Lifting the transducer up towards its mounting location
Once the transducer has been unpacked, it must be safely transported to the mounting location under the hull. A secure location must be then found for the transducer while the cables are pulled up through the steel conduit. Due to its weight, a specific method is recommended to lift the transducer up and in under its mounting location.
Prerequisites
You must be equipped with a standard set of tools. This tool set must comprise the normal tools for electronic and electromechanical tasks, such as screwdrivers, pliers, spanners, a cable stripper etc. Each tool must be provided in various sizes. We recommend that all tools are demagnetized to protect your equipment. The following specific tools are required for this task:
•  Adjustable spanner
•  Protective mat (for the transducer face)
•  Lifting device
•  Ropes and tackles
•  Transportation cart
WARNING
The transducer is heavy. Take all necessary precautions related to lifting. Observe the local rules and regulations related to the use of lifting equipment.
Context
The main purpose of this task is to position the transducer close to its mounting position. This makes it possible to pull the cables through the steel conduit while leaving a certain amount of slack immediately behind the transducer. This slack allows maintenance access without disconnecting all the cables.
Image
A Wooden protective plate (for the transducer face)
B Wooden beams with height minimum 15 cm
C Bolts through the clamping ring into the mounting ring will secure the transducer in place.
D Clamping ring
E Pull the cables through the blister or drop keel and into the hull before the transducer is mounted.
Note
The transducer - with the cabling - is a delicate item. Great care must be shown during all handling. Even minor damages to the transducer cable may cause water to penetrate both the cable and the transducer body. A physical blow to the transducer face may easily damage one or more elements.
Procedure
1 Ensure that the height between the vessel's hull and the dry dock floor is sufficient to allow access.
2 Make sure that the protecting plate is properly positioned under the transducer at all times.
3 Remove the lifting eye bolts from the transducer.
4 Make sure that the clamping ring can me moved freely upwards, and that it will fit around the outer rim of the transducer.
5 Under the mounting location, lift the transducer to a suitable height.