LOAD KING 80-160, Руководство оператора

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182
80-160
Operating Instructions
5. Swing the boom over the load.
Upper structure swing is controlled by the swing joystick. To swing the upper structure to the
RIGHT (CW), move the LH joystick to the direction of required swing which requires moving the
joystick to the RIGHT. To swing LEFT (CCW), move the LH joystick to the LEFT. Swing speed
increases as the lever is moved further side to side on LH joystick. Swing speed also varies with
the engine speed.
Before attempting to swing the upper structure, make sure the swing brake is not set and the swing
lock is not engaged. Be certain that no obstructions will block the swing.
Stopping the swing too abruptly will cause the load to oscillate and impose side
loads on the boom. Because side loading can damage the boom, ALWAYS START
AND STOP SWINGS GRADUALLY.
When ready, try for a smooth, controlled, safe swing. The swing should be SLOW. Start the swing
SLOWLY and allow the load to build up only enough momentum to carry it through to the point
where it is to be lowered.
Begin slowing the swing in advance of the point where the load is to be lowered. Slow the swing
GRADUALLY, so that it appears to “coast” to a stop over the desired spot.
GRADUALLY slow the swing by use of the swing lever. First, move the lever to the neutral position
and then VERY SLOWLY into the opposite swing direction position as required to slow the swing.
Apply the swing brake, with the foot pedal, when the swing is stopped or when emergency situations
dictate that the swing be terminated abruptly.
If properly executed, the load will hang motionless when the swing is terminated. If the load is
oscillating, the swing was made too rapidly and/or stopped too abruptly.
Never pull sideways with a crane boom. Crane booms are not designed for
excessive side pull and may collapse if subjected to excessive side loading.
6. Extend the boom to the desired length. Do not extend the boom further than necessary to perform
the lift. EXTEND the boom by pushing the top portion of the LH foot pedal FORWARD and RETRACT
by pushing lower part of the LH foot pedal rearward.
While extending the boom, be sure to pay out sufficient hoist rope to prevent the
hook block from being drawn up to the boom peak. The force of the extend cylinders
can easily break the hoist line, dropping the hook block and load which may result in
personal injury or property damage.
The boom extend function on this crane has two positions and two speeds. When the pedal is all
the way forward, the regenerative mode provides increased speed. With the pedal approximately
on half of the way forward, increased “PUSH” is available at reduced speed.