Furuno FSV-24S installation manual Shortening the retraction tank

1.1.2Shortening the retraction tank

The retraction tank is 1300 mm in length when supplied. Shorten the tank as necessary so that the transducer is placed well below the keel when it is fully lowered. The following table provides guidelines for shortening the tank. Refer also to the retraction tank installation drawing at the back of this manual.

Installation

Method

XDCR Travel D D

	Remove 130	Remove 130 to 140 mm
	thru 140 mm	from the bottom.
1200 mm	from the	Same as left. Note that the length	Same as left.
	bottom.
stroke		"D" must be less than
		1170 mm.

	Remove		Remove less than
			140 mm from the
	less than			Same as left.
			bottom. Note that the
1600 mm	140 mm	Same as left.
			length "D" must be less
	from the
stroke			than 1570 mm.
	bottom.

Guidelines for shortening the retraction tank

Note 1: In the 1200 mm stroke type hull unit, the transducer will not fully protrude unless the tank is shortened by at least 130 mm from the bottom, and cannot be fully retracted if more than 140 mm is removed.

Note 2: In the 1600 mm stroke type hull unit, the transducer cannot be fully retracted if the tank is removed more than 140 mm.

Note 3: When 140 mm is removed and “D” is minimum, the effect of air foam is minimized because the transducer fully protrudes in water.

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