Installation / Commissioning
HYDAC Filtertechnik GmbH
en
Page 48
BeWa MRF6 3235897b en.doc
2006-05-22
ρ
υ
×
×
×
×
≈
∆
Q
d
L
bar
p
4
8
,
6
]
[
L = pipe length [m]
d = pipe internal diameter [mm]
Q = flow rate [l/min]
ʋ = kinematic viscosity [mm²/s]
⍴ = density [kg/dm³] mineral oil ≈ 0.9 kg/dm³
This applies to straight pipe runs and hydraulic oil. Additional threaded connections and pipe
bends increase the pressure differential.
Keep the difference in height between the pump and the oil level in the tank as small as
possible.
Hoses must be suitable for suction pressures of at least -0.5 bar.
Bottlenecks or narrow places in the connecting lines are to be avoided as the flow rate is
reduced and a cavitation hazard is posed.
The nominal width of the connecting line must correspond at minimum to the cross-sections
of the connector threads or the connector flange.
7 Commissioning
The MRF is supplied ex works without any filter elements. Prior to commissioning, the filter
elements have to be inserted in the housing. For more information, see the section on
Changing the Filter Elements
.
7.1 Installing
/
Changing the Filter Elements
When changing the filter elements make sure that the housing has been
depressurized and that the pump is switched off.
When changing the filter element, proceed as follows:
Switch off the pump.
Close off the shut-off valve on the suction and pressure side.
Relieve the pressure of the housing.
Carefully
open the air-vent
fitting in the cover.
