MaxPower RETRACT R450 Series User manual

MAX POWER
- 1 INSTALLATION MANUAL RETRACT R 450 Last update: December 2013
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FO OR R _
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BU UI IL LT T B BY Y _ __ __ __ __ __ __ __ __ __ __ __ __ __ __ __ _
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DE EL LI IV VE ER RE ED D
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∫ A copy of this manual must remain
on board for consultation.
FOR
M
MA AX X P PO OW WE ER R R RE ET TR RA AC CT T R R4 45 50 0
S
SE ER RI IE ES S T TH HR RU US ST TE ER RS S

MAX POWER
C
CO ON NT TE EN NT TS S
INTRODUCTION
P3 CONTACTING MAX POWER
P3 IMPORTANT GENERAL INFORMATION
P3 CHECK LIST FOR THE PROJECT MANAGER
DETERMINING BEST EQUIPMENT LOCATION
P4 OF THE RETRACT THRUSTER UNIT
P5 OF THE AUXILIARY EQUIPMENT
INSTALLATION PROCEDURES
P5 CONSTRUCTION OF THE MOUNTING BASE
P6 CONSTRUCTION OF HULL OPENING & CLOSING PLATE
P7 FINAL FITTING OF THE RETRACT UNIT TO THE MOUNTING BASE
P7 FINAL ADJUSTING OF THE CLOSING PLATE
P8 RAISE/LOWER POWER PACK INSTALLATION
P8 TRANSMISSION LUBE OIL TANK INSTALLATION
P9 HYDRAULIC POWER SYSTEM INSTALLATION
P10 ELECTRICAL SYSTEM INSTALLATION
P10 CONTROL SYSTEM
CHECKS, TESTS & ADJUSTMENTS
P11 BEFORE LAUNCHING
P11 AFTER LAUNCHING
OPERATION AND USE
P12 OPERATING PROCEDURE
P12 GENERAL OPERATING INFORMATION
TROUBLESHOOTING GUIDE
P 13
MAINTENANCE OF THE RETRACT
P 14
PROJECT MANAGERS CHECK LIST
P 16
TEST RESULTS FORM
P 17
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MAX POWER
INTRODUCTION
AFTER SALES SERVICE
ADDRESS :
MAX POWER
Via Philips 5, 20900 Monza, Italy
TEL : + 39 039 200 1973-936
FAX : + 39 039 2004299
RETRACT SERIAL N° S . R4 _ _ . _ . _ _ _ _
IMPORTANT GENERAL INFORMATION
With a constant concern of improving our products, we reserve the right to make
changes to this manual without prior notification.
All statistics and explanations within this manual were believed to be correct at the
time of printing.
Each RETRACT installation requires a preliminary study of performance and
feasibility.
This study covers 3 distinct sub systems :
1. The RETRACT thruster unit, (positioning ,space available ,structural compatibility
etc)
2. Hydraulic equipment, (positioning equipment ,power available , flows pressures
pipe sizes etc)
3. Electrical equipment, (positioning ,power supply , protection / isolation ,etc )
CHECK LIST FOR THE PROJECT MANAGER
It is very important to carefully read the entire manual before starting the installation.
At the end of the manual, you will find a MAJOR POINT CHECKLIST when you are
inspecting the work of your installers. All the points listed must be strictly respected
for the proper and safe operation of the RETRACT system.
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MAX POWER
The RETRACT should be installed by a professional specialising in this type of
installation.
Architects, construction shipyards and surveyors should be contacted before
installation.
All official bodies or classification experts should be contacted before the installation.
All mechanical installation must apply with the conditions as laid down in the country
of the boats registration.
All electrical installation must apply with the conditions as laid down in the country of
the boats registration origin.
All hydraulic installation must apply with the conditions as laid down in the country of
the boats registration origin.
WARRANTY REQUIREMENT
IMPORTANT : All Test readings must be filled out on the form provided and sent to
Max Power by fax no later than one week after the water tests have been completed
so that the Max Power standard warranty is correctly validated. This form is attached
at the end of this manual.
DETERMINING BEST EQUIPMENT LOCATION
POSITIONING OF THE RETRACT UNIT
IMPORTANT : Correct positioning is essential for correct operation.
