Yuchai YC60-9, Руководство оператора

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Air-condition
This excavator is with AC, and the operation switches are placed on the panel
of left control box.
About the maintenance of the air-condition, please see the user manual and
the air-condition user manual.
1. Caution items of the air-condition maintenance
1) The refrigeration system is failure if “ ” is flashing, the compressor
don’t work and no refrigeration, please find the specialized persons to
repair.
2) If the Ac system auto-stop (the screen light up then off), or “ ” is
flashing (about 5 seconds), an abnormal power off is occurring or
occurred in last time (shut down without turn off the AC switch, fuse is
burned during AC system is working, AC wire is poor connection). The
AC system can be used if “ ” stop flashing after 5 seconds. Please
check the connection if AC system can not to be started or auto-stop
after turn on.
3) For protecting the compressor, this machine sets 15 seconds of interval
time between two operations of the compressor. so the compressor will
not run even you push the cooling button if the interval time is shorter
than 15 seconds, but your instruction will be accepted after 15 seconds.
4) The dust screen of the AC box must be cleaned often, clean it in every
month. Otherwise, the dust will block the dust screen and the air not
thought the heat exchanger smoothly, then effect the Air Conditioning.
5) Under special conditions (humidity, hot weather, outer loop, blower
running in low speed, dust screen is dirty, return tuyere is blocked etc.),
some time you will find the air outlet is getting smaller after used the
rapid cooling function for a long time, even almost no wind, this is
because the evaporator is frosting. But this is not a malfunction, just
stop rapid cooling, clean the dirt, and choose high wind function, then
choose the cooling function after few minutes, it will run normally. Don’t
choose low wind, rapid cooling and outer loop function at the same time
at this time, you can choose normal cooling or mid cooling.
6) If you need to use heating system in winter, please wait until the water
temperature is increased.
7) The core of the heating is connected to the water tank of the engine, the
water tank will be short of water and cause the engine overheat if the
core leaks. So it is very important to protect the heating core from frost
crack, same as the water tank. To avoid the coolant freezed to make
frost crack to the heating core or the water tank, please use the coolant
as the request of the manufacture. Drain the coolant if you need to park