System Operation - Dometic SeasStar Power Assist Installation And User Manual

EN

2 System Operation

How it works
The Dometic SeaStar Power Assist (P/A) is an electronically controlled gear
pump that is added into the hydraulic steering circuit between the helm
and steering cylinder. Fluid circulated by the helm pump enters the power
assist and is routed through the gear pump to the steering cylinder(s). The
helm becomes the control element, controlling speed and direction, while
the P/A is the working element, adding power to the steering fluid.
The helm pump controls the pump speed – the faster you turn the wheel,
the faster the gear pump will run. When you aren't steering the P/A is
stopped, drawing only standby power.
HELM
PUMP
STEERING
LINES
COMPENSATING
LINE
H1 H2
POWER
ASSIST
C1 C2
UNIT
SEASTAR OUTBOARD
CYLINDER
Figure 2-1.
Using the power assist
The P/A is usually wired to turn on with engine ignition, in which case you
simply start your engine(s) and enjoy effortless steering from any helm on
your boat. The LED on the P/A will illuminate green when power is on.
WARNING!
Always perform a pre-trip inspection of the steering system, as shown in
section 2.1, before use.
H1
C1
TILLER ARM SEASTAR INBOARD
CYLINDER
HELM
PUMP
STEERING
LINES
COMPENSATING
LINE
H2
POWER
ASSIST
C2
UNIT
2-1