Clayton Feedwater Treatment Manual

Coil Guard 1

Coil Guard 1 is a boil-out product designed to remove residual mill scale, oil, and dirt that may remain after coil manufacture. It is to be used prior to the start-up of new generators, as well as, new coils. Directions for use 1. Using soft water, flush out the feedwater tank and generator system. 2. Refill feedwater tank with soft water and add the appropriate amount of Coil Guard 1 to the tank. Refer to “Dosage Instructions,” below, for dosages. The product may be added through any opening in the feedwater tank with a funnel or be pumped in with a transfer pump, or chemical feed pump. Note: using the chemical feed pump may take four to eight hours to add the product. 3. Short fire the generator to raise the water temperature to about 180 o F (82 o C). 4. Recirculate the water for two hours. Keep the steam header closed, but the atmospheric vent open. 5. Shut down the generator and drain the feedwater tank and generator. 6. Fill feedwater tank with soft water and rinse. Continue this rinsing process until the water is clean with no visible sediment. 7. With the generator filled with soft water, add the appropriate amount of Coil Guard 2 to the system. 8. Recirculate the Coil Guard 2 solution for 2 hours and short fire the generator to raise the water temperature to around 180 o F (82 o C). 9. Drain the Coil Guard 2 solution from the system followed by a rinse with fresh soft water. 10. Fill the feedwater tank with soft water and add the appropriate Coil Guard product; then, start the generator for normal operation. Dosage Instructions 0.5–1.0% of system capacity (capacity = water in coil + water in feedwater tank) Benefits of Coil Guard 1 Removes mill scale, oil, and dirt. Prepares metal surface for proper corrosion protection with Coil Guard Products. Product Data Appearance: dark brown Density: 9.25 lbs/gal. pH: 12.0 Flash point: none

A-7

04/12/2013

CoilGuard_b2.fm