BSD 40 BSD 50 BSD 60
Pressure drop [psi] 3 3 4
Tab. 24 Cooling water temperature (ΔT=20°F)
Cooling water temperature rise 50 °F
BSD 40 BSD 50 BSD 60
Max. permissible inlet
temperature [ °F]
68 68 68
Water flow rate [gpm] 7 8 13
Pressure drop [psi] 5 6 11
Tab. 25 Cooling water temperature (ΔT=50°F)
Cooler specification
BSD 40 BSD 50 BSD 60
Material 1.4401 1.4401 1.4401
Braze Copper (Cu) Copper (Cu) Copper (Cu)
Maximum working pres‐
sure [psig]
(cooling water)
145 145 145
Max. permissible dis‐
charge temp. [ °F]
158 158 158
Unsuitable cooling medi‐
um
Seawater
Consult KAESER before using cooling water solutions.
Tab. 26 Cooler specification (option K2)
2.15.2 Cooling water quality
Oil may contaminate the cooling water if a leak occurs.
➤ A special heat exchanger must be used for heating drinking water.
The specific heat capacity and required flow rate of the cooling water changes if antifreeze is
added.
➤ Consult authorized KAESER Service representative to ensure optimum cooling-system
performance.
It is imperative that measures for cooling water treatment and filtration are implemented.
KAESER can provide the names of companies specializing in cooling water analysis and the supply
of suitable treatment plant.
Characteristics/content Value
pH value 7,5–9
Hardness [°dH] 4,0–8,5
Chloride (Cl) [mg/l] <150
Free chlorine gas (Cl
2
) [mg/l] <1
2 Technical Data
2.15 Water-cooling
12
Service Manual Screw Compressor
BSD 9_5708 08 USE
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