Kato PREMIUM CITYRANGE CR-200RF, Instruction Manual

Page: 306 / 342

- 277 -
Cr
ane
op
er
ation
24. Crane operation
3) Watch the safety level bar graph to confirm safety as the independent controls are used to carefully slew the
crane to the desire position. However, if there is a risk of becoming overloaded or entering the slew-restricted
region, stop slewing there to avoid the danger.
Only use the ACS emergency switch in emergency situations, such as when the "slewing stop
system" malfunctions and does not allow slewing within the rated load range or slewing within
the permitted slewing region. Furthermore, even in such situations, slew very cautiously, making
sure to continuously monitor the safety level bar graph and ACS display for restricted slewing
regions to confirm safety.
(511A-1131-0E)
Always obtain permission from the site safety manager before turning the ACS emergency
switch to "release" for slewing in an emergency. Furthermore, contact your authorised KATO
dealer to request repair.
(511A-1132-0E)
NOTE
Even if the ACS emergency switch is turned to "release", the ACS will continue to emit the voice warnings "Caution
when slewing", "Danger maximum lifting capacity", "Slewing limit reached", and "Danger overload", chime
warnings, and emergency two-tone beep warnings
(
assuming the ACS is functioning normally
).
NOTE
If the ACS emergency switch is used to release the "slewing stop system," inertial slewing drift is controlled
based on the "slewing free/lock switch" position, located on the side panel.
(2) If slewing does not stop when overloaded
If the crane is level and yet slewing does not automatically
decelerate when the safety level bar graph approaches the yellow
zone and does not stop even after reaching the red zone, use the
following procedure to operate the crane and avoid danger.
1) If slewing does not automatically decelerate when the safety
level bar graph approaches the yellow zone, move the slewing
control lever to the neutral position, while keeping a close watch
on the load movement, and let the engine idle.
2) If slewing doe not decelerate adequately and appears as though the safety level bar graph indicator will not stop
within the yellow zone, forcibly stop the slewing motion by operating the lever in the opposite direction, being
careful not to let the load swing.
3) If it is necessary to keep slewing in the same direction, keep slewing stopped and raise or retract the boom until
the safety level bar graph enters the green zone, then use the independent slewing controls to slowly and
cautiously slew the crane to the desired position, while carefully monitoring the safety level bar graph indicator.