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5.4
Hydraulic safety
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Depressurize the system!
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Risk of injury due to oil temperatures greater than 50° C!
Hydraulic oil with a temperature greater than 50° C may result in burns or scalding.
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Risk of injury when switching the hydraulic power pack on!
Cylinders may advance and retract automatically.
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Always assemble the cylinders with the corresponding cover.
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Maximum permissible pressure for all devices included in the training package is
12 MPa (120 bar). In the case of double-acting cylinders, pressure could be
increased relative to the surface area ratio due to pressure boosting. With a surface
area ratio of 1:1.7 and a system pressure of 6 MPa (60 bar), it may amount to more
than 10 MPa (100 bar).
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Check the oil level at regular intervals. Unlubricated operation of the pump is not
permitted!
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When devices are started up initially, the oil level in the tank drops because the
devices and hoses are filled. If oil is no longer visible in the sight glass, hydraulic oil
must be added until the fill-level can once again be seen in the sight glass.
© Festo Didactic 8068243
Hydraulic power pack with load sensing variable displacement pump and constant displacement pump
Switch off the hydraulic power pack before working on the circuit.
Check the system using pressure gauges to make sure that the entire circuit is
fully depressurized.
Please note that energy may be stored in reservoirs, cylinders with spring load
and cylinders with weight load. Further information on this issue is available in
the data sheets and operating instructions included with the components.
Only reach into the setup when it's at a complete standstill.
Be aware of potential overtravel times for the drives.
WARNING
CAUTION
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