The 3 R's of prolonged coil life, peak performance

Repairs
Send Anderson- Snow your leaky, worn or frozen coils for expert repairs. Your units will be thoroughly tested the reliable ANSCOR™ way and an estimate presented. All work can usually be completed within one week, perhaps even within one day.

When coils are accepted for repairs they are mechanically or chemically cleaned where they are to be brazed. Metal parts that are obviously old, discolored or coated with oil etc. are brightened.

Then and only then will fluxes be effective in removing small oxides. Depending on the types of coils, ANSCOR™ uses either high-temperature silver brazing alloys or brazing rods with nickel content to get the job done. And, when the repairs are finished, coils are pneumatically tested up to 225lbs. Air under water. They also may be hydrostatically tested from 300 to 1,000 lbs.

Rebuilding
Have you had problems with pinhole leaks at the tube joints? ANSCOR™ provides the solution by rebuilding your old coils with ASTM copper or steel headers. The cost normally is less than one-half of new coils.

When coils are to be rebuilt they may be fitted with new headers fabricated from steel, copper or copper alloys. Header holes are milled to conform to the tube centers of coil cores.

Strong silver-brazed joints are achieved by maintaining joint tolerances between tube and header hole. Every rebuilt coil is finally tested to the exact specifications of new ANSCOR™ coils.

Replacements
Coils that can't be repaired or rebuilt can, however, be replaced to meet the most precise requirements. When you replace with ANSCOR™ coils, costly changes to sheet metal and piping are not necessary.

When coils must be replaces overall casing dimensions will match your original unit, regardless of size or type of metal.

As the leader in custom, replacement and special application heating and cooling coils, ANSCOR™ will improve casing design, simplify installation in an existing space and duplicate or adjust connection sizes and positions.

Whether it be a simple thin core with no channels for duct mounting or a complex metal casing adaptable to either a package unit or built-up system, Anderson-Snow has the technology and skills to do the job for your company.

Further, ANSCOR™ uses the heaviest metals in its replacement coils, certifies them and provides official documentation upon request.

Terms:
Brazing - the joining of metals together with the use of heat and filler metal (brazing rod). The melting temperature of the brazing rod will be above 800 F, but below the melting point of the metals being joined.

Soldering - the joining of metals together with heat and a filler metal (solder) whose melting temperatures would range form 300 to 500 F. The base metals may only have to be heated to temperatures slightly above the melting point: and in the case of copper or copper alloys, below the annealing point.

Joints - Joints that requires high strength must be brazed, rather than soldered. The term "hard solder" refers to brazing rods. The term "soft solder: refers to filler rods containing lead, tin and other alloys having melting temperatures below 400 F.