Page 18 of 18
Date: 2019-02-12
There are two areas to consider maintenance:
1: Speed log performance may be effected by growth, shell, etc on sensor head.
Sensors may need carefully cleaned for growth to regain performance.
2: Sea valves consist of moving mechanical parts.
Greasing of mechanical parts may be considered to ensure operation and avoid corrosion.
Sea valves installed in wet areas (ballast tank etc) should be regularly inspected and greased.
Maintenance Tasks for inactive sensors
(If the system is to be off / and the vessel static for over 6 months (cold water), 3 months warm water).
When closing the vessel.
• Turn off unit at power, both Display and transceiver.
• Mark the alignment of the sensor on the gate valve and sensor flange/pole.
• Lift the sensor into the gate valve and close the valve.
• Grease the valves external moving parts
When restarting
• Heat the areas containing display, to allow condensation to evaporate.
• Lift and inspect the sensor head (or send diver). Carefully clean away growth.
• Redeploy the sensor taking care with alignment.
• Start the system.
• On first test, check alignment (Head Err in the calibration screen).
Dry docking in temperatures below freezing point
If vessel is to be dry docked in temperatures below freezing point water remained inside sea valve may cause
damage to sea valve or sensor/transducer.
13. Maintenance
SKIPPER Electronics AS
SB-100-SB Operation and Installation Manual
