Greenlee LRF 75 Manuel D'instructions page 9

Specifications (cont'd)
Hydraulic Power Source
Do not exceed the following hydraulic power source
maximums:
• Hydraulic flow: 30.3 l/min (8 gpm)
• Pressure relief setting: 138 bar (2000 psi)
• Back pressure: 13.8 bar (200 psi)
Failure to observe this warning could result in severe
injury or death.
Type of Hydraulic System .....Open-center or closed-center
Flow
Minimum ..........................................18.9 l/min (5 gpm)
Recommended .................................22.7 l/min (6 gpm)
Maximum .........................................30.3 l/min (8 gpm)
Filtration ............................................ 10 micron (nominal)
Pressure Relief Setting ........................ 138 bar (2000 psi)
Back Pressure (maximum)* .................. 13.8 bar (200 psi)
* 13.8 bar (200 psi) is the maximum agreed standard back
pressure for the HTMA (Hydraulic Tool Manufacturers
Association). Greenlee tool will operate satisfactorily
at this standard.
1. Maximum hydraulic fluid temperature must not
exceed 60 °C (140 °F). A sufficient oil cooling
capacity is needed to limit the hydraulic fluid
temperature.
2. Hydraulic flow must not exceed 30.3 l/min (8 gpm).
Install a flow meter in the return line to measure the
rate of hydraulic flow before using the tool.
3. Pressure relief valve setting must not exceed 138
bar (2000 psi) at your tool's maximum flow. Locate
the pressure relief valve in the supply circuit to limit
excessive hydraulic pressure to the tool.
Greenlee Tools, Inc.
Long-Reach Chain Saws (Foam-filled)
Hydraulic Schematic
RESERVOIR
PUMP
POWER SOURCE
Recommended Hydraulic Fluids
Use any non-detergent, petroleum-based hydraulic
fluid which meets the following specifications or HTMA
specifications.
S.U.S. @:
38 °C (100 °F) ...............................................140 to 225
99 °C (210 °F) ............................................ 40 minimum
Flash Point ................................170 °C (340 °F) minimum
Pour Point ..................................-34 °C (-30 °F) minimum
9
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
FILTER
(10 micron)
RELIEF
COOLER
VALVE
138 bar
(2000 psi)
T
CONTROL
VALVE
FLOW METER
P
TOOL