MAX POWER
The pressure can be read on the pressure gauge. Important: Close pressure gauge
valve after checks.
ADJUSTING THE DCV / SOFT START HYDRAULIC POWER
The DCV vale blocks as supplied by Max power are equipped to start the thruster in
a two stage (soft start sequence.)
This is achieved by using bypass system that sends half of the thrusters hydraulic
flow directly back to the tank during the first (slow speed) moments after start.
The installers must adjust the speed or power of this first stage during
commissioning.
Adjusting (slow speed) BYPASS FLOW.
The bypass valve must remain open during this adjustment process. This is done by
With N.O. bypass valves : disconnecting the wire at terminal 11 in the control box.
With N.C. bypass valves : disconnecting the wire from terminal 11 and connecting it
to terminal 32 in the control box.
Doing this will ensure that the bypass valve remains open. The type of bypass valve
(N.O. or NF) supplied with your system, is marked on the valve body and in the
control box.
Adjusting flow limiter
1
Loosen lock nut on bypass flow limiter adjustment screw and open pressure
gauge valve (both on DCV)
2
Apply thrust in either direction and read the pressure gauge during thrust if the
reading is under 100 bar turn the adjustment screw clockwise until the
pressure rises to 100 bar .If the reading is to high do the opposite operation to
reduce the pressure. When the correct pressure has been obtained hold the
adjustment screw (Allen key) and tighten the locknut.
Reconnect the bypass wire to terminal 11. This will cause the bypass valve to
automatically close a moment after the pump begins to deliver power and thereby
directing full flow to the thruster.
The pressure readings at full speed should correspond with the following.
Model
R300/15
220 to 260 bars
@ 28 to 32 Lpm
Model
R300/21
230 to 270 bars
@ 45 to 55 Lpm
Variations are possible depending upon the installation.
After these adjustments are made, do not forget to close the pressure gauge (no. 10)
isolating valve.
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INSTALLATION MANUAL RETRACT R 300
