Setting up / installing the unit
OLFCM 15/30/45/60
en(us)
29 / 84
BeWa OLFCM 15-60 3595923a en-us 2018-06-28 .docx
2018-06-28
Notes on pipes and hoses
Make sure that no vibrations or stress/loading from other machinery and
equipment are carried over to the filter housing. If necessary, use expansion
joints.
The pressure loss in a hydraulic line depends upon:
•
Flow rate
•
Kinematic viscosity
•
Pipe dimensions
•
fluid density
The pressure loss can be estimated for hydraulic oils as follows:
Δp ~ 6,8 * L / d
4
* Q * V * D
Δ
p
= Pressure differential in [bar]
L
= Pipe length [m]
d
= Internal pipe diameter [mm]
Q
= Flow rate [l/min]
V
= Kinematic viscosity [mm²/s]
D
= Density [kg/dm³]
Mineral oil-based hydraulic fluid has a
density of ~ 0.9 kg/dm³.
This applies to straight pipelines and hydraulic oils. Additional threaded
connections and pipe bends increase the pressure differential. Additional
threaded connections and pipe bends increase the pressure differential.
Keep the height difference between the pump and the oil level in the tank as
low as possible.
Constrictions in the connections and lines should be avoided. This could
compromise suction output and cause cavitation .
Take note that the nominal size of the connected hoses/piping must be at
least as large as the inlet port sizes.
Make sure that no vibrations or stresses are carried over to filtration unit
when connecting the piping. Make sure that no vibrations or stress/loading
from other machinery and equipment are carried over to filter unit. Use hoses
or expansion joints if necessary.
