Operator’s Handbook for
Fassmer rescue boats Type RR 4.2
Document 40.0420-019.01.01.0
Art. No. 135897
Mod. 0 Lange/WZ 03.11.2006
44
Laminate repairs:
Caution:
Rescue boat damages must be repaired by a FASSMER-
authorised workshop. The following directions are for repairs
where there exists no available workshop. In this case, an
authorised workshop, Fassmer-certified service engineer or
surveyor must check the rescue boat as soon as possible, to
decide about further repairs.
Attention:
Rescue boats must always have sufficient strength, to be
lowered to the water fully manned!
!
Remove all broken and loose parts from the damaged area with the use
of a chisel or saw (fig. 1). On cracks which are not fully penetrating the
laminate remove laminate in crack area as deep as the crack can be
seen.
!
The edges of the hole must be bevelled and sandpapered to ensure a
large overlap and good attachment (abt. 100mm). In case of full
penetrating holes a plate of wood, cardboard or sheet metal, covered
with wax, paper or foil should be propped against the hole to keep the
resin in (fig. 2).
!
The polyester resin is to be mixed with 1.5-2% Cyclohexanonperoxid
(hardener). The higher the percentage of the hardener, and the higher
the outside temperature is, the faster the resin will harden. Using the
above percentages and with an outside temperature of 14-20°C the
mixture will have a working time from 15-30 minutes.
!
Woven rowings and chopped strand mats must be cut to a size suitable
for the hole, laid tier upon tier, and soaked with the mixed resin. There
should be enough glass that the original thickness of the area is
achieved. Further add additional 30% of the layers already applied of
glass and roving. Apply the resin using a brush. For larger damages a
grooved roller may be used to smoothen the surface, and remove any
air bubbles (fig. 3).
!
The resin will harden in 2-8 hours depending on the outside
temperature. Unevenness can be touched up, cemented and painted
(fig. 4). Keep in mind, to allow hardening, a minimum temperature of
15°C is needed, and that the spot to be repaired must be dry, free of
grease and well sanded. Brushes and other equipment must be
cleaned immediately after use in acetone!
Caution:
Ensure good ventilation when working with fibreglass. Avoid
direct contact with skin when handling resin.
