MAX POWER
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, then plugged until connected.
A parachute valve is installed in the B port in the up/down unit and this is very easily
blocked by contamination!
Should during closing plate adjustment or thruster operation the up down unit motor
ceases to function check the up down unit fuse (16 A).
The up down unit pressure limiter is normally
pre set
, should you need to re adjust
it
slightly
do not forget that the up down unit
functions constantly
on maximum
pressure while the thruster is thrusting. This to hold the turbine in the down position.
TRANSMISSION LUBE OIL TANK INSTALLATION
Retract thrusters are no longer equipped with Transmission lub oil tanks.
HYDRAULIC POWER SYSTEM INSTALLATION
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.
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 diagram )
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
bar. Fittings must be of good quality, and crimped as per manufacturer instructions.
All power circuit piping connected directly to the thruster unit must be of non
conductive thermo-plastic type.
The following rules must be taken into account when positioning the hydraulic power
components.
Flexible hydraulic hoses must not have a bend radius less than the manufacturers
stated minimum. Also the larger the bend the higher the efficiency of the system.
Small radius metallic elbow fittings must be avoided on the pressure piping.
The pump intake hose line (from the reservoir) must be of a quality that is not subject
to pinching crimping or collapse.
This hose should preferably be shorter than 2 meters and have no more than two 90-
degree elbows bends.
7
INSTALLATION MANUAL RETRACT R 300
