Komatsu PC220LC -8 Operation & Maintenance Manual page 199

MACHINE OPERATIONS AND CONTROLS
Operation After Completion Of Warm-Up Operation
1. Check that hydraulic oil temperature monitor (7) displays the
correct temperature.
(A) Display when temperature is correct: Monitor
background (C) is blue
(B) Display when temperature is low: Monitor background
(C) is white
2. Push working mode selector switch (20) of the machine
monitor to select the working mode to be used.
For details of the procedure for selecting the working mode,
see "Working Mode Selector Switch (PAGE 3-26)".
Working mode monitor display
1) P mode
For heavy-duty operations
2) E mode
For operations with emphasis on fuel economy
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OPERATION