Kuppersbusch KE 320-4-2T Manual de usuario

KÜPPERSBUSCH

AFTER- SALES SERVICE

Technical Manual

Fridge-freezer combination

KE 320-4-2T

Contents

1. General ................................................................................................................................... 2

1.1 Refrigeration circuit..................................................................................................... 3

1.2 Structure of electronics............................................................................................... 4

1.3 Characteristics............................................................................................................ 4

1.4 Electrical circuit diagram............................................................................................. 4

2. Function requests.................................................................................................................... 5

2.1 Operating functions..................................................................................................... 5

2.2 Control functions......................................................................................................... 7

2.3 Safety functions .......................................................................................................... 8

3. Shop circuit state..................................................................................................................... 9

4. Special pogrammes ................................................................................................................ 9

4.1 Starting programme.................................................................................................... 9

4.2 Test programmes...................................................................................................... 10

5. Switching values and NTC detector values........................................................................... 11

6. Solenoid valve....................................................................................................................... 12

7. Stainless steel doors............................................................................................................. 13

Circuit diagrams

VKS-H Technical Manual

KE 320-4-2T H8-420-02-01

Responsible: K.H. Hiby Phone: (0209) 401-732 Fax: (0209) 401-743 Date: 28.01.1998

1For internal use only

1. General

- Electronic fridge-freezer

- Extra high insulation, energy efficiency class A

- Standard energy consumption 314 kWh in 365 days (DIN EN 153)

room temperature 25 °C / not opened for 24 hours

- Climatic group SN +10 to +32 degrees Celsius

- gross capacity 280 litres; 190 litres refrigerator section; 90 litres freezer compartment

- Start from about July 1997

- Full stainless steel design brushed in longitudinal direction

- Plastic parts chrome finished, operation panel with Küppersbusch logo

- Control and operating electronics located behind operation panel and equipped with plastic

protection device for high ESD safety

- All NTC temperature detectors can be replaced.

- Packaged transformer substation for all components in the area of the bottom trough

- Refrigeration circuit with 2 evaporators, 1 solenoid valve and 1 condenser

- Refrigerator compartment (RC) can be switched off independent of the freezer compartment

(FC).

VKS-H Technical Manual

KE 320-4-2T H8-420-02-01

Responsible: K.H. Hiby Phone: (0209) 401-732 Fax: (0209) 401-743 Date: 28.01.1998

For internal use only 2

1.1 Refrigeration circuit

VKS-H Technical Manual

KE 320-4-2T H8-420-02-01

Responsible: K.H. Hiby Phone: (0209) 401-732 Fax: (0209) 401-743 Date: 28.01.1998

3For internal use only

1.2 Structure of electronics

Software:

The MC68HC05B6 (6 kbyte ROM, 255 byte EEPROM) of Motorola is used as

C. In order to

maintain the flexibility of the electronics changeable parameters (e.g. type of electronics, switching

temperatures, etc.) are stored in the EEPROM of the

1.3 Characteristics

Control type:

C control

Condenser: single-phase asynchronous motor

Solenoid valve: bistable

Refrigerator compartment light: halogen transformer with light

1.4 Electrical circuit diagram

VKS-H Technical Manual

KE 320-4-2T H8-420-02-01

Responsible: K.H. Hiby Phone: (0209) 401-732 Fax: (0209) 401-743 Date: 28.01.1998

For internal use only 4

2. Function requests

2.1 Operating functions

2.1.1 Super button and operation of the freezing programme

After pressing the Super button, the freezing programme will be initiated.

This means that:

- the Super LED lights.

- the ECO LED goes off.

- the condenser switches to continuous operation.

- the refrigerator compartment priority circuit is continually valid.

- the "Alarm On temperature" is changed to 4 degrees (standard setting: -13 degrees).

The appliance is reset to standard control operation, if:

- the Super button is pressed again.

- no goods have been put into the freezer within the "max. pre-running time" of 26 hours.

-the "freezer reset temperature" of -25 °C or

the "freezing time" of 28 hours has been reached after putting goods into the freezer.

Definition of putting in of goods:

Goods have been put in, if the FC room detector has warmed up by at least the "FC temperature increase"

of 4 K and the "maximum FC temperature" of -24 degrees has been exceeded.

Example 1 Example 2

VKS-H Technical Manual

KE 320-4-2T H8-420-02-01

Responsible: K.H. Hiby Phone: (0209) 401-732 Fax: (0209) 401-743 Date: 28.01.1998

5For internal use only

2.1.2 Alarm Off button and Alarm function

If the temperature of the FC room detector is higher or equal -9 °C the alarm LED and

the accoustic signal transmitter will be activated.

