Komatsu PC220LC -8 Operation & Maintenance Manual page 71

DETAILED CONTROLS AND GAUGES
Basic Check Monitors
These monitors do not guarantee the condition of the machine.
Do not simply rely on the monitor when carrying out checks before starting (daily inspection). Always get off the machine and
check each item directly.
Displays basic items among the check before starting items that must be checked before starting the engine. If there
is any abnormality, monitor for the location of abnormality will light up.
(1) Radiator coolant level monitor
(2) Engine oil level monitor
Radiator Coolant Level Monitor
Monitor (1) warns the operator that there has been a drop in the
radiator coolant level.
If the radiator coolant is low, the lamp lights up red, so check
coolant level in the radiator and subtank, and add coolant.
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CAUTION
(3) Maintenance interval monitor
OPERATION