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• Control of starting
FC fan motor is rotated of high speed, for 10 seconds after starting.
• Synchronous control of compressor
FC fan is operated, while compressor is operated.
FC fan is operated, while FC Cooling Mode.
• Control of Door Open/Close
FC fan is stopped while FC door is opened.
• FC fan delay control, when FC defrost is stopped
When Defrost ends, three minutes pass after compressor works, the FC fan does the forcibly stop for six minutes.
• Control of FC Fan rotational speed
High speed drive: DC 12V
Common drive: DC 10V
Stop: 0V
In case normal control
5.7.
Compressor Rotational Speed Control
For securing the amount of cooling according to the overload at a high ambient temperature, the rotational
speed of the compressor is changed by difference of temperature between FCC and FC Control setting, PCC
and PC Control setting.
Detection : FCC, PCC, ATC sensor
5.7.1.
Normal time
• The judgment of compressor ON: FCC is ON temperature or above
• The judgment of compressor OFF: While FC is cooling
5.7.2.
The use rotational speed
• The rotational speed of compressor is changed by deference between FCC temperature standard value (ON tempera-
ture) and FCC temperature, PCC temperature standard value and PCC temperature.
The rotational speed according to ambient temperature is as follows, it doesn't drive in other rotational speeds.
• The use rotational speed
Rotational speed
Setting value r/s
• The use rotational speed according to ambient temperature is as follows
• In case Super Freeze
Ambient temperature is 21°C or below
Ambient temperature is 22°C or above, 33°C or below
Ambient temperature is 34°C or above
ATC correction temperature is
21°C or below
ATC correction temperature is
22°C or above, 28°C or below
ATC correction temperature is
29°C or above, 33°C or below
or
PC and FC Cooling Mode
While power is turning on of FC Defrost Heater,
While waiting of compressor start.
Setting rotational speed of compressor
R1
R2
25
39
Ambient temperature
A
21°C or below
B
22°C to 28°C
C
29°C to 33°C
D
34°C or above
PC Cooling Mode
FC Cooling Mode
PC Cooling Mode
FC Cooling Mode
PC Cooling Mode
FC Cooling Mode
FCC is OFF temperature OFF or above
R3
43
Rotational speed of compressor
25/39/43 r/s
25/39/43/59 r/s
43/59/71 r/s
59/71 r/s
43 / 59 r/s
59 / 71 r/s
59 / 71 r/s
19
Common
Common
Low speed
High speed
Low speed
High speed
R4
R5
59
71
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