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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)
After
underwater work
• Clean the machine thoroughly
• Dry the machine by blowing it with compressed air
• Spraying of all moving parts with spray OKS 8601 (or similar)
For additional information look at the specific operation and maintenance instruction. For a long life we
recommend regular (3-monthly) general overhaul by the manufacturer.