Midea MAD020T1N1S1 Technical Manual page 61

Midea Precision AC Technical Manual
 Safe operation of refrigerant system detection: Operate the compressor, and after the
unit is stable operated then check whether there are bubbles in the liquid sight glass. Adjust
the thermal expansion valve to the suction degree of overheating be about 5°C~8°C, and
each adjustment should not over 1/2 circle and at least observe over 15 minutes every time.
Observe the compressor gas suction pipeline, make sure the pipeline and the compressor
cover have no condensed water and eliminate the potential liquid slugging danger. Under
the status of 24°C 50%RH air return and 29~30bar condensing pressure, the compressor
gas suction pressure should over 9bar. After detection, adjust the temperature and humidity
back to the default setting value or the initialization setting value.
Steps after trial run

Reset the unit to default status.

Check and make sure the temperature and humidity setting value and control precision are

reasonable.
 Check and make sure other functions are reasonable.
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MCAC-PDSM-2013-01