Technical Manual
80
Maintenance
NOTE:
Appropriate safe working practices should be followed to ensure that
all hazards are minimised, particularly if access is gained to the cone
by supporting the base above the deck and pushing.
During normal operation, the cone should be checked every time the CPT
returns to the ship, to ensure it is still tightly screwed to the cone-rod. The
condition of the tip and sleeve should also be identified, as a badly worn tip
and/or sleeve can cause a severe degradation in the quality of data obtained.
Spare cones should be carried at all times, so that an alternative cone can be
fitted while cones with worn tips and sleeves are being serviced.
There is a viewing window in the support block to allow the dirt seals
at each end of the sleeve to be cleaned with water from a hose or
similar supply. It is important that this is done to allow free
movement of the sleeve under low friction conditions.
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