Atlas Copco ZR37 - Page 42

Instruction book
2920 1472 03 42
Carbonate hardness
Closed cooling system: 50-1000 ppm CaCO
3
Open cooling system: 50-500 ppm CaCO
3
HCO
3
-
/ SO
4
2-
should be > 1
Ammonia
< 0.5 ppm
Copper
< 1 ppm
Iron and manganese
< 1 ppm
Organics
No algae.
No oil.
Suspended solids
Non-soluble particles, size < 1 mm.
< 10 ppm.