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W W W . B A L T I M O R E A I R C O I L . C O M . A U
M A R 2 1 0 - 2
Corrosion Protection
Long Term Care of Stainless Steel
Recommened Cleaning Procedure (cont)
System Cleaning
System Cleaning for RCF Models
Coil Cleaning for RCF Models
Weld By-product Cleaning
– 5% Sodium Hydroxide
– 5% Sodium Metasilicate
– 2% Sodium Carbonate
– 2% Tetra Sodium Pyrophosphate
– 0.5% Trisodium Phosphate
– 0.5% Sodium Nitrate
– 5-10% Butyl Cellosolve
Coil Cleaning for RCF Models
The outside of the heat exchange coil may require occasional
cleaning. The chemicals used must be compatible with the materials
being treated. For example, the standard coil outside is galvanized
steel. The inside of the coil is black carbon steel. For nned coils, the
coil cleaning must be careful not to damage the ns (outside of the
coils) and the coils themselves. For specic recommendations on coil
cleaning, contact a qualied consultant.
Weld By-product Cleaning
The installation and manufacturing processes commonly used for
eld assembly of steel piped systems may leave weld by-products
inside coils and connecting piping (especially in refrigeration
systems). It is common practice to install lters and/or strainers
that remove contaminants during initial system operation. Shortly
after system start-up, the lters and/or strainers should be cleaned
or replaced.
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