D C I N V E R T E R C O M P R E S S O R C R I T E R I A
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15 Compressor vacuum operation
Compressor should never be operated while under vacuum. Otherwise, internal arcing
can cause damaging parts.
16 The compressor should be operated for more than 20 seconds within 15 minutes after charging
refrigerant into the system so proper lubrication results.
17 Liquid refrigerant return limitations
(1) Liquid refrigerant level in s-tank should be lower
than the top of s-pipe in s-tank.(see chart at right)
(2) There should not exist noise of the liquid refrigerant compression, current and vibrancy
increase. System can append the assistant stank or reduce the amount of refrigerant
to prevent from liquid refrigerant compression. Refrigerant system forbid liquid
refrigerant from flowing back compressor in any case. In normal condition the overheat
gas refrigerant should flow back compressor.
18 Purge parts with dry nitrogen or dry air to remove remains in parts (dust,
detergent, etc.) before assembly of system. Time fur purging: over one second
for pipe;
over three seconds for heat exchanger. Purging pressure: 0.9±0.1MpaG.
Dew point of dry air:
Below
-20°C
Dry nitrogen should be charged in compressor before assembly of system. Welding should be finished
within one minute after charge of nitrogen. Dry nitrogen needs to be charged again and weld if over
one minute. Always purge the compressor with dry nitrogen during assembly of system.
The motor winding temperature should be less than 149℃
and hermetic terminal body
temperature should be less than 177℃ in process of
manufacturing.
Summary of Contents for HIGHLY WHP08750VCDNC9AU
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