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Specifications — Hydraulic Power Source (cont'd)
Any hydraulic power source used with this tool must meet the following requirements:
Type of Hydraulic System ............................................................... Open-Center or Closed-Center
Flow - Minimum ................................................................................................... 8 gpm (30.2 l/m)
- Recommended .......................................................................................... 9 gpm (34.1 l/m)
- Maximum ................................................................................................ 10 gpm (37.9 l/m)
Operating Pressure - Minimum ........................................................................ 1000 psi (69.0 bar)
Pressure Relief Setting ................................................................................... 2000 psi (137.9 bar)
Filtration ........................................................................................................... 10 Micron (Nominal)
Back Pressure - * Maximum ............................................................................... 200 psi (13.8 bar)
*
200 psi (13.8 bar) is the maximum agreed standard for the Hydraulic Tool Manufacturers Association (HTMA).
Greenlee Fairmont hydraulic tools will operate satisfactorily at this standard.
1. Maximum hydraulic fluid temperature must not exceed 140 F (60 C) at the maximum expected ambient tem-
perature. A sufficient oil cooling capacity is needed to limit the hydraulic fluid temperature.
2. Maximum hydraulic flow must not exceed 8 gpm (30.2 l/m). Install a flow meter in the return line to test the rate
of hydraulic flow in the system before working the tool.
3. The pressure relief valve must not exceed 2000 psi @ 8 gpm. The pressure relief valve must be located in the
supply circuit between the pump and tool to limit excessive hydraulic pressure to the tool.
4. Figure 3 shows a typical hydraulic power source being used with the tool.
RESERVOIR
Recommended Hydraulic Fluids
Any non-detergent hydraulic fluid which meets the following specifications or HTMA specifications may be used.
S.U.S. @ 100 F (38 C) ......................................................................... 140 to 225
Flash Point ...................................................................... 340 F min (170 C min)
Pour Point ........................................................................ -30 F min (-34 C min)
Greenlee Textron / Subsidiary of Textron Inc.
- Maximum ..................................................................... 2000 psi (137.9 bar)
Hydraulic Schematic
(10 MICRON)
RELIEF
VALVE
2000 PSI
CONTROL
VALVE
PUMP
POWER SOURCE
@ 210 F (99 C) ...................................................................... 40 minimum
49200 Chain Saw
Figure 3
FILTER
COOLER
T
FLOW METER
P
8
4455 Boeing Dr., Rockford, IL 61109-2988
TOOL
815/397-7070
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