Quick BTR250, Руководство пользователя

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34
EN
RETRACTABLE THRUSTER BTR250 - IT EN - REV08B
WARNING - OPERATION/USAGE
OPERATION / USE OF RETRACTABLE THRUSTER
To correctly use the retractable thruster, refer to the TCD control manual
Start-up
When switching on, the RTC R1 board verify the position of the retractable thruster (raised, lowered or in an intermediate posi-
tion). If it is raised, the system does not execute any actions. If it is lowered or in the intermediate position, it will command the
ascent of the retractable thruster.
Enabling control from TCD (Retractable thruster descent)
When the RTC R1 board is enabled by a TCD control, the retractable thruster begins its descent.
The left/right commands from the TCD are inhibited until this operation is complete. During the descent phase, the RTC R1 board
measures the current absorbed by the linear actuator. If mechanical friction causes elevated absorption in the linear actuator,
the descent will be reversed briefly and then restart. After 3 attempts, the RTC R1 board will signal the problem.
Disabling control from TCD (Retractable thruster ascent)
When the RTC R1 board is disabled by a TCD control, the retractable thruster begins its ascent.
The right/left commands from the TCD are inhibited during the ascent. During the ascent phase, the RTC R1 boards measures the
current absorbed by the linear actuator. If mechanical friction causes an elevated absorption in the linear actuator, the ascent
will be reversed briefly and then restart. After 3 attempts, the RTC R1 board will signal the problem.
Automatic ascent in case of time out TCD
With the propeller lowered, after 6 minutes from last TCD right or left control, the retractable thruster performs the ascent pro-
cedure.
Errors detection from TCD
In case TCD sends an error signal in network (prolonged control, line interruption, short circuit in right or left output), the
retractable thruster performs the ascent procedure.
WARNING
WARNING: this bow thruster is not designed for continuous use.
It is equipped with protections which limit its operation at a maximum time span, as reported on the controls’ manual.
It is strongly forbidden to bypass or modify such protections in order to increase the operating time span, lest voiding the
warranty and thus lifting any responsibility from Quick SPA.
WARNING: before starting the retractable thruster ensure there are no bathers and floating objects near-by.
WARNING: To prevent any damage to the system, it is recommended not to sail with the open retractable thruster; to
perform the thruster’s opening and closing at a maximum speed of 4 knots, according to the currents, and at a maximum
speed of 2 knots, still according to the currents, if reversing.
WARNING:
to avoid damaging the system, it is recommended not enable the retractable thruster at speeds over four
nodes.
WARNING: there must not be flammable materials in the peak or in the area where the Bow Thruster motor is.
WARNING: during mooring, it is recommended not to leave in the water any free line, which may be sucked in by the
propellers, thus leading them to break (fig.
26
).
Fig. 26