Danger Zones During Use - Kesla 2010 User Manual

Timber handling crane
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- the surface must be sufficiently strong and steady.
- rotation of the stabilizer leg must be prevented with a locking pin (against tipping hazard)!
- check that the rear mounting bracket has been locked to the vehicle with a chain.
* Always connect the return hose before the pressure hoses. Make sure that it has been con-
nected; otherwise the control valve may become damaged.
* After installation there could be air in the hydraulic system which causes sudden and uncontrolla-
ble movements. Remove the air by brining all the cylinders carefully to the extreme positions 4-5
times.
* Check before switching on the pressure that all the crane's control levers are in the middle posi-
tion and that they also return to the middle position.
* Always apply parking brakes for the time of loading. If necessary, place blocks in front of wheels.
* Stabilizer legs are operated from a valve attached to the base or from the control position by re-
mote control.
* Spread out the Stabilizer legs as wide as possible to achieve good standing stability. If this is not
possible, start loading with small loads.
* The stabilizer legs are fitted with pressure-controlled check valves, so they hold in case of a pos-
sible overload or hose failure. The stabilizre legs are prevented from turning by pin locking, if nec-
essary. (For example, a stand-mounted crane is removed from the truck to its stabilizer legs). Pin
locking cannot be used during working.
* Please note that when the load increases, most of the weight goes to the stabilizer legs because
the truck springs have been lightened by stabilizer legs. As a result, it is recommended to shorten
the stabilizer legs in the mid of loading, in which case the weight shifts to the truck wheels.
* Avoid loading on a sloping surface. If this is not possible, use extreme caution and lift small loads.
When loading uphill, please remember that the pressure relief valve of reversing cylinders can be-
come overloaded and the load can escape downhill and cause an incident.
* The aggregate's standing stability is at its weakest when the load space is empty. When the ag-
gregate begins to fall, lower the grapple immediately to the ground. Do not drop the load by open-
ing the grapple.

2.3.1 Danger zones during use

* The label is big, attached to both sides of the hinged boom and indicates the danger zone during
operation.
Make sure that there are no unauthorized persons in the danger
zone during loading.
SAFETY INSTRUCTIONS
11

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2010t

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