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7530 52023
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Sleipner Hydraulic Retract Thruster
MC_0009
If an original Sleipner hydraulic system is NOT installed, please ensure the following:
• Install an oil filter to keep the oil clean.
• Fit an oil cooler to ensure that the maximum oil temperature is below 75°C. Recommended operation temperature of hydraulic oil is 40-60°C.
• Hydraulic thrusters are supplied with hydraulic motors only.
• The installed hydraulic system is the responsibility of the fitter/ installer and must be within the limitations outlined in this manual to ensure no
damage is caused to the thruster.
• The hydraulic valve must have flow and pressure limits that are either set within or can be adjusted to the limits of the thrusters capability.
• We strongly advise that a shock valve is fitted and set to 10% - 15% above the chosen maximum pressure set in the valve. This will prevent the
system from being damaged if the propellers are blocked for any reason.
• Install a device to ensure the drive direction cannot be suddenly changed, as this can severely damage the gear leg. (NB: Use a electric control
system or a valve that ensures minimum 1 second delay when changing drive direction.)
The installer must read this document to ensure necessary familiarity with the product before installation.
Instructions in this document cannot be guaranteed to comply with all international and national regulations. It is the responsibility of the
installer to follow all applicable international and national regulations when installing Sleipner products.
The recommendations given in this document are guidelines ONLY, and Sleipner strongly recommends that advice is obtained from a person
familiar with the particular vessel and applicable regulations.
This document contains general installation instructions intended to support experienced installers. If you are not skilled in this type of work,
please contact professional installers for assistance.
If required by local regulation, electrical work must be done by a licensed professional.
Appropriate health and safety procedures must be followed during installation.
Faulty installation of Sleipner products will render all warranties given by Sleipner Motor AS.
Ensure appropriate access to Sleipner products during installation planning for service, inspection and component replacement.
MC_0038
Responsibility of the Installer
MC_0425
For thruster systems
• Do not install the thruster in a position where you need to cut a stiffener/ stringer/ support that may jeopardise the hull integrity without checking
with the boat builder this can be done safely.
• Paint the gear leg and propellers with anti-fouling. (NB: Do not paint the anodes, sealing, rubber fittings or propeller shafts)
• There is only room for a thin coat of primer and two layers of anti-fouling between the tunnel and the props.
• Never run the thruster out of water without load. Operated at no load, the thruster can reach extremely high speed, damaging the system.
Failure to follow the considerations and precautions can cause serious injury, damage and will render all
warranties given by Sleipner Motor as VOID. MC_0411
When installing an S-Link™ system connect ONLY original Sleipner S-Link™ products or other authorized control equipment directly to the S-Link™ bus.
Connecting non-authorized third-party equipment, it must always be connected through a Sleipner supplied interface product.
Any attempt to directly control or connect into the S-Link™ control system without a designated and approved interface will render all warranties and
responsibilities of all of the connected Sleipner products. If you are interfacing the S-Link™ bus by agreement with Sleipner through a designated
Sleipner supplied interface, you are still required to install at least one original Sleipner control panel to enable efficient troubleshooting if necessary.
MC_0105
MC_0474
For retract thrusters
• Stern mounted retract thrusters must not be installed to conflict with propulsion propellers or its water trail. (NB: consult a naval architect for
an exact position.)
• Paint inside the retract housing with anti-fouling. (NB: Do not paint the drive shaft.)
MC_0440
General Installation Consideration and Precaution Guidelines
Accidental activation of the retract mechanism can cause serious injury due to the high-pressure
force used for closing the hatch. IF operating the hatch during any work/ maintenance around or
inside the retract hatch, USE CAUTION.
MC_0411
MC_0631
For 650 retract thrusters
• Due to the weight of the retract system it is important to utilise the defined lifting lugs when installing the retract housing.
Sleipner Motor AS
P.O. Box 519, Arne Svendsensgt. 6-8
N-1612 Fredrikstad, Norway MC_0451
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