Service Manual
Series 45 J Frame Open Circuit Axial Piston Pumps
520L0607
• Rev AI • Sep 2013
10
Inlet pressure
Minimum pressure, continuous = 0.8 bar absolute [6.7 inches Hg vac.]
(at reduced maximum pump speed)
Minimum pressure, cold start = 0.5 bar absolute [15.1 inches Hg vac.]
Pressure compensator valve setting
Minimum:
100 bar [1450 psi]
Maximum:
310 bar [3770 psi] (depending on displacement)
For more information, refer to
Series 45 J Frame Axial Piston Open Circuit Pumps Technical Information
,
520L0676
.
1
Hydraulic fluid viscosity must be maintained within the prescribed limits.
2
As measured at the hottest point in the system, e.g. drain line.
Technical specifications
Hydraulic Parameters
Viscosity limits
Rating
mm
2
/s (cSt)
[SUS]
ν
continuous
minimum
9 [58]
maximum
110 [500]
ν
intermittent
minimum
6.4 [47]
maximum
(cold start)
1000 [4700]
Filtration
Required cleanliness level: ISO 4406 Class 18/13 or better. Refer to Danfoss publications
Fluids and
Filtration
BLN-9887 or
520L0463
and
Design Guidelines for Selecting and Maintaining the Required
Hydraulic Fluid Cleanliness
520L0465
. See
Fluid and filter maintenance
, page 17 for recommended fluid
and filter change intervals.
Case pressure
Maximum continuous: 0.5 bar [7 psi] Above inlet
Intermittent: 2 bar [29 psi] Cold start
Hydraulic fluid
Refer to Danfoss publication
Fluids and Filtration
BLN-9887 or
520L0463
. For information on
biodegradable fluids refer to
Biodegradable Hydraulic Fluids
,
520L0465
. See
Fluid and filter
maintenance,
page 17 for recommended fluid and filter change intervals.
Temperature range
1
Intermittent (cold start):
- 40° C [- 40° F]
Continuous:
82° C [180° F]
Maximum
2
:
104° C [220° F]
Fluid viscosity
