SUNWARD SWE50B, Operation & Maintenance Manual

Page: 62 / 197

55
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
(3) 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.
(4) When using heating system in winter, use it after the water temperature of engine increases.
(5) 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.
(6) The refrigerant will frostbite your skin and eyes especially. Furthermore, it will release poisonous light and
gas when meets 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 flame aside.
(7) 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.
(8) Items for regular check
No. Items to check Detail to check
Frequency
monthly seasonally
1 all the fasteners loose and drop or not
√
2 belt tautness and abrasion
√
3 pipelines gall or break
√
4 joints gall or leak
√
5 condenser jammed by dust or not
√
6 cluster wear out, burn or not
√
7
Electromagnetic clutch (compressor)
skid or not
√
8 compressor anomalous sound
√
9
quantity
of refrigerant
bubble in
the fluid-inspection lens
√
10 dust screen dirty or jammed
√