Hefei Meiling MCBR1010 SERIES, Руководство по обслуживанию

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三 Control system
1. Electricity principle diagram
2.Defrost work principle
It is time to begin from last defrost period,defrost timer port 3
and 4 are connected, the compressor begins to operate,
between the compressor is operated ,the same time the motor
of the defrost timer is operated,when it 16 hours that is the time
of the compressor s operated ,under the drive of defrost timer
motor defrost timer port 3 and 2 are connected ,the
compressor is stopped and auto-defrost is processed.
After getting in to auto-defrost, because the temperature of
the evaporator surface is low, over-temerature control of
heater is connected and defrost timer motor is stopped, defrost
heater is operated.When the temperature of cool evaporator is
rised to about 8 ℃ , over-temerature control of heater isn’t