Midea MRCT-075CWN1-D(C) Technical & Service Manual page 50

Midea R410A Tropical ClimaCreator Series Rooftop Package 220V 3Ph 60Hz
motor pulley to 0 turns. Then, make 0.5 turns on the pulley. Cross check the dimension 'X',
and it stands for regulation space of motor pulley. In this case, X = 1.5mm.
Video for Variable Speed Pulley Operating Guidelines
Click for video:
Scan for video: (Only for iPhone, iPad, etc.)
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http://video.midea.com/public/2016/01/29/20160129_1528c9ec886_r1.mp4
MCAC-RTT6S-201701