Palfinger PC 3800, Operating Manual

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Preparing for crane operation
Daily function check of safety equipment
Carry out the function check without load and with all extension booms retracted.
Emergency cut-off function check
Danger!
If the crane doesn’t stop after pressing the emergency cut-off button
or if other crane movements are still possible there is acute danger to
life.
Working with a defective emergency cut-off button is grossly negligent. Do not operate the crane and
contact a PALFINGER service partner.
•
Operate any crane function. The crane must move perfectly in all directions.
•
Press the emergency cut-off button while the crane is moving. The crane must come to a stop.
•
Again, operate any crane function.
The crane must not move.
•
Release the emergency cut-off button; The crane should move perfectly in all directions.
Refer also to chapter 5, "Emergency cut-off button".
Functional check of OS hydraulic overload protection
Always carry out a functional check without load before starting work:
•
Raise the main boom up to the limit stop at maximum speed. The overload protection system must
respond when the limit stop is reached (avoid this test position in working operation).
•
The movements indicated above must be blocked.
Danger!
If the overload protection system does not respond stop the
crane IMMEDIATELY, otherwise there is an acute risk of fatal injury.
•
Briefly operate the touch valve and lower the main boom.
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