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or other obstructions. Be sure that power tools are properly
grounded. Take the time to bed the base plate and fasteners
properly with sealant. Silicone seal is good for flat installations
on wood or fiberglass. Polyurethane bedding compound is
recommended on cambered surfaces or hatch installations
where fasteners will not be used. Use of polysulfide
compounds, may damage the area and melt the plastic.
NEW INSTALL INSTRUCTIONS
The Day/Night PLUS is designed to fit directly to the surface of the
deck or hatch of your boat. The vent unit mounts onto a base plate
that must be installed correctly to insure proper operation.
USING A HOLE SAW
When creating the opening with a hole saw, we recommend the use
of a variable speed drill. Cutting the hole at a lower RPM will ensure
that the hole is not cut too quickly, which can melt the plastic on a
hatch. Follow the directions for the drill motor itself and be sure it is
properly grounded. A slow, steady speed is recommended.
USING A SABER SAW
To cut the hole with a saber saw, select a blade that is compatible
with the material you are cutting (fiberglass, wood, acrylic etc.). Be
sure the saw is properly grounded. Drill a pilot hole near the inside
edge of the scribed circumference that is big enough to insert the
saw blade into. Insert the saw blade into the hole and slowly start
cutting out to the scribed circumference. Always cut right on your
line or just outside of it.
TIP: When using the saber saw method; Select your installation
location and, before scribing the circumference, cover the entire area
with wide masking tape. Scribe the circumference on top of the tape.
The tape will protect the installation surface while you are cutting the
hole.
FINISHING THE HOLE
Sand the edge of the hole smooth so that the trim ring and base
plate fit properly. Test fit the entire unit. If the deck is cored with
wood or foam, seal the exposed edge of the material with epoxy to
