Greenlee PVA0021 Manual De Instrucciones página 7

Specifications (cont'd)
Hydraulic Power Source
Do not exceed the following hydraulic power source
maximums:
• Hydraulic flow: See the product specifications
• Pressure relief: 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
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 Utility tools will operate satisfactorily at this standard.
Hydraulic Schematic
PRESSURE
T
POWER
SOURCE
P
2,000 PSI
FLOW
ON/OFF
VALVE
Greenlee / A Textron Company
MEDIUM
T P
INTENSIFIER
HOSES
4,000-
10,000 PSI
P T
FLOW
ON/OFF
VALVE
HIGH
PRESSURE
PUMP
4,000-
10,000 PSI
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 5 l/min (1.32 gpm).
Install a flow meter in the return line to measure to
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.
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
OUT
IN
HIGH
PRESSURE
T
HOSES
OUT
P IN
DIRECT CONNECT
DOUBLE ACTING
P
SYMBOL FOR
T
DISCONNECT COUPLER
7
4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
PVA0021 • PVA0022
SINGLE
ACTING
VALVE
P
R
VALVE
P
HIGH
PRESSURE
HOSES
P
T
P
TOOL
DIRECT
COUPLING
P
T
P
TOOL
REMOTE
COUPLING