(See drawing 1)
The turbines centre requires to be 675 mm (26 ″) below the water-line when fully
extended.
In other words the turbine should be at least one full diameter below the water-line.
The following considerations must be taken into account when determining the
position of the RETRACT.
→ The space available given the vessel’s fixtures, space and shape, and the
installation at the farthest point forward (or aft) while respecting the minimum
immersion of the turbine.
→ The structural compatibility of the mounting base.
→ The access needed for installation, and removal of unit.
→ Sufficient access for all maintenance procedures must be allowed for.
→ That the turbine when down is clear of all obstacles that might disturb water
flow.
IMPORTANT: Always check and make sure that there is enough room to allow for
complete removal of the RETRACT unit, and room for the connection of the hydraulic
piping.
NOTE: Always make sure that there is enough room for the manual override system.
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MAX POWER
LOCATION OF THE AUXILIARY EQUIPMENT
The transmission lube oil tank and the hydraulic directional valve should be located
near the RETRACT unit, but in an accessible and dry place.
The hydraulic oil reservoir must be located above the water line, above and as near
to the pump as possible there must be now sharp elbows between the pump and the
oil tank.
The control panel (s) joystick (s), or foot switches are to be installed as required at
helm stations. The remote control box is to be installed in a convenient dry and well-
ventilated position.
INSTALLATION OF THE RETRACT UNIT
CONSTRUCTION OF THE MOUNTING BASE
MAX POWER can supply as an option, a G.R.P. laminated mounting base,
aluminium alloy machined mounting-flange. These options allow you to save
considerable installation time, and assure precise installation.
The general method and materials used must be adapted to the particular hull
material (laminated wood, GRP, sandwich, aluminium, or steel). Naval Architects,
Classification Societies or engineering firms should be consulted.
GUIDE BLOCKS
The thruster’s mechanical stresses are spread over the hull by the mounting base
and the guide blocks. Installation, which should be executed by welding or bonding to
the hulls plating, normally reinforces the hull, The mounting base should be attached
to frames and stringers as well. The guide blocks should be replaceable should they
be found worn at a later date.
After the mounting base has been made, the RETRACT should be temporarily
secured on the flange to check its height its, centring, the accessibility of fittings and
the ease of operation of manual up down override system.
Another important reason for this is to determine the exact location of the two plastic
guide blocks.
These blocks are to be fabricated by the installer from a suitable plastic (PEHD type
etc) incompressible with 0 % moisture absorption.
The guide blocks distribute the thrust forces to the hull. They should be fixed to the
interior of the mounting base so that they will be directly in contact with the folding
arm pivots when the turbine is fully extended (See building plan) .
GRP HULLS: The mounting base may be moulded into the hull during construction
or prefabricated, and then laminated onto the hull later.
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MAX POWER
METAL HULLS: The mounting base may be constructed with the hull or
prefabricated, and then welded onto the hull later.
IMPORTANT: In both cases, the top surface of the mounting base ( the flange) must
be given particular attention and machined perfectly flat in order to accept the « O »
ring seal of the RETRACT base flange and ensure perfect water tightness.
The bolts fixing the RETRACT onto the mounting flange must be inserted from top to
bottom.
Provide sufficient access underneath the flange to allow for tightening the nuts. If the
access is not possible, provide a special mounting flange with metric 12 mm studs or
tapped holes.
CONSTRUCTION OF HULL OPENING & CLOSING PLATE
The required hull opening dimensions are: L = 516 mm x W = 300mm.
The longitudinal centre line of the opening coincides with that of the mounting flange.
But the transversal centre line of the opening is offset by 30 mm to the rear with
respect to the transversal centre line of the mounting flange.
The opening is closed by a plate that may be made from the cutout hull section, or
specially fabricated.
This closing plate should bear against a gasket fixed to a 20 mm wide rebate when
in the raised position.
While the hull opening closing plate is being fabricated, the RETRACT must be
temporarily secured on the mounting base flange to facilitate correct closing plate
installation.
The closing plate must be fixed to a fabricated aluminium adjustable mounting (
which should have 6 elongated holes for final adjustment).
