Installation and Maintenance Manual form 185
Page 15
7.0 REPAIR
For a unit in warranty, attempt no repairs without first
contacting the manufacturer, otherwise your warranty will
be void.
For a unit out of warranty, if the unit is accidentally damaged
while in use, you can make minor shipyard repairs as follows:
STRAIGHTENING
If the tubes are accidentally bent, they can be straightened
with a hard wood block and a mallet. See Figure 24.
FIG.24 Straightening tubes with a wooden block &
mallet
COPPER-NICKEL GRIDCOOLER® KEEL COOLER
REPAIRS
BRAZING:
Drain the cooler before brazing. Clean the area or joint to be
brazed thoroughly with a good degreasing solvent followed
by wire brushing. The braze wire should be 56% silver, AWS
A5.8 BAg-7. See Figure 25.
FIG.25 Brazing repair
TIG WELDING:
C70600 copper-nickel or monel 67 wire may be used.
TEMPORARY REPAIR
For temporary repairs, liberally apply an epoxy compound.
Before applying the epoxy compound, clean the surface of
the GRIDCOOLER unit and relieve any internal pressure.
For major repairs not covered by our Limited Warranty,
contact us. Give us a complete description of the damage,
and we will tell you if and how your unit can be repaired.
TUBE COUPLING REPAIRS
A damaged section of D or C tube can be replaced with two
couplings and a replacement length of tube brazed in place.
FIG.26 Replacing a section of tube
A single coupling can be cut or split, slid over the tube, and
brazed into place to patch a hole in a tube.
FIG.27 Patching a hole in a tube
ALUMINUM GRIDCOOLER KEEL COOLER REPAIRS
TIG WELDING:
Drain the cooler before welding. Clean the area or joint to be
welded thoroughly with a good degreasing solvent followed
by stainless steel wire brushing. The aluminum filler rod used
in the GRIDCOOLER Keel Cooler is R 5554 aluminum wire.
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