23
6. Sand and clean the area around the hole, inside and outside, to ensure
that the sealant will adhere properly to the hull. If there is any petroleum
residue inside the hull, remove it with either mild household detergent or
a weak solvent (alcohol) before sanding.
7. Proceed with "Bedding and "Installing (see chapter 6.2).
7. Maintenance, Repair & Parts
7.1 Using the Blanking Plug
To protect the paddlewheel, use the blanking plug when the boat will be
kept in salt water for more than a week, the boat will be removed from the
water, or aquatic growth build-up on the paddlewheel is suspected due to
inaccurate readings from the instrument.
1. Inspect the O-rings on the blanking plug (replace if necessary) and
lubricate them with silicone lubricant or petroleum jelly (Vaseline
®
)
(see Figure 6).
2. Remove the insert from the housing by removing the safety wire.
Loosen the cap nut (see Figure 4).
3. With the blanking plug ready in one hand, pull the insert most of the
way out. Remove the insert and rapidly replace it with the blanking plug.
With practice, only 250ml (10oz.) of water will enter the boat.
4. Screw the cap nut several turns until there is resistance. Rotate the
insert until the key engages the notch in the housing. Be sure the arrow
on the top of the blanking plug is facing forward toward the bow.
Continue to tighten the cap nut. Hand-tighten only. Do not over tighten.
5. Reattach the safety wire.
7.2 Servicing the Insert
Aquatic growth can accumulate rapidly on the depth transducers surface
and impede or freeze the paddlewheels rotation reducing performance
within weeks. Clean the insert with a soft cloth and mild household
Warning: Always attach the safety wire to prevent the insert
from backing out in the unlikely event that the cap nut fails
or is screwed on incorrectly.
Warning: The O-rings must be intact and well lubricated to make
a watertight seal.
Содержание Triducer-Through-hull
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