Lewmar Issue 2 warranty Concept Circular Hatch Fitting & Adjustment Instructions

B4072

ISS B

Concept Circular Hatch Fitting & Adjustment Instructions

(To be retained in owners manual for future reference)

Concept circular hatches are for use on power craft in accordance with ISO/DIS 12216.2(E), DESIGN CAT "A", AREAS II, III and IV. Modification of the hatch by the fitting of vents etc. will invalidate the compliance with this standard.

Fitting Instructions

Concept circular hatches should be fitted to a flat surface with a maximum tolerance of +/- 1mm and a deck / hull thickness of 20-40mm Check that all fastenings will be clear of deck moulding radii etc. Allow clearance for lid opening.

Mark the deck with a pencil around the outside edge of the frame flange.

It is essential that the frame is a snug fit with the deck opening.

When fitting a number of hatches it is advisable to prepare a template.

Cut out deck along pencil line using a suitable saw.

Where the deck is of composite construction, it is recommended that the exposed laminate be sealed with the appropriate material prior to fitting the hatch. Openings cut in metal decks should have all burrs and sharp edges removed.

Hatches should not be considered as stiffening members and it is recommended that the deck be adequately stiffened to prevent distortion during heavy weather.

Re-check the frame on aperture and then apply bedding compound to the channel in lower frame. Bedding compound must have good adhesive qualities (eg. silicone sealant), be a suitable grade for marine sealing applications, of 3mm minimum thickness and compressible to allow the lower frame to be pulled down in contact with the deck by the securing screws.

Position lower frame over hole and drill all holes and fasten down with the appropriate stainless steel fasteners (see below). Start with those nearest the hinge, taking care not to damage the acrylic.

Deck type

Wood	M5 through bolts or marine grade wood screws.
GRP/Steel/Al Alloy	M5 through bolts or machine screws into suitable tapped plates.
Fixing Sizes	M5, 10UNC, 2BA, 3/16", Wood screws (min. length 40mm).

Once installed check for correct operation of the hatch lid, ie. closing/locking, even pressure of seal etc.

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