Haier DW-86L338, Руководство по обслуживанию

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hours prior to use (or powered up again before use) inspection machine. Qualified to
confirm the testing machine
The use of the cryogenic cabinet
1) Must stand for the freezer for at least 24 hours to energize.
2) empty containers not put items power on in stages so that the freezer before cooling to
‐ 40 ° C the normal open stop and then dropped to ‐ 60 degrees, normally open to stop
eight hours and then transferred to ‐ 80 degrees, observed freezer there are normally open
to stop more than 24 hours. Prove freezer performance is normal.
3) Press operation after 2 confirm the freezer normal freezers memory to place items. ‐ 60
℃
items should be stored in principle, does not exceed 1/3 of tank capacity. Items stored in
the temperature is higher than ‐ 60 ° C, freezer temperature should be set higher than the
storage temperature 3 ° C (i.e., if the articles temperature is ‐ 20 ° C, then the cryogenic
cabinet set at a temperature of ‐ 23 ° C), ensure the shutdown of the freezer, and a
normally open stop more than eight hours.
4) prohibits: are all temperature freezer cold storage equipment, storage of
low ‐ temperature materials, can not be used to the higher temperature of quick ‐ frozen
plasma products, non ‐ disposable put too many relatively too hot items, this will cause the
compressor stop time machine, the temperature does not drop, it is easy to burn the
compressor, resulting in damage to the machine box items. Items must be in batches into
the points ladder temperature cooling, low temperature until needed!
5) If the user needs a way to in a short time the frozen equipment forming plasma
products, now we specifically developed a frozen machine to meet user demand for frozen
plasma.
3. Pressure switch and infusion of freezing medium
Pressure switch
Principle: when pipeline pressure at pressure switch exceeds 2.1MPa, contact disconnects,
low temperature cabinet stops operation, pressure begins decreasing; when pressure