Handling 4-System - Komatsu PC128UU-2 Operation & Maintenance Manual

MACHINE OPERATIONS AND CONTROLS

HANDLING 4-SYSTEM

Never remove, install, or disassemble and repair any sensor. This will cause mistaken actuation of the
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interference prevention device.
Always contact your Komatsu distributor for repairs.
If any sensor if hit or any external damage is found, check the actuation condition of the automatic
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stop.
If any abnormality is found, please contact your Komatsu distributor.
Never carry out any work in which the sensors go below water.
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If any sensor should be immersed in water, check the actuation condition of the automatic stop.
When washing the machine, do not spray water directly on the electrical parts or the wiring connec-
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tors.
The auto-stop cancel switch must only be used for moving the machine to a safe place when there is
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an abnormality in the 4-system. It must not be used for any other reason.
When changing to the telescopic arm or long arm specified by Komatsu, ask your Komatsu distribu-
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tor to change the attachment.
If the attachment is changed from the standard work equipment, the 4-system will not work normally.
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If the work equipment is replaced by an attachment made by another company, please consult your
Komatsu distributor first.
3-90
WARNING
OPERATION