Tritech Intelligent Gyro Compass, Руководство по эксплуатации продукта

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Tritech International Ltd Intelligent Gyro Compass
11.4 Basic Maintenance Procedures
11.4.1 Pre and Post-dive Checks:
1. Check that the interconnecting cable is secure and undamaged.
2. Check that the mountings are secure.
3. Visually check the iGC for external damage to the anodised surfaces.
4. Function check the system as appropriate.
11.4.2 Storage
If the iGC is taken out of service, the connector should be cleaned and blanked off and the unit
thoroughly washed with fresh water.
Repair any damage to the anodised surfaces of the iGC as per the procedure in Section 11.5.
11.5 Procedure For Repair Of Anodised Surfaces
Every effort should be made to preserve the integrity of the anodised surface on the iGC. If the
anodised layer is broken, the following procedure should be followed in order to minimise damage to
the affected component:
1. Mechanically remove all visible corrosion products to get a clean metal surface.
2. Clean the affected area.
3. Apply an etch primer to the affected area, following the manufacturer’s instructions.
4. Apply a suitable paint coating(s) to the etch primer, following the manufacturer’s instructions.
Note: If the damaged area extends to and over a sealing surface the component should be replaced.
11.6 Flooding
If the iGC is flooded for any reason, then speed is of the essence. If the system software / interface
supports the water ingress sensor signal, the iGC should be powered down immediately that the
sensor detects water ingress.
After ensuring that pressure is not trapped inside the pressure vessel (see disassembly procedure),
the iGC should be opened and inspected. If the unit has suffered a significant leak and the PCBs have
become contaminated with seawater, the entire assembly should be washed in clean fresh water,
preferably by immersion. After washing, excess water should be removed carefully by blowing clean
with an airline, and the assembly should be sprayed with a water displacing fluid (e.g. WD40) and
excess blown off again.
After serious flooding it is recommended that the iGC returned to Tritech for repair.
If however the leakage into the iGC is only very minor and the PCBs have not become contaminated, it
may be possible to clean the internals without immersing in fresh-water. Under these circumstances,
the seawater should be dried off and a de-watering fluid (e.g. WD40) used to displace any traces of
water. It is recommended that the Subconn connector be removed and the ‘O’-ring replaced after
flooding, and at this time any traces of seawater that bay have entered the connector wire gallery
should be removed.
In all cases it is recommended that the unit be returned to Tritech for repair / test and pressure testing
prior to returning to service.
Issue 2 0707-SOM-00004 Page 33 of 51