by turning the washdown pump switch to the “ON” position. Run the
pump until all of the air is purged from the system and then turn the switch off. Turn the livewell
switch to the “ON” position. Run the pump until all of the air is purged from the system and then
turn the switch to the “OFF” position. Closing the thru-hull ball valves before the boat is hauled
from the water will help to eliminate air locks in raw water systems.
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 High Pressure Washdown
A high pressure pump, controlled by a pressure sensor, supplies the raw water hose connector
located in the cockpit. The pump is activated by the washdown switch located under the gunwale
on the side of the cockpit. This switch should be turned to the “ON” position just before using the
washdown and be turned to the “OFF” position when the washdown is not in use.
When activated, the pressure switch will automatically control the pump. As the pressure builds
in the washdown hose, the pump will shut off. When the washdown hose is in use and the pressure
drops, the pump will turn on.
The raw water washdown system is equipped with a sea strainer on the intake side of the pump
located in the bilge below the stern access hatches in the transom splashwell. This should be
checked frequently and cleaned as necessary.