Gebo Opening Portlights Fitting Operating Instructions 6/1/1997

Gebo Opening Portlights Fitting Operating Instructions 6/1/1997
EC-declaration of agreement regarding European Directive Pleasurecraft.
(Directive 94/25/EG, dated 16 june 1994)
Boomsma produktie B.V.
De Steiger 74
1351 AE Almere-Haven
The Netherlands
+31 36 521 12 12
+31 36 521 12 38
Referencenumber EC-Type examination:
BOA-0002, BOA-0003, BOA-0005,
BOA-0006, BOA-0012
Notified body: ECB-0614
Julianaweg 224A
1131 NW Volendam, NL
+31 299 32 31 23
Gebo portlights
We hereby declare that the Gebo portlights meet the requirements of the regulations of the directive (Directive 94/25/EG,
dated 16 june 1994), with regard to the
relevant regulations for Pleasurecraft of
ISO norm 12216 under European Directive
Almere-Haven, 25 april 1996.
P. Boomsma
General description
Gebo portlights are available in fixed and opening versions. The
fixed portlight is especially suitable for fitting in the hull. Gebo
portlights are designed for use on power and sailing yachts and
can be used in the toughest conditions.
All portlights are made from corrosion resistant materials. Hull
fitted opening portlights should be closed when sailing.
Fitting & operating instructions
The Gebo portlight has to be installed on
a flat surface with a maximum tolerance of
1 mm.
We advise that the portlight should be fitted to a vertical surface thereby eliminating the possibility of water lying in the
Fixing screws are not supplied as standard.
Use the correct length of screw depending
on the hull/superstructure thickness (see
table of screw lengths).
Cut the hole using the template supplied. The underside of the hole must be a
minimum of 600 mm above the waterline.
Make sure that the surface is completely flat and then place the portlight in the
hole. If the portlight does not fit correctly
or the surface is not flat, adjust the hole.
The portlight will not seal correctly and will
leak if it is fitted to a non flat surface.
Clean and degrease the mounting surface for the sealant. (Please note the specification of the sealant used.)
Apply the sealant on the flange of the
portlight. Place the portlight in the hole
and screw the innerrim to the mainframe.
Use a sealant based on butylrubber (not
silicone or polyurethane as this may cause
damage if the portlight is removed in the
future). Adjust hinges on opening portlights type ii and iii.
To reach the friction screw:
• Open portlight type ii completely
• Close portlight type iii completely
Adjust the friction by turning the screw
on the hinge (1 per hinge). We advise the
adjustment of all hinges.
Gebo portlights
After installation remove the protective
film from the acrylic.
N.B. Use only stainless steel fixing materials.
Operating the portlight
After unscrewing the portlight or turning
the handles, the portlight can be opened
(only opening portlights). The portlight will
remain open without a stay because of the
hinge system. The risk of involuntary closing is minimal. For safety it is important
that the friction hinges (not on portlight
type i) are correctly adjusted (see fitting 5
& 6).
The durability of anodised or powder
coated aluminium has been proven over
many years. Although aluminium is relatively maintenance free, it is necessary to
regularly clean the portlight.
It is adviseable to wash the portlight with
lukewarm water. The addition of a little
soap solution will assist the washing proces. Then wash with clean water.
Never use:
• alkaline products containing sodium
• acid products like muriatic or those containing phosphor
• steel wool, abrasives or sandpaper
• cleaning products for glass can also contain alkaline, which can corrode aluminium.
The portlight (fixed type i) can be supplied
with a deadlight. This deadlight will create
a watertight seal if the acrylic is damaged.
The deadlight and fixed portlights are
Lloyds approved.
Technical Data
Frame materials: AlMg Si 0.5
Glazing: 666 acrylic (PMMA)
Surface treatment : anodised or RAL powder coated
Allowable temperature: -25° till + 60°
Application Areas
The Gebo portlight type i opening and fixed
and fixed portlight type ii and iii are suitable
for fixing in all areas (i,ii,iii and iv) on the
yacht (hull, transom, superstructure and
The Gebo opening portlight type ii and iii
are suitable for fixing in areas iii and iv
(superstructure and cockpit) on the yacht
and can be used on ship type with design
category A (ocean-worthy).
All types of portlights meet the ISO 12216
For the correct screw length please refer to
the information sticker on the product.
Ordering Information
Portlight knob black with threaded spindle
Portlight knob white with threaded spindle
Portlight knob black
Portlight knob white
Sealing rubber type i (R610)
Sealing rubber type ii (R611)
Sealing rubber type iii (R352)
Delivery number
Screens available on request.
Gebo portlights
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