A gasket needs to be installed in the hulls rebate. This gasket can be made either out
off sealed cell neoprene rubber or moulded in «SIKAFLEX » (or a similar product) to
form a flexible seal Precaution must be taken to ensure that the flexible gasket does
not glue the closing plate to the hull while drying .The plate must rest evenly, on the
gasket with a reasonable pressure.
The closing plate should be tested for adjustment at this point, using the fixation bolts
to hold the plate in place, raise and lower the unit a few times.
IMPORTANT : To prevent marine growth inside the casing, it is essential that once
the unit is raised, no light is allowed to enter the turbine enclosure. Therefore the
closing plate gasket is essential and requires careful and permanent fixation.
NOTE : Never use antifouling or other paints on the RETRACT unit.
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MAX POWER
FINAL FITTING OF THE RETRACT UNIT TO THE MOUNTING BASE
CAUTION: To ensure absolute cleanliness, hydraulic lines and ports must remain
plugged until final connection.
Final installation on the mounting base must be made after thoroughly cleaning and
then liberally coating both joint surfaces (case and base) with good quality marine
grease. This is so that the « O » ring seal is compressed flat, evenly, smoothly and
squarely when the bolts are tightened.
CAUTION: Under no circumstances should the RETRACT be glued or bedded down
with a marine type mastic/glue such as Sikaflex or other similar product.
The flange bolt should be tightened sequentially and in successive passes until the
two surfaces touch. If desired, a torque wrench can be used and the bolts can be
tightened to a torque of 5,0 kg/M. The flange bolts should be metric size 12 mm of
stainless steel, and should have a large stainless steel washer placed above a nylon
washer. The nylon washers avoid stainless steel contact with the aluminium case.
The nuts should be NYLOCK self-locking type.
The 4 lifting lugs provided by MAX POWER, should be put in a small plastic bag,
along with the hydraulic pipe plugs, for storage and future use by the ships crew .
FINAL ADJUSTING OF THE CLOSING PLATE
(See drawings N°4 & N°3)
Once the thruster is permanently bolted onto the mounting base, reinstall the plate
and check it’s adjustment.
The turbine is naturally closed at rest because of the gas spring used in the lifting
mechanism .It is the force of this spring that most of the time holds the plate closed
Adjust the closing plate so that it fits evenly and squarely in its hull recess.
When testing the cover plate fit, use the manual lower mechanism.
Two rubber blocks have been placed on the top of the turbine to help adjust the
closing plate in the correct position.
Tighten its fixation bolts (A) then remove the rubber blocks. (Drawing n°3 fig 2)
Be sure that it is the gas spring holding it in place, and that the thruster is not fully
folded with the plate shut (see drawing n°3 Fig 1)
The closing plate could however open at sea because of aqua dynamic forces or
because of down ward momentum.
The thruster is therefore fitted with a mechanical locking device.
(See drawing N°2)
Although the RETRACT R450 is delivered completely tested and folded in the folded
UP position, the locking slide bar cannot be definitively adjusted at the factory.
Adjustment has been set at the factory in the medium position
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MAX POWER
It may be necessary to readjust the slide bar height so that the Bar engages
automatically or so that the bar is not loose when the thruster closes. This is done as
follows
Loosen the two bolts holding the locking slide guide (F on drawing N°4) and adjust its
height by using 19 mm bolt (G).
Correct adjustment has been obtained when Bar engages automatically with a
sharp snap, and you cannot pass a 0.1mm feeler gauge between the locking cam
and the locking bar. This adjustment must be achieved with the Up down unit set no
higher than 40 bars.
When correct adjustment has been obtained re-tighten the guide’s bolts (F).
RAISE / LOWER POWER PACK INSTALLATION
The raise/lower unit should be near the RETRACT unit. It should be installed in a
readily accessible and dry place.
It should be connected to the control box with 2 x 6 mm² cable for the motor power
and 3 x 1 mm² for the up down spool valves. The up / down unit motor is protected by
a 16ah fuse found in the control box.
The hydraulic ports (LA and LB) on the raise/lower pump unit and the raise/lower ram
(VA and VB) must be connected A to A and B to B.
The flexible hoses must be 3/16″or 1/4 ″with an operating pressure rating of at least
100 bars.
