5 | Installation
12 | 36
Instruction Manual PUMA WP 0250-2000 D_EN_en
●
Make sure that the cooling water complies with the following requirements:
Min. supply capacity
l/min
2
Water pressure
bar
2 ... 5
Supply temperature
°C
+10 ... +25
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)
5.3
Filling Oil
NOTICE
Use of an inappropriate oil.
Risk of premature failure!
Loss of efficiency!
●
Only use an oil type which has previously been approved and recommended by Busch.
For oil type and oil capacity see
30].
