Komatsu WA470-5H Operation & Maintenance Manual page 299

ATTACHMENTS, OPTIONS
MODE SELECTOR SWITCH
This switch (4) is used to select the vents.
! The vent position can be selected from five modes: FACE,
FACE/FOOT, FOOT, FOOT/DEF, DEF.
! When this switch (4) is pressed, the display on monitor
panel (7) changes in turn, and the air blows out from the
vents shown in the display.
! During automatic operation, the vents are automatically
selected.
AUTO SWITCH
With this switch (5), the air flow, vents, and air source
(RECIRC/FRESH) are automatically selected according to the
set temperature.
This switch also acts as the air conditioner main switch.
! When auto switch (5) is pressed, the lamp at the top of the
auto switch lights up and the auto mode is displayed.
! When the fan switch is pressed, the lamp at the top of the
auto switch goes out.
! Normally, press this switch, then use temperature control
switch (3) to set the temperature, and run the air conditioner
under automatic control.
! When the control is switched from automatic operation to
manual operation, it is possible to operate the switch to
change the air flow, vents, and air source (RECIRC/
FRESH). When the manual control is used, the lamp at the
top of the auto switch goes out.
RECIRC/FRESH SELECTOR SWITCH
This switch (6) is used to switch the air source between recircu-
lation of the air inside the cab and intake of air from the outside.
! When switch (6) is pressed, the lamp at the top of the selec-
tor switch lights up to show that air is being blown out.
! During automatic operation, the selection of inside air
(RECIRC) and outside air (FRESH) is carried out automati-
cally.
RECIRC The outside air is shut off and only the air inside the cab is circulated.
Use this position to carry out rapid cooling of the cab or when the out-
side air is dirty.
FRESH Outside air is taken into the cab.
Use this position to take in fresh air or when carrying out demisting.
HANDLING AUTOMATIC AIR-CONDITIONER
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