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.
- 5 INSTALLATION MANUAL RETRACT R 450
