Kesla proG 20, Manual

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GRAPPLES – USER MANUAL 6
In case of accident with phone or power lines, consider what to
do. When you have to leave the machine, do not touch the
machine and the ground at the same time. Exit outside the
electrical field jumping both feet together.
Always stop the engine of base machine and take care that no
one connects power when servicing the grapple. Make sure that
hydraulic pressure is released from all parts of the grapple. Note
that the grapple head may fall down if the boom lowers or the
base machine moves.
Perform maintenance activities with due consideration and calm.
When changing components, connectors and hoses, use only
spare parts with sufficient pressure classification.
The hydraulic pressure measurement and adjustment can only be
performed by a service engineer familiar with hydraulics, using
great care and consideration.
The engine must be stopped when connecting pressure gauge,
adjusting valves, repairing the grapple etc., because service
engineer is close to the moving parts of the grapple. While
measuring pressure, the persons must be out of reach of the
moving parts of the grapple.
Raising the pressure settings out the range specified by
manufacturer will cause an overload situation which can break the
grapple.
Danger of accident!
Keep the hydraulic hoses in good condition. Change the broken
ones immediately. High-pressure oil spray from a broken
hydraulic hose or connector may penetrate under skin and cause
serious infection. In case of accident, contact physician
immediately.
When finishing work or stopping the engine always lower the
grapple head onto the ground or onto some other stable surface.
Notice that unwanted lowering of the crane may cause the
grapple falling down.
Staying under a hanging grapple is always prohibited without an
exception.
When finishing work, switch off the grapple. Switch off the main
power switch of the machine (if exists) when leaving the machine.
A blown fuse may be replaced only with a fuse of same size and
type.