CAUTION: to prevent the risk of electrical earth leakage’s, the hydraulic hoses
connected directly to the RETRACT should be non-conductive (non-metal braided
hose) high-pressure thermoplastic hose. Absolute internal cleanliness is
essential. After pipes and hoses have been equipped with their fittings, they must be
blown out with compressed air, and then plugged until connected.
The pressure limiter on the unit is pre set and should need no adjustment!
If adjustment is needed always use the minimum pressure needed & do not exceed
75 bar.
Do not forget that the unit runs constantly when the thruster is thrusting. It is
therefore when thrusting (in particular to stbd) that the maximum pressure can be
read.
TRANSMISSION LUBE OIL TANK INSTALLATION
The transmission lube oil tank is no longer used on retract series units.
HYDRAULIC POWER SYSTEM INSTALLATION
Hydraulic power system general
A RETRACT R450/40 Can take up to 110 LPM of hydraulic flow this will causes on a
normal installation approximately 210 bar pressure at the thrusters inlet ports.
A RETRACT R450/50 Can take up to 170 LPM of hydraulic flow this will causes on a
normal installation approximately 170 bar pressure at the thrusters inlet ports.
The hydraulic power system should be designed in consequence.
The hydraulic power system must start the thruster gently (soft start) either by using
a ramping valve or by using a 2-stage slow/fast speed bypass system.
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The control box is equipped for both but may need re programming.
Please note that a bow thruster does not have a specific pressure the pressure at a
given flow can vary by approximately 10 % depending on installation parameters.
All the hydraulic power equipment, such as the piping, reservoir, pump, directional
valve, etc. should be installed in compliance with the usual rules of accessibility to
enable periodic checks and maintenance.
MAX POWER recommends the use of ISO GRADE 15 to 32 hydraulic oils for the
power circuit.
PRESSURE PIPING
All hydraulic high pressure power circuit piping must comply with high pressure
standards, and have a diameter at least equal to that recommended (see drawing
N°5) in order to reduce pressure loss especially when the installation’s layout
requires long hose lines.
All power circuit piping must have a continuous service pressure rating of at least 280
bars. Fittings must be of good quality, and crimped as per manufacturers instructions.
The pump intake hose line (from the reservoir) must be of a quality that is not subject
to pinching or crimping.
This hose should preferably be shorter than 2 meters and have no 90-degree elbows
bends.
CAUTION: to prevent the risk of electrical earth leakage’s, the hydraulic hoses
connected directly to the RETRACT should be non-conductive (non-metal braided
hose) high-pressure thermoplastic hose. Absolute internal cleanliness is
essential. After pipes and hoses have been equipped with their fittings, they must be
blown out with compressed air, and then plugged until connected.
RESERVOIR
The reservoir should be mounted as close to the pump as possible and must always
be higher than any other component in the system. The reservoir must be mounted
at a height that allows the breather to be situated 500 mm, or higher, above the
waterline. If this is not possible, then the breather can be removed and installed on
the end of an extension pipe or hose.
Mounting the reservoir too low could result in oil draining back, or overflowing the
tank. Be sure to allow enough space above the reservoir to service the filter.
If MAX POWER does not supply the reservoir, then provide a return filter of 60
microns and a suction strainer.
The reservoir must be flushed after installation.
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MAX POWER
DIRECTIONAL CONTROL VALVE
The directional control valve (DCV) must be placed between the pump and the
RETRACT unit, it is recommended to locate the DCV as near to the RETRACT as
possible (in an accessible and dry place).
The DCV block used must be equipped with a pressure gauge so as to check
operating pressure on commissioning and for maintenance.
The block must be equipped with a pressure relief valve set to 220 bars.
If a central system is used a cross line relief valve can be used.
(See Drawing N°6)
ELECTRICAL SYSTEM INSTALLATION
Although MAX POWER has used the best materials available, the installer should
endeavour to install all electrical equipment with the view that it should be in a
ventilated and dry environment at all times. Control panels mounted at helm stations
must be provided with protection if the station is exposed to the weather.
All wiring must be insulated from ground and its installation executed in compliance
with safety and classification standards.
CONTROL SYSTEM
The Retract R450 control system is all centralised in the electronic control box
All numbers indicated on our diagrams must be connected 1 to 1 and 2 to 2 wire
sections must be respected to the letter.
