SWE90UF-2PB Operation & Maintenance Manual
moderately low temperature.
5
. Dehumidification and defrosting operation
When it is damp (including the indoor vapor and sweat made by human) and indoor temperature is higher
than outdoor (including using heater), except the discomfort of dampness to human, a layer of frost will
form on the inner side of the glass which will affect the view. Now you should choose this operation.
Note:
(1) Under special conditions, (e.g. damp or not too hot environment, low-speed rotation of air blower, dust
screen clogging, circulating port clogging by foreign materials), using strong refrigeration for a long time,
you will feel the wind is becoming smaller or even no wind, this is the representation of air conditioner
vaporization and frosting. The frost on the vaporizer surface blocks the passage of air flow which makes
refrigeration worse. But this is not malfunction, now you should stop refrigeration for a moment, remove
the blocking materials, choose big wind and restart refrigeration after several minutes then it will become
normal. After it’s normal, do not choose small wind and strong refrigeration at the same time, e.g. you can
choose medium refrigeration and weak refrigeration
(2) Please close the hot water valve before using the refrigeration system in summer or the aeration system
in spring or autumn. In winter, please open the hot water valve before using the heating system.
(3) When using heating system in winter, use it after the water temperature of engine increases.
(4) For the radiator interlinks to the water tank of the engine, so, once it leaks, the water tank will lack water
and the engine will overheat. In winter, protecting the radiator from being frozen crack is as important as
the water tank. To prevent the cooling fluid from freezing and causing the radiator or the water tank cracks,
please use the prescribed cooling fluid by the main engine plant. You’d better effuse the cooling fluid if
the engine stops for a long time in winter, or it will freeze.
(5) The refrigerant will frostbite your skin and eyes especially. Furthermore, it will release poisonous light
and gas when meeting the naked flame. So, any time before the refrigeration system is disassembled, the
refrigerant must be reclaimed or released at first, in order to avoid it sprays over skin or into eyes. During
disassembling, please ensure no open fire aside.
(6) Please run the refrigeration system for 5 to 10 minutes every half a month if it is not be used over a long
period of time.
(7) Items for regular check
Check tension ( see
remark
① )
and
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