Siemens 6SL3210-1SB11-0UA0 [282/318] Anti corrosion additives inhibitors

Siemens 6SL3210-1SE24-5AA0 [282/318] Anti corrosion additives inhibitors
Cooling circuit and coolant properties
10.2 Coolant requirements
Manual
282 Manual, 01/2011, 6SL3097-4AC10-0BP2
10.2.2 Anti-corrosion additives (inhibitors)
Inhibitor without anti-freeze effect
Nalco 00GE056 (ONDEO Nalco; http://www.ondeonalco.com) must be used as an anti-
corrosion agent. The concentration of anti-corrosion agent in the cooling water should be
between 2,000 ppm and 2,500 ppm (200 to 250 ml/100 liters of cooling water).
A prerequisite for the inhibitor is the specified coolant, which must not contain any
magnesium carbonate. Control kits can be ordered from Nalco to check the inhibitor
concentration.
10.2.3 Anti-freeze additives
Antifrogen N (Clariant; http://www.clariant.com) is recommended as an antifreeze. The
proportion of antifreeze must be between 20% and 30%. This ensures frost protection in
temperatures down to -10 °C.
NOTICE
If the proportion of antifreeze added is greater than 30%, this can inhibit the transfer of heat
and prevent the units from functioning correctly.
NOTICE
Cooling water mixtures with Antifrogen N are highly conductive. In the event of leakage, the
insulating systems must be cleaned.
NOTICE
When EPDM hoses are used, oily anti-corrosion-agent additives must not be used because
such additives can corrode and destroy EPDM.
Note
You must always bear in mind that the kinematic viscosity of the cooling water changes
when antifreeze is added, which means that the pump power must be adjusted accordingly.
Antifrogen N contains corrosion inhibitors which permanently protect the metal in the cooling
system against corrosion. The proportion of Antifrogen N should always be >20%, otherwise
the mixture becomes corrosive.
Inhibitors and Antifrogen N must not be mixed.

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