For a
GRIDCOOLER® in
warranty, attempt no repairs without first contacting the manufacturer, otherwise your warranty will be void.
For a
GRIDCOOLER out of
warranty, if the unit is accidentally damaged while in use, you can make minor shipyard repairs as follows:
 1. Straightening:
If the tubes are accidentally bent, they can be straightened with a hard wood block and a
mallet. See Figure 24.
COPPER/NICKEL
GRIDCOOLER REPAIRS
2. Brazing:
Drain the
GRIDCOOLER
before brazing. Clean the area or joint to be brazed thoroughly with a good degreasing solvent followed by wire brushing and or sandblasting. (See section 3 under
Cleaning.) The silver alloy used in the
GRIDCOOLER
is "Handy & Harman," 3/32 in. (2.24 mm) diameter Braze 560 wire. Use "Handy & Harman" Flux, the low temperature brazing type. See Figure 25.
NOTE: Braze 560 wire and Flux are available from Lucas Milhaupt, call (414) 769-6000 for a
dealer near you. 
ALUMINUM
GRIDCOOLER REPAIRS
3. Tig Weld:
Drain the
GRIDCOOLER
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
is R 5554 series aluminum, 3/32 in. (2.24 mm) diameter wire.
TEMPORARY REPAIRS
For temporary repairs, liberally apply an epoxy compound similar to Devcon UW for under
water and Red Hand for above water repairs.
Before applying the epoxy compound, clean the surface of the
GRIDCOOLER
and relieve any internal pressure. Devcon UW is available from the Devcon Corporation, call (508) 777-1100 for a dealer near you. Red Hand is available from the International
Paint Company, call (504) 943-8871 for a dealer near you.
For major repairs not covered by Fernstrum's Limited Warranty, contact
Jastram Technologies Ltd. by Phone (905) 641-2587 or Fax (905) 641- 5267. Give us a complete description of the damage, and we'll tell you if and how your unit can be
repaired.
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