The control box command’s the up down unit and hydraulic power spool valves in the
correct sequence with correct timing. (Sequence chart with diagrams)
There is scope for modifying sequence timing in this box but consult MAX POWER
FIRST! (See diagram N° 8)
All Retract equipment is connected to this box (See diagram N° 9)
All wires should be carefully labelled to reduce the chance of error and simplify
checking and troubleshooting.
All wire ends for terminals should be tinned before inserting into terminal blocks.
The control system of the RETRACT requires 30 amps of stabilised 24 v dc power.
The 24 volt input power is automatically transformed to produce 12 volts for the
control panel use control panel only.
The major power consuming components of the RETRACTS electrical system (the
raise/lower unit, the directional valve solenoids, and the electromagnetic clutch) are
supplied with 24 volts from the control box.
Complimentary alarms may be added at will (over heat, low oil, etc etc) as on
Diagram N°10
Switching the thruster system on is achieved by a two-pole 32-amp circuit breaker
(not supplied by Max Power), which should normally be located on the main electrical
panel.
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MAX POWER
CHECKS, TESTS & ADJUSTMENTS
BEFORE LAUNCHING
IMPORTANT: Before the launch, verify that the RETRACT unit inspection top plate
has been replaced (if it was removed during installation) and that all the lower flange
bolts have been tightened. Torque for all these bolts is 5 kg/m.
Filling the hydraulic circuit.
MAX POWER recommends the use of ISO GRADE 15 to 32 hydraulic oils for the
power circuit. This mineral oil has already been used by Max Power during the run in
tests and consequently the RETRACT motor and piping are already filled with this
kind off oil.
CAUTION : Biodegradable and mineral (commonly used) oils are non compatible
and should not be mixed or used together. Mixing them will deteriorate certain
hydraulic elements. If you intend to use a biodegradable oil, thoroughly flush the
existing mineral oil from the RETRACT unit first with the appropriate oil.
Before carrying out the below test we recommend to disconnect the wire at terminal
N° 32 in the control box.
→ Check all fittings for tightness and leaks.
→ The transmission is already filled with oil at the time of delivery.
→ Max Power uses HYPIOD HD 80W/90 oil in the transmission; therefore, fill the
transmission lube oil header tank with similar grade oil. The function of this
lubricant tank is to ensure a constant pressure, as well as a visual control of
the oil-level. The tank should be filled to the ¾ level. Purge air in tube before
fitting the pipe to the RETRACT.
Performing the UP / DOWN tests (standard joystick control panel).
→ Check UP / DOWN operation.
→ This unit has a second function, in that it blocks the turbine in the down
position when thrust is applied.
Move joystick to port or starboard and check that the up/down hydraulic pump
is pushing the turbine down.
Remove the rubber spacers between the turbine and the lifting arm
AFTER LAUNCHING
→ Check for water leaks.
→ Switch on the system power at the breaker and repeat the UP / DOWN tests.
→ Execute a few short left and right manoeuvres to fill the circuits and thereby
purge the system of all air. After each manoeuvre, check and fill if necessary,
the hydraulic tank. Repeat until the level remains stable.
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Warning: All hydraulic systems develop very high pressures. Failure of piping,
connections etc that have been improperly installed will most likely happen on start
up. Stay clear of these components. Wear eye protection, and be aware that high-
pressure oil can cause major skin damage.
→ Check the thrust direction:
→ With the Joystick to the left (port), the vessel should move to port and
conversely. If the direction is not correct, inverse to connectors on the
hydraulic distributor.
Once all the above tests have checked out correctly, you may now carry out the
directional control valve (DCV) adjustments and the thrust tests.
OPERATION AND USE
Operating Procedure
Switch on the system power breaker (main equipment panel).
On the control panel: (See Diagram N°11)
- Turn, the red button switch to the right. The red lamp will light, indicating that
power is available, and the turbine is in the raised position.
- Pull the joystick towards yourself (aft or down), the red light will extinguish, the
alarm buzzer will sound until the green light illuminates. The unit is ready for use
when the green light is lit and the buzzer is silent.
- Move the joystick to the left (port), the vessel will move to the port and conversely.
