Vetus BOW12512B Manuel D'utilisation Et Instructions D'installation page 13

Introduction
The thrust given by the bow thruster will vary from vessel to ves-
sel depending on the effect of the wind, the water displacement
and the shape of the underwater hull.
The nominal thrust quoted can only be achieved under the most
favourable conditions:
• Make sure that the batteries are supplying the correct voltage
during use.
• Ensure that the installation has been carried out correctly
according to the recommendations given in the installation
instructions, in particular with reference to:
- Sufficiently large diameter of the battery cables so that
voltage drop is reduced to a minimum.
- The manner in which the tunnel has been connected to
the hull.
- Use of bars in the tunnel openings. These bars should
only be used where this is strictly necessary (if sailing
regularly in severely polluted water.)
The bars must have been fitted correctly.
Following the above recommendations will result in longer life
and better performance of your bow thruster.
• Carry out the recommended maintenance regularly.
• Never allow the bow thruster to operate for a long period;
the maximum length of usage is restricted because of heat
release in the electric motor. After use the motor must be
allowed to cool off.
The maximum continuous length of usage, which is also the
maximum length per hour, is:
Bow thruster '125 kgf' - 12 V : 2.5 min. at 840 A
'125 kgf' - 24 V : 2.5 min. at 470 A
IMPORTANT!
The maximum length of usage and the thrust as speci-
fied in the technical details are based on the recom-
mended battery capacities and battery cables; see
the 'installation instructions'. If significantly larger
batteries in combination with very short battery cables
of significantly larger diameter than recommended are
used then the thrust will increase. In such cases the
maximum length of usage must be reduced in order to
prevent damage to the motor.
Operation manual and installation instructions Bow thruster 125 kgf, ø 250 mm
Safety
WARNING!
When using the bow thruster watch out for swimmers or
light boats which could be in the near vicinity of the bow
thruster tunnel jet openings.
Pass on the safety instructions to others using the bow thruster.
General rules and laws with regard to safety and accident-pre-
vention also need to be applied.
• Never touch the moving ends of the bow thruster whilst in
operation.
• Never touch hot parts of the bow thruster and never place
flammable materials in the vicinity of the bow thruster.
• Always stop the bow thruster before checking components
or adjusting the bow thruster.
• Always detach the battery poles during maintenance work.
• Ensure maintenance work is safe by only using tools suitable
for the purpose.
• Always deactivate the main switch when the bow thruster is
not in use for long periods.
Use
CARE!
If 2 control panels are installed never operate the bow
thruster from both panels simultaneously.
- Switch on the main switch.
- Press once on the 'ON/OFF' switch. The indication light will
go on and the bow propeller is ready for use.
- The electric motor is commanded by the selector switch.
Never switch in one movement from starboard to port-
side or reverse, but wait until the propeller stands still,
before giving it a command to operate the electric motor
in the opposite direction.
NOTE!
A time-delay can be fitted between the bow thruster
motor and the switch panel. This allows the electric
motor to come to a stop when a switch is made from port
to starboard (or vice-versa) in one movement.
- When use of the bow propeller is no longer required, again
press the 'ON/OFF' switch.
- Switch off the main switch when leaving the ship.
ENGLISH
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020557.01