5 | Installation
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Motor + Booster cooling (optional)
CWI
CWO
CWI
Cooling water inlet
CWO
Cooling water connection
The cooling connection type depends on the application. Seek advice from your Busch
representative.
• Connect the cooling water connections (CWI / CWO) to the water supply.
Connection size:
– G1/2 for the cooling water inlet and outlet on the motor (CWI / CWO)
– G1/2 for the cooling water connections on the covers (CWC)
• Make sure that the cooling water complies with the following requirements:
Min. supply capacity
l/min
4
Water pressure
bar
2 ... 5
Supply temperature
°C
+5 ... +30
Required pressure differential across supply
and return
bar
≥
1
• To reduce the maintenance effort and ensure a long product lifetime we recommend
the following cooling water quality:
Hardness
mg/l (ppm) < 90
Properties
Clean & clear
PH value
7 ... 8
Particle size
µm
< 200
Chloride
mg/l
< 100
Electrical conductivity
µS/cm
≤
100
Free chloride
mg/l
< 0.3
Materials in contact with the cooling water Stainless steel, copper and cast iron
NOTE
Water hardness unit conversion.
1 mg/l (ppm) = 0.056 °dh (german degree) = 0.07 °e (english degree) = 0.1 °fH (french
degree)