5086-2-2018
Page 4
System description for Flybridge Yachts (Twin helm)
Upper helm
Lower helm pump
Servo pump
System unit
Rudder cylinder
The Power steering system comprises four main components.
1) The System Unit, consists of the Electronic Control Unit (ECU), an Oil lter and a
Valve Block integrated with the Oil Tank (Reservoir).
2) A Hydraulic Pump Unit, driven by an attached 24volt D.C. electric motor.
3) 2 x Helm Pumps
4) Hydraulic Cylinder(s)
The lower (primary) steering position helm has two functions:
a) It contains electronic sensors which transmit a signal to the ECU for normal Steering
operation.
b) It acts as a Hydraulic Helm Pump (back-up) in the event of an ECU system shut
down (NB, The number of wheel turns will increase from stop to stop during back up
mode).
The upper/ybridge helm has electronic sensors that pulses signals to the ECU for
normal Steering operation.
Both helms have a built in warning LED (Red). This will illuminate during an alarm
condition.
See description of the alarm functions on page 3
Hydraulic connections
Electric connections
Alarm buzzer
Alarm buzzer
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