Charge filtration
The pressure filter is remotely mounted in the circuit after the charge pump, as shown in the
accompanying illustration.
Filters used in charge pressure filtration circuits must be rated to at least 34.5 bar [500 psi] pressure.
Danfoss recommends locating a 100 - 125 µm screen in the reservoir or in the charge inlet line when
using charge pressure filtration.
A filter bypass valve is necessary to prevent damage to the system. In the event of high pressure drop
associated with a blocked filter or cold start-up conditions, fluid will bypass the filter. Avoid working with
an open bypass for an extended period. We recommend a visual or electrical bypass indicator. Proper
filter maintenance is mandatory.
Charge filtration
Reservoir
Filter
with bypass
Charge
pump
Charge relief
valve
To pump case
To Low Pressure
side of loop
and servo control
Strainer
P106279
Suction filtration
The suction filter is placed in the circuit between the reservoir and the inlet to the charge pump as shown
in the accompanying illustration.
Suction filtration
Reservoir
Filter
Charge
pump
Charge relief
valve
To pump case
To low pressure
side of loop
and servo control
Strainer
P106352
Technical Information
LPV Axial Piston Pumps
System design parameters
16 |
©
Danfoss | September 2017
520L0954 | BC00000044en-US0102