For Descaling Boilers :
For initial descaling, mix 1 part “Stanrose® Liquid Descaler” with 5 parts water in the system. Later cleaning may require less concentration. Isolate unit to be cleaned to protect valves and avoid possible contamination of rest of system. Fill boiler with “Stanrose® Liquid Descaler” and water at a 1:5 to 1:20 ratio. Heat the water to 60oC-80oC (140oF-190oF) and circulate for about 4 hours and then check the tubes. If descaling is not complete, refill the boiler with “Stanrose® Liquid Descaler” and water and repeat. Drain the boiler and flush with water pressure to remove all the scale and sludge. Drain and fill the boiler at least 3 times.
For Descaling Water Towers :
Shut tower down and use high pressure water to hose out mud, silt and slime. Isolate the unit to be descaled to protect valves and avoid possible contamination of the rest of system. Lower water level to just the amount required for circulation. Add “Stanrose® Liquid Descaler” to water in the tower at the ratio of 1 part in 5 parts of water. Add enough “Stanrose® Liquid Descaler” to maintain the pH from 1.5 to 2.5. Continue adding, as required, to maintain proper pH level for about 4 hours. The circulating solution should be yellow in color. If the solution while circulating turns blue, more “Stanrose® Liquid Descaler” needs to be added. Drain the system, flush and fill twice and check pH of water to be certain all “Stanrose® Liquid Descaler” has been removed.