Electrolux Side by Side Refrigerators, Руководство по обслуживанию

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2 3
A m p s D u r a t i o n o f L o a d R e a s o n f o r L o a d
1 5
3 S e c o n d s L o c k e d R o t o r
5 3 0 M i n u t e s D e f r o s t H e a t e r
3 Indefinite C o m p r e s s o r R u n n i n g
Vacation Mode
When the defrost interval reaches 12 hours and the door
has not been opened in the last 24 hours, the ADC now
enters the Vacation Mode. Once in Vacation Mode, the
defrost heater will be activated after 72 hours. If the
door has not been opened and the heater ON time is less
than 14 minutes, then the defrost cycle continues at 72
hour intervals. Should the door not be opened but the
heater operates longer than 14 minutes, then the de-
frost algorithm resets to 6 hours. Once the ADC is in
Vacation Mode, if the refrigerator door is opened a de-
frost will be initiated in 1 hour. The algorithm then resets
to the 6 hour defrost interval in the Normal Operation
Mode, and will subsequently adjust to the “ideal” interval
based on usage of the refrigerator.
Output Voltage:
• Output voltage to the defrost heater and compressor
is equal to the input voltage from the cold control.
The PC Board will withstand the following electrical loads
for temperatures as high as 110°F.
ADC Characteristics
The purpose of the ADC is to maximize the performance,
and minimize energy consumption of the refrigerator by
initiating a defrost at the optimum time. This time will
vary from unit to unit depending upon customer usage
and ambient conditions where the unit is installed. The
ADC has two operation modes; Normal and Vacation.
Initial Start & Power Interruptions
When power is applied to the power cord for the first
time, or following a power interruption, the first defrost
cycle will be initiated after four (4) hours.
Normal operation mode
The ADC begins with a base defrost interval of 6
hours following the first defrost cycle after initial start-
up or after a power interruption. The defrost interval
is the time between successive defrosts. All defrost
The ADC will dissipate an average of no more than 0.4
watts. The normal operating life is 22,000 defrost cycles
over a 15 year period.
system. It also supplies the signal to run the freezer
fan motor that is connected to E9. The board has a
built in 6 minute delay on starting the compressor
after the terminator has shut the heater off. This is to
allow the evaporator to drain.
• The food compartment cold control (E6) also supplies
a signal to the board to run the evaporator fan motor
when the damper is open and the food compartment
is calling for cooling.
• The defrost thermostat (E5) senses between the
defrost heater and the bimetal thermostat. The heater
is on the hot side of the line and the bimetal thermostat
on the neutral.
• Door Switch (E7) senses between the door switch
and the light bulb in the refrigerator compartment.
• The evaporator fan motor (E9) is connected to the
ADC. This allows the fan to run when the food
compartment control or the freezer control is calling
for cooling. The board also has a built in 7 minute
delay on starting the fan motor after the terminator
has shut off the heater. This allows the evaporator
to drain and the temperature to drop slightly before
starting the fan.
interval timing starts with the compressor pull-down
after a defrost or initial cabinet power. The defrost
interval is then determined and adjusted per the
adaptive defrost logic.
In the
Normal Operation Mode , the adaptive defrost
logic operates as follows:
Defrost Heater
On Time
Change In
Defrost Interval
Defrost
Interval
< = 12 Minutes +2 Hours Max 12 Hours
> 12 Minutes
< 14 Minutes
No Change
> = 14 Minutes - 2 Hours Min 6 Hours
Thus, whenever the ADC senses that a defrost cycle takes
12 minutes or less, the next defrost interval will be two
hours longer than the previous one. If the ADC senses
that the defrost time is between the 12 and 14 minute
“ideal” range, the defrost time will remain the same.
Should the ADC sense that the defrost cycle has exceeded
the 14 minute maximum “ideal” time limit, it will initiate
a defrost two hours sooner than the previous defrost
cycle. The ADC allows a maximum time limit of 24 min-
utes for any defrost cycle, though the defrost termina-
tion thermostat may terminate the defrost cycle when it
reaches the cutout temperature prior to the maximum
time limit. Following each defrost heater termination,
there will be a 6 minute delay (drip time) before the
compressor starts, followed by an additional one minute
evaporator fan delay.
V a c a t i o n M o d e
D O O R
O P E N E D ?
D E F R O S T
H E A T E R
O N T I M E
D E F R O S T I N T E R V A L
C H A N G E I N T E R V A L
N O < 1 4 M i n u t e s N o n e 7 2 H o u r s
Y E S
D e f r o s t i n 1 H o u r ,
r e s e t t o N o r m a l
O p e r a t i o n M o d e
6 H o u r s
N O > 1 4 M i n u t e s
R e s e t t o N o r m a l
O p e r a t i o n M o d e
6 H o u r s