Palfinger PK 23002, Operator'S Manual

Page: 45 / 94

Savety devices 4.2-1
4.2. Savety devices
Using safety devices can avoid accidents. They are for your protection therefore you should make sure
which of the below safety devices are available on your crane.
4.2-1 Emergency Off button
The Emergency Off switch is a safety device which when operated immediately brings the crane to a
standstill.
Emergency Off button
If an unexpected hazardous situation occurs during crane operation,
release all of the operating levers immediately and press the emergency
off switch until it clicks. All of the crane functions will then be blocked.
If the emergency off switch was pressed because of an emergency
situation, it must not be released until safe crane operation has been
guaranteed.
Every time before starting work a check of the Emergency Off function must be carried out:
• Operate a crane function and press the Emergency Off switch. The crane must immediately come
to a standstill.
• No further crane movements must be possible.
If the crane's movement is not interrupted, crane operation must be
ceased immediately and a service workshop visited!
4.2-2 Load moment indicator
A manometer with a three-colour scale is provided which indicates the load moment.
The red portion of the three-colour scale corresponds with an excessive and
potentially dangerous load moment. During work,
the manometer's needle should therefore always be in the green range of
the scale.
The yellow scale section of the moment gauge corresponds with conditions
near 90% of the maximum load permissible.
Deflections of the needle in the red section of the three-colour scale are
indicative of overload. The load moment must be reduced immediately
under such conditions (e.g., by pulling in the extension arms). It is essential
to keep an eye on the load moment indicator during work so that dangerous
overloading of the crane can be avoided.
When the manometer needle is seen in the red section of the scale, the
load moment must be reduced immediately to prevent dangerous
overloading of the crane.