Appendix 2 Procedure For Retrofitting - Furuno CSH5LMK2 Installation Manual

APPENDIX 2 PROCEDURE FOR
RETROFITTING
When retrofitting the CH series with the CSH-5LMARK-2 it is not necessary to change the retrac-
tion tank. However, the hull unit must be chosen according to retraction tank length. Refer to the
table bellow to choose hull unit. This must also be done with the 1800 mm or 3500 mm retraction
tank.
Tank length (L) mm
600 L 750
750 < L 1000
1000 < L 1800
1800 < L 3500
Note 1: The hull unit CSH-5041-A (400 mm transducer travel) can not be used.
Note 2: When some portion of the main shaft is cut off, the parts listed below should be addition-
ally ordered.
Name
Waterproofing attachment
Lock-tight
The waterproofing attachment is supplied with the CSH-5040-A-FFx40.
Note 3: FF: Frequency, x: Retraction tank type
Installation when retraction tank is more than 750 mm long
1. Calculate the necessary length of the main shaft.
• Main shaft length = Tank length + 565 mm (See page AP-5.)
• If there is sufficient space above the hull unit, it is not necessary to cut the main shaft; the
main shaft is installed with its top portion protruded beyond the top of the hull unit.
• If the cut length of the main shaft is less than 50 mm, use it without cutting it. The water-
proofing attachment is not necessary. Note, however, that protrusion length of the transduc-
er is reduced.
2. Cut the main shaft to the necessary length.
• It is recommended to use a machine lathe to cut the main shaft.
• Chamfer the top of the main shaft as shown below. (When chamfering with a file, use a fine
file and finish the surface as smooth as possible.)
• When clamping the main shaft with a clamp, take care not to hurt the shaft surface.
• When a metal saw is used to cut the main shaft, finish the shaft top so that it is level within
3 mm.
AP-2
Hull unit type
CSH-5040-A-FFx13
CSH-5040-A-FFx15
CSH-5040-A-FFx23
CSH-5040-A-FFx40
10-044-2320-0
#601
C1
R1
XDCR cable: 4200 mm, Main shaft: 1300 mm
XDCR cable: 4200 mm, Main shaft: 1550 mm
XDCR cable: 4900 mm, Main shaft: 2350 mm
XDCR cable: 6600 mm, Main shaft: 4065 mm
Type
006-970-810
000-856-120
3 mm or less
Remarks
Code No.