KAESER ESD.2C - Tab. 23 Specification: Heat Exchanger (Option K9); Tab. 24 Cooling Water Quality

ESD 442
Unsuitable cooling medi‐
um
Salt water
Consult KAESER on the suitability of water.
Tab. 23 Specification: Heat exchanger (Option K9)
2.15.2.2 Cooling water quality
Characteristics/content Closed cooling sys‐
tem
Open cooling system
pH value 6,0 – 9,0 6,5 – 9,0
Total hardness [°dH] 0 – 20 0 – 20
Carbonate hardness [°dH] <20 <4
Chlorides (Cl) [mg/l] <500 <250
Dissolved iron (Fe) [mg/l] <0,5 <0,2
Sulphate (SO
4
) [mg/l] <300 <300
HCO
3
/SO
4
ratio >1 >1
Electrical conductivity [µS/cm] 10 – 2500 10 – 2500
Ammonia (NH
4
+
) [mg/l]
<2 <1
Manganese (Mn), dissolved [mg/l] <0,1 <0,1
Glycol [%] 20 – 40 —
Solid particles [mm]
(Particle size)
<0,2 <0,2
Bacterial count [CFU*/ml] 10 000 10 000
Suspended solids [ppm]
(portion of undissolved matter)
<20 <20
* CFU: colony-forming units
Tab. 24 Cooling water quality
2 Technical Specifications
2.15 Water cooling
14
Service Manual Screw Compressor
ESD 442/14 bar (abs) SFC SIGMA CONTROL 2 ESD_2C_10357405_10–LIN_00 E