DATASONICS SIS-1500, Системное руководство

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SIS-1500 Seafloor Imaging System 5-5
SECTION 5 Maintenance and Troubleshooting Tow Vehicle Periodic Maintenance
4. Inspect the shear pin for damage. Replace the pin if it appears worn or
damaged.
5. Verify that the socket head retaining screws that secure the tail fins are
snug.
Tow Vehicle Disassembly and Reassembly
The tow vehicle consists of four main subassemblies: the nose, the
electronics housing, the tail assembly, and the sonar transducer housing.
These components are shown in Figure 5-1. To access the sonar electronics
in the electronics housing, the nose and the electronics housing must be
removed. To access the sonar transducers in the sonar transducer housing,
the tail assembly and the sonar transducer housing must be removed.
Electronics Housing Disassembly
To disassemble the electronics housing and access the sonar electronics:
1. Prepare a clean, dry work area.
2. Using the supplied 1/4” drive palm ratchet extension tool, loosen the
closure bolt located in the nose by turning it counterclockwise until the
nose detaches from the housing.
3. Carefully pull the nose a few inches from the housing, far enough to
access the in-line connector, which is included only if one or more of the
optional sensors are installed.
4. Disconnect the in-line connector, if included, and set the nose aside.
5. Disconnect the safety cable from the towing arm by removing the safety
cable shackle.
6. While grasping or securing the sonar transducer housing, pull the
electronics housing straight out until it is clear of the electronics chassis
and set it aside.
7. To remove any of the circuit boards, or to remove the energy storage
capacitor bank, first remove the corresponding hold-down bar.
NOTE Be especially careful not to get any lubricant on the faces of the
transducer arrays as this will severely degrade their performance.