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99
6
5
4
3
2
1
Compressor idle
Compressor Speed
Thermostat opens
Compressor stops
Thermostat opens
Compressor stops
Thermostat opens
Compressor stops
Thermostat opens
Compressor stops
Thermostat closes
Compressor starts
Thermostat closes
Compressor starts
Thermostat closes
Compressor starts
Warm food,
drinks, etc.
placed in box
Time
Power applied to system.
Merlin
initiates cold start
ramp up sequence
Example of smart speed control routine by
Merlin
SSC.
Cold start ramp up sequence is always
initiated when power first applied to the
system. Subsequent speed selections are
made automatically based on thermostat
timing dependent on ambient conditions,
l d
3,500 RPM
2,000 RPM
Box Temperature
42F
40F
Compressor running
Compressor idle
Thermostat closes
Compressor starts
Graphics show typical performance of refrigerator box with thermostat set at 40F with 2 deg F differential.
Three 5 minute
steps of cold
start ramp up
sequence
