IOM SYSCW AR R513A (IOM CWAR 02 N 1GB/12.21)

English
16 SYSCW-AR R513A
Correct water treatment is critical, and particular care must be taken to ensure that the type of
treatment utilized is appropriate.
The recommendations of a company specializing in such matters must be sought and applied.
The manufacturer or their representative cannot be held liable in the event of the use of water
that is untreated or of nonconforming quality.
Caution
If the water circuit is to be drained for a time exceeding one month, the circuit must be fully
charged with nitrogen to prevent any risk of corrosion by differential venting.
Caution
THE WARRANTY DOES NOT COVER DAMAGE DUE TO CORROSION RESULTING FROM ELECTROLYTIC
PHENOMENA.
Caution
The SYSCW-AR must not run on a network with open loops, likely to cause incidents related to
oxygenation, or with non treated table water.
Caution
12. HYDRAULIC LINKS
12.1. WATER QUALITY
The water must be analyzed; the hydraulic network system installed must include all elements necessary
for water treatment: lters, additives, intermediate exchangers, drain valves, vents, check valves, etc.,
according to the results of the analysis.
Using improperly treated or non treated water in the SYSCW-AR may cause scaling, erosion, corrosion or
algae or sludge deposits in the exchangers. Refer to a specialist skilled in water treatment to determine
any treatment to apply. The manufacturer will not be held liable for damages caused when non treated or
improperly treated water, demineralized water, salty water or sea water are used.
Apply the following guidelines :
² No NH
4
+
ammonium ions in the water, highly detrimental to copper. <10mg/l
² Cl- chloride ions are detrimental to copper with a risk of puncture by picking corrosion. <10mg/l.
² SO
4
2-
sulphate ions may cause perforating corrosion. < 30mg/l.
² No uoride ions (<0.1 mg/l)
² No Fe
2+
and Fe
3+
ions, particularly in case of dissolved oxygen. Fe< 5mg/l with dissolved oxygen <
5mg/l. The presence of these ions with dissolved oxygen indicates corrosion of steel parts, likely
to generate corrosion of copper parts under Fe deposits, particularly in the case of multitubular
exchangers.
² Dissolved silica: silica is an acid element of water and may also cause corrosion. Content < 1mg/l.
² Water hardness: Values between 10°fH and 30°fH may be recommended. This facilitates scaling
deposits likely to limit copper corrosion. Excess TH values may lead to clogging the pipes.
² TAC<100
² Dissolved oxygen: Prevent any sudden change in the water's oxygenation conditions. Also, avoid
deoxygenating water by sparging inert gas as well as overoxygenating it by pure oxygen sparging.
Disturbing oxygenation conditions destabilizes copper hydroxides and particle salting-out.
² Electrical Resistivity - Conductivity: The higher the resistivity, the slower the corrosion. Values above
3000 ohm/cm are preferred. A neutral environment favours maximum resistivity. For electrical
conductivity, values around 200-600 S/cm can be recommended.
² pH: neutral pH at 20°C (7 < pH < 9)