Ega Master 79921 Manual De Instrucciones página 19

WARNING - Never operate the hydraulic machine without a pressure control valve!
The system should not have more than 17 bar back pressure measured at the tool end of the
operating hoses. The system conditions for measurement are at maximum fluid viscosity of 82
centistokes (minimum operating temperature). The recommended hose size is 12 mm I.D. to 16 mm I.D. and a length of
15 m and 30 m.
The return hose of the machine must connect directly to the circuit return line and go straight through the oil filter,
thermal valve, and oil cooler to the reservoir. To prevent trapped or reversed pressure, fluid should not be returned
through a blocking or reversing valve.
The hydraulic pipe cutting machine cannot be operated with the hydraulic flow reversed. Supply (IN) and return
(OUT) hoses must be connected as marked on the sides of the tool ports.
NOTICE - Do not run the tool return hose through stack or directional valves.
If the circuit is operated from a stack valve, tap only the pressure port to the valve. Connect the tool
return directly to the return fluid line. Your hydraulic machine is a so called "open-center machine".
Operate open-center tools from open-center hydraulic circuits only. Operate closed-center tools from
closed-center hydraulic circuits only.
Protection and care of the machine
In addition to the safety precautions mentioned above, please observe the following specifications for protection and
care of the machine.
Always store the machine in a clean and dry area, where it is kept safe from damage and burglary. Always store the
machine in a way that important machine instructions, e. g. on labels and signs are always legible.
Replace hoses, couplings and other parts always by spare parts recommended by the manufacturer. Supply hoses
have to be designed for a minimum operation pressure of 180 bar.
Always use hoses, which have an oil resistant inner surface and an abrasion-resistant outer surface. When you are
next to electric conductors, always use clean, certified nonconductive and identified hoses.
The repair of the machine should only be executed by skilled personal. Ensure all coupling parts to be cleaned before
they are connected.
The hydraulic supply control valve has to be in the position "OFF", when hydraulic machines are connected or
disconnected.
If this is not done, damages to the quick-coupling and overheating of the hydraulic system may be created. Do not
exceed the flow rate of 45 l/min. This could cause quick failure of the internal sealings of the machine.
Instruction for underwater application
Prior to underwater work
• Check the machine is not leaking
• Check the functioning of all parts
• Spraying of all moving parts with spray OKS 8601 (or similar)
STARTUP
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