Coolant Specification (M85 "Stainless Steel Version" Option); Inhibitors, Anti-Freeze, Biocides; Table 4-3 Overview And Application Of Coolant Additives - Siemens SIMOTICS FD 1LH1 Operating Instructions & Installation Instructions

NOTICE
Cooling water additives
Additives in the cooling water for antifreeze or corrosion protection can have a negative impact
on the heat transporting properties. The machine can overheat. Only operate the machine
with the contractually agreed cooling water quality.
See also
Service and Support (Page 161)
Additional documents (Page 167)
4.5.2

Coolant specification (M85 "stainless steel version" option)

Drinking or municipal water (option M85: Stainless steel version)
pH value
Chloride ions Cl
Sulfate ions SO
Nitrate ions NO
Dissolved solids
Total hardness
Electrical conductivity
Maximum size of dissolved substances
4.5.3

Inhibitors, anti-freeze, biocides

You can use the following anti-freeze, inhibitors and biocides in the stainless steel cooling
circuit:
Table 4-3 Overview and application of coolant additives
Inhibitor without anti-freeze effect Not necessary
Anti-freeze protection
SIMOTICS FD 1LH1
Operating Instructions 04/2016
-
2-
4
+
3
Anti-freeze used
Antifrogen N 20 % < X ≤ 45 %
Antifrogen L 25 % < X ≤ 48 %
Varidos FSK 25 % < X ≤ 45 %
4.5 Coolant specification
6.5 ... 9.5
< 200 mg/l
< 240 mg/l
< 50 mg/l
< 340 mg/l
< 1.7 mmol/l
< 2000 μS/cm
< 0.1 mm
Please note the following in particular
Inhibitor 0.2 ... 0.25 % of total volume!
For Antifrogen L and Varidos FSK, for the
same antifreeze protection, a higher con‐
centration is required than for Antifrogen N
Preparations for use
31