Use the thruster as required. If the alarm buzzer sounds and the green light is still on
during operation, stop the thruster immediately. This alarm indicates that a problem
has occurred on one of the auxiliary alarms.
When finished reverse the above operation: move the joystick away from yourself
(forward or up), the green light will extinguish, the alarm sounds until the red light
illuminates indicating that the RETRACT is fully retracted. It is now safe to advance
at normal cruising speeds.
CAUTION: Never leave the RETRACT in lowered position when not in use. The
RETRACT must be in up position (retracted) when sailing.
The RETRACT is designed to be used in harbour when manoeuvring at low speed
(below 3 knots).
Switch off the system power breaker.
General Operating Data
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R440 hydraulic motor driven Series - A conservative estimate of the maximum
overall and intermittent operating times for all the R300 models (before heat
accumulation produces too high a temperature in the hydraulic circuit)
Intermittently: 15 min at 20°C
Continuous operation: 5 min at 20°C
For longer service periods, Max Power recommends an optional heat exchanger and
water pump installation to provide extra oil cooling.
TROUBLESHOOTING GUIDE
PROBLEM : Thrust stops almost immediately after it has been applied. The alarm
buzzer comes on and the green light turns off.
PROBABLE CAUSE 1 – The Raise/lower Electro-pump unit is not working correctly.
REMEDY : Check that the Raise/lower unit has 24 vdc power to the motor. Check
that the pump operates in down position before the thruster starts.
PROBABLE CAUSE 2 - The green (B) position switches out of adjustment.
REMEDY : Readjust the green (B) position switch by loosening its securing nut and
readjusting it closer to the actuator.
PROBLEM : The thruster seems to be developing less thrust.
SECONDARY CAUSE : Low oil pressure.
REMEDY : Check pressure. Consult hydraulic technician
THIRD CAUSE : Propeller problem (plastic bag, rope, etc…)
PROBLEM : The turbine retracts, but the alarm does not stop or the red light does
not illuminate.
PROBABLE CAUSE : An object such as a line, plastic bag, or other flotsam is
caught between the closing plate and the hull.
REMEDY : Raise and lower the unit a few times to see if the object clears. If it does
not, try to remove the object manually.
WARNING NEVER put your hand into the opening of the hull.
PROBLEM : The RETRACT will not open.
PROBABLE CAUSE : No power (24 vdc) to the Raise/lower unit.
REMEDY : Check the 20 amp or 15 amp fuse breaker in the control box,
Check that wire number 5 has power,
Check that power is available to the unit, by checking the voltage on
wires
n° 21 & 22 in the control box .
Check oil in the reservoir of R/L unit
Check joystick operation.
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The RETRACT 440 is equipped with a manual override device which can be used
for lowering the RETRACT turbine from the UP to the DOWN position.
IMPORTANT never leave the Manuel override screw unscrewed while using the
hydraulic up down unit this would result in very serious damage.
PROBLEM : The transmission lube oil tank level decreases.
PROBABLE CAUSE : The propeller shaft oil seals are worn.
REMEDY : Change the seals at next haul out. In the meantime, fill the transmission
with 80 or 90 gear oil, and check the level often.
MAINTENANCE OF THE RETRACT
Regular checks
1. Lower and raise several times every month
2. Transmission lubricating oil reservoir level.
3. Hydraulic power oil reservoir level.
4. Hydraulic hoses for chaffing and leaks.
Control panels, like all external equipment, should be protected from the sun and
weather. Clean with a soft cloth and mild detergent solution.
Yearly checks boat ashore.
1. Clean the turbine, gearbox and the propellers with a sponge and detergent soap.
It is also advisable to remove the top cover plate and clean the interior of the
caisson and rinse well the articulated joints.
IMPORTANT : If the vessel will remain out of the water for some time, for example :
dry storage for the winter, the top cover plate must be removed and the RETRACT
mechanism must be thoroughly rinsed with fresh water, especially the articulated
joints. Do not operate below 0° C.
2. Replace all anodes.
3. Change transmission oil , if you find water in the drive leg oil check seals
4. Remove the propellers and check oil seals replace if necessary .
5. Inspect and repair the hull closing plate gasket for deterioration or missing pieces.
Check and tighten if necessary, the plate fixation bolts.
