Lukas SC 557 - Manual (Page 15)

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Opening the device ( ):
Turn the star grip in a clockwise direction (in the direction of the
relevant symbol) and keep in this position.
Closing the device ( ):
Turn the star grip in an counterclockwise direction (in the direction
of the relevant symbol) and keep in this position.
“Dead-man’s” function:
Following release, the star grip automatically returns to the
central position, guaranteeing the full load-holding.
6. Operation
6.1 Preparatory measures
REMARK:
We recommend that during the deaeration, the attached aggregate for the
hydraulic supply should stand on a higher level than the body of the rescue
tool.
Recommended procedure for the deaeration of the rescue tool:
1.) open and close fully with the blade arms facing upwards.
2.) open and close fully with the blade arms facing downwards.
3.) open and close fully with the blade arms facing upwards.
4.) open and close fully with the blade arms facing downwards.
6.2 Operating the star grip (cover: item 1)
6.1.1 Commissioning
Before commissioning and following repairs, the equipment must be deaerated.
- Connect the equipment to the hydraulic pump (see chapter “Connecting the
equipment”).
- Open / close the blade arms of the equipment without any load at least twice (see
chapter “Operation of the star grip”).
6.1.2 Inspection of the pump unit
See separate operating instructions for the relevant unit (or for the hand pump).
REMARK:
Before each start-up of the hydraulic unit you have to make sure that the actuating
valves are set to depressurized circulation.
REMARK:
Before coupling the quick-disconnect couplings, the actuating valves of the
hydraulic unit are set to depressurized circulation.
If you use mono-couplings, you can also couple when the hoses are pressurized!