Komatsu H75051 Operation & Maintenance Manual page 99

OPERATION EXPLANATION OF COMPONENTS
FAN REVERSE ROTATION DISPLAY
When the radiator fan is set in manual or auto reverse rotation
mode, if the fan starts to rotate in reverse, fan reverse rotation
pilot lamp (A) lights up.
This lamp flashes while the rotation direction is being changed.
If the condition for changing the fan rotation direction is not sat-
isfied, changing condition satisfaction waiting pilot lamp (B)
lights up.
For details of the method of setting the fan reverse mode, see
"RADIATOR FAN MANUAL REVERSE MODE (3-59)" and
"RADIATOR FAN AUTOMATIC REVERSE MODE (3-61)".
PREHEATING PILOT LAMP
The preheating pilot lamp lights up when the automatic pre-
heating function of the engine is actuated, and goes out when
preheating is completed.
This lamp also lights up during manual preheating. The electri-
cal heater for engine preheating is actuated while this lamp is
lit.
AIR CONDITIONER DISPLAY
The air conditioner display shows the operating state of the air
conditioner.
MESSAGE DISPLAY
The message display lights up when there is a message from
Komatsu.
(A): There is unread message
(B): There is any read message to which no reply is made.
To read the message, see "MESSAGE DISPLAY (3-89)".
3-33