6. apply antifouling paint to the closing plate on the outside, on the edges and if
desired to the plates inner surface. If you find growth on the unit, this is because
your closing plate gasket allows light to enter the enclosure.
CAUTION : Do not use antifouling or other copper based paints on the RETRACT
turbine.
7. The transmission oil must be changed each year. This can be done by extracting
the sump plug screw. Never let the oil level in the lube tank descend below the
level of the ships waterline.
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8. Check the entire hydraulic system hoses and connections for possible chaffing
and leaks.
9. Every two years, drain the entire hydraulic oil system. Clean and replace filters.
5 YEARS
1. Complete removal of unit and return to factory.
Replacement of all submerged flexible hoses.
Replace all oil seals and check for bearing wear.
Unit striped and re corrosion treated / painted .
Replacement of all articulation bushes .
2. Service of complete hydraulic oil system included pump, distributor, etc…
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PROJECT MANAGER’S
TEST RESULTS FORM
To be filled out and
faxed to MAX POWER
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TEST RESULT FORM (part 1)
This form must be filled out and faxed to MAX POWER within a week after launching
so that the MAX POWER standard warranty is validated.
MAX POWER
Via Philips 5,20900, Monza
Italy
Tel : [phone]
Fax : [phone]
From :
………………………………
………………………………
………………………………
………………………………
………………………………
………………………………
………………………………
Date : …………………………
REFERENCE : S _ _ .R4_ _ . _ _ _ _
10.Shipyard that installed the RETRACT: ………………………………………………
11.Name of the Project Manager: ………………………………………………………..
12.Name of the Vessel: …………………………………………………………………..
13.Type & Make of the Vessel: …………………………………………………………..
14.Date of launching: ……………………………………………………………………...
Please answer by YES or NO the following questions concerning the installation:
YES NO
1 Is the RETRACT mounted parallel with the bottom of the hull?
2 Is there enough room for general maintenance of the RETRACT and its auxiliary
equipment?
3 Does the closing plate rest upon a gasket?
4 Is the adjustment of the closing plate done in such a way that no light is allowed to
enter?
5 Are the anodes correctly fitted to the closing plate supports?
6 Have you re fitted a cable tie in the manual lowering screw as in drawing?
7 Is the RETRACT unit glued to the mounting base?
8 Have you screwed the manual override screw back to its closed position
9 Is the pressure relief valve set to 220 bar
10 Are all-electrical wires numbered at each end and with their terminals tinned?
11 Is the electrical supply to the remote control box constant and stable?
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When all the tests have been completed as per the manual, please record the
following measurements where applicable.
With the engine(s) running, thruster in the down position, but not running:
1. Record the voltage at the remote control box: ………………… Volts
With the engine(s) running and the thruster running (either direction):
1. Record the voltage at the remote control box: ………………… Volts
2. Record the hydraulic pressure: slow speed ………………… Bars
3. Record the hydraulic pressure: full speed ………………… Bars
4. Record the hydraulic flow: slow speed ………………… Bars
5. Record the hydraulic flow: full speed ………………… Bars
6. Record the hydraulic pressure on the up/ down unit: …………… Bars
Other comments:
DATE OF TESTS: LOCATION:
PERSON RESPONSIBLE : ……………………………..
SIGNATURE:
- 18 INSTALLATION MANUAL RETRACT R 450

MAX POWER
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As long as possible
Turning center
A minimum immersion depth of one full turbine diameter should be respected and the thrusters should be as far forward or aft as possible. The thruster must be paralell with the botom of the hull not the water line !
WL
- 19 INSTALLATION MANUAL RETRACT R 450

MAX POWER
Mounting base as supied by MAX POWER
Hull parts manufactured by ship yard
Principal dimentions
Optional flotation foam to reduce loss of boyancy
Retract Thruster
Construction point ( Never changes nomater the hull shape )
17/4/00
RETRACT R450 PRINCIPAL DIMENTIONS
YT Turbo CAD
The Thruster should be mounted
paralell with the botom of the hull
Flexable water seals
175
300
C
CL
Bow
127
516
300
385
Bow
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Flexable Mountings
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Thrust transfer plates
940
460
302
Allow 200
742
- 20 INSTALLATION MANUAL RETRACT R 450