Mounting the transducer
When all the preparations have been made, the transducer is mounted. If required, additional and more detailed procedures must be provided by the installation ship yard.
Prerequisites
Image
The following requirements must be met before mounting the transducer:
•  The physical location of the transducer has been determined.
•  The mounting ring has been installed.
•  The steel conduit is mounted with all installation work finalized.
Note
Whenever relevant, all drawings as well as the physical installation of each device must be approved by the vessel’s national registry and corresponding maritime authority and/or classification society.
The following special tools are required for this installation:
•  Torque wrench
•  Loctite 270 (permanent high-strength threadlocker)
•  Lifting device
Illustration:
A Mounting ring
B Clamping ring
C Cable service loop
D Bolt
Context
Observe the physical size and weight of the transducer. Unless a suitable lifting device is available, make sure that enough manpower is available to lift, hold and fasten the transducer.
Procedure
1 Lift the transducer up into its location. Align the holes on the mounting flange with the holes in the mounting ring.
Note
Observe the direction of the transducer. The "forward" marking must point towards the bow of the vessel!
2 Mount the transducer using the bolts provided. Apply Loctite 270 to secure the bolts.
Use maximum torque 35 Nm.
3 When the transducer has been fastened, inspect the plating around the transducer face.
Important
Make sure that the surface of the transducer face, as well as the plating and putty around the transducer is as even and smooth as possible. Obstructions on these surfaces will create problems with turbulent flow, and may cause noise.
4 If required, allow the relevant maritime authority and/or classification society to inspect and approve the transducer installation.