Vetus BOW55HM Manuel D'utilisation Et Instructions D'installation page 6

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. Therefore, the following factors are to be
observed:
• Flow and pressure of the pump must be attuned to the
hydraulic motor.
• The actual method of connecting the thrust tunnel to the
ship's hull is of utmost importance for the best possible per-
formance. See paragraph 'installation instructions'.
• Only when absolutely necessary (e.g. when sailing frequent-
ly in muddy or polluted waters) grids may be installed to the
tunnel openings.
• In case such grid bars are being fitted, please observe
closely the recommendations made in paragraph 'installa-
tion instructions'.
Compliance with the recommendations that follow hereafter,
will result in a longer life and better performance of the bow
thruster:
• Never run the bow thruster continuously for a long period of
time. With a view to the internally generated heat.
• Check during sailing that the maximum temperature of the
hydraulic oil doesn't exceed a temperature of 100 degrees
C.
• All of the specified maintenance should be carried out regu-
larly.
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Use
General
- The bow thruster can only be used if the main engine, which
drives the hydraulic pump, is in operation.
- The thrust of the bow thruster depends on:
- the number of revolutions of the main motor
- the number of pieces of hydraulic equipment switched
on (for instance simultaneous use of both bow thruster
and stern thruster)
- Depending on the type of load-sensing-valve used, the bow
thruster must be operated using the appropriate control
panel:
- 1-step load-sensing-valve:
3-position lever switch: BPJE or BPJDE, or
selector switch: BPSE
- 2-step load-sensing-valve:
5-position lever switch: BPJ5 or BPJSTH5 or BPJ5D
If 2 control panels are installed never operate the bow
thruster from both panels simultaneously.
Operation manual and installation instructions Hydraulic bow thruster 55, 95, 160, 230, 310 kgf
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