v1.0 22052012
14
GB
5.8 Two speed pump*
Two speed presses are equipped with automatic working speed changing circuit.
Approaching and return piston rod speed is twice higher as in single speed press, but when piston rod contact
to workpiece (or any obstacle) it’s speed is automatically reduced to » 2 mm/s. At the top of oil tank cover it is
located a lever and operator can manually set working speed (low speed only).
5.9 Protective screen controlled by a limit switch*
The machine can be equipped with a screen protecting against accidental access of the operator or
unauthorized personnel. Starting the press is possible after closing the screen. Every time the screen is opened,
it causes cut-off of supply to the electric engine of the hydraulic supply.
5.10 Working time
A standard machine is not designed for constant work, that is, it can work at an intensity of no more than 2
work cycles per minute, and no longer than 10 min of constant work when the speed change lever is in the
“WORKING MOTION” position. If this limit is not observed, it can lead to overheating of the hydraulic oil and
the operator may suffer burns.
6 Maintenance
6.1 Daily maintenance
• Remove all dust and debris from the press that could disturb its operation.
• When press operations are over, remove any dust or debris found on the working table.
• At the end of operations, the press and working table should be cleaned appropriately.
• Check the oil level and temperature.
• Check winch line is in perfect condition, is not twisted and in a right place.
6.2 Six monthly maintenance
• Inspect all hydraulic
fi
ttings and tighten any loose connections.
• Every 12 months or 1000 working hours, change the hydraulic oil (used oil should be warm when it is
drained).
• Check the screws connecting the cylinder assembly to the machine frame and tighten them, if necessary.
• In the event of oil leakage in the
fi
ttings, detach the
fi
tting and replace the seal. If this does not solve the
problem, replace the whole
fi
tting.
• Check the motor
fi
xing bolts and tighten, if necessary.
(* Dependign on version)
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