Komatsu WA800-1 Operation & Maintenance Manual page 149

OPERATING THE AIR CONDITIONER
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Air selector lever
l This lever switches the source
for the cooling air or heating air.
o FRE (fresh air)
Fresh air is brought into the
cooling system from outside.
(This position is used for
normal cooling and heating,
and when increasing the pres-
sure inside the cab.)
o REC (recirculate)
The air conditioning system
uses only the air inside the cab.
(This position is mainly used
for cooling or heating the air
inside the cab quickly.)
@Temperature control lever
l This lever regulates the tempera-
ture when cooling.
o The closer the lever is to
COOL, the lower the tempera-
ture of the air becomes.
o The closer the lever is to
WARM, the higher the tem-
perature of the air becomes.
Precautions
for using air
conditioner
When cooling, change the air
occasionally.
l Smoking in the air-conditioned
cab will cause your eyes to get
sore. While smoking, open the
window to let the smoke out of
the cab.
l
While using the air conditioner,
open the window once every
hour.
Be careful not to overcool the
cab.
The cab should feel cool when
entering there from outside (5°C or
6°C lower than the outside
temperature). It is not good for the
health to have the temperature in
the cab too low. Always give careful
consideration to temperature
regulation.
Handling the air conditioner in
season
To use the air conditioner com-
fortably during its season, ask your
Komatsu distributor to check the air
conditioner and add the refrigerant
if necessary.
Handling the air conditioner in
off-seasons
To lubricate each part of the
compressor during the off-seasons,
operate the air conditioner for a few
minutes two or three times a month.
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