The accoustic signal transmitter can be switched oof by pressing the alarm off button; the

alarm LED is still on. Accoustic signal and alarm LED are extinguished, if the temperature is

colder than -14 °C again.

2.1.3 Memory button and Memory function

If the preset rated temperature is reached again after an alarm signal, the temperature

indicator continues to flash until the Memory button is pressed. By pressing the Memory

button, the highest freezer temperature is displayed for 5 sec. before the indicator is reset to

the actual temperature.

2.1.4 FC temperature selector and FC temperature indicator

The FC temperature indicator shows the rated temperature. If the FC temperature selector

button is pressed, the actual rated value is indicated for 5 sec. The possible temperature

setting range is between -18 °C and -26 °C. Setting is performed in increments of 1 degree.

Each depression of the button reduces the temperature by 1 K. If the button is continually

pressed, the rated temperature is continually changed in a 1 second-cycle.

The display may only be changed in increments of 1 K in order to prevent it from flickering.

The entire display range is between +39 °C and -39 °C. The FC display shows a corrected

measured FC room detector temperature.

2.1.5 RC temperature selector and RC temperature indicator

The RC temperature indicator shows the actual temperature. If the refrigerator temperature

selector button is pressed, the actual rated value is displayed for 5 sec. The possible

temperature setting range is between 2 °C and 11 °C. Setting is performed in increments of

1 degree. Each depression of the button reduces the temperature by 1 K.

The display may only be changed in steps of 1 K in order to prevent it from flickering. The

matching speed amounts to max. 1 K per 10 min. up to 16 °C. In case of higher temperatures,

the matching speed amounts to 1 K per 4 min. The entire display range is between 0 °C and

39 °C. The RC display shows a corrected measured RC room detector temperature.

VKS-H Technical Manual

KE 320-4-2T H8-420-02-01

Responsible: K.H. Hiby Phone: (0209) 401-732 Fax: (0209) 401-743 Date: 28.01.1998

For internal use only 6

2.1.6 RC On/Off button

By means of the RC On/Off button, the refrigerator compartment and the associated control

and display functions are switched on/off. The refrigerator compartment interior light is

switched off.

2.2 Control functions

2.2.1 Standard control

During standard control operation the following components are activated:

RC control (refrigeration request): - condensor "on"

- valve to position "1" (neg. half-waves)

FC control (refrigeration request): - condenser "on"

- valve to position "0" (pos. half-waves)

In case of simultaneous control of refrigerator compartment and freezer compartment,

the refrigerator compartment has priority.

After the condenser has been switched off, a reclosing lockout of 10 min. has to be provided.

2.2.2 Defrosting function

The refrigerator compartment is defrosted after a RC appliance running time of 8 hours. The

refrigerator compartment is not operated for the RC minimum defrosting time of 15 min. Then

the appliance waits for the RC room detector to reach the RC defrosting reset temperature of

+8 °C and the RC switching on value or until the RC defrosting safety time of 140 min. has

been reached. Afterwards the refrigerator compartment will switch over to standard control

operation again.

If the temperature of the RC room detector is lower than +8 °C during the commissioning, a

defrosting of the refrigerator compartment is initiated after the first refrigerator compartment

defrosting time of 3 hours.

During the defrosting phase of the refrigerator compartment, the refrigerator compartment

cooling is switched off. Control of the freezer compartment is continued in standard mode.

VKS-H Technical Manual

KE 320-4-2T H8-420-02-01

Responsible: K.H. Hiby Phone: (0209) 401-732 Fax: (0209) 401-743 Date: 28.01.1998

7For internal use only

2.3 Safety functions

2.3.1 Power failure protection

In case of a power failure, the following data are stored in the EEPROM:

- RC status: On/Off

- RC rated temperature

- FC status: standard control operation, super freeze operation

- FC rated temperature

- Memory temperature

2.3.2 Detector breakage/short-circuit

In case of a breakage or short-circuit of the detector, the following functions are triggered.

The function of the other detector is maintained.

Detector Temperature Status of the appliance

- RCRD >45 °C, < -7 °C - RC display flashes "E1"

- RC control:

10 min. - On

10 min. - Off

- FCRD > 45 °C, < -44 °C - FC display flashes "E2"

- Continuous operation of the condenser

2.3.3 Solenoid valve safety function

If the temperature of the FCRD leaves the capture range in the direction cold during the

withstand time, the valve will be switched over for a short time. Then the FCRD is checked

every 30 min. to see whether the temperature increases again. If not, the valve is activated

again. This procedure is repeated until the RCRD has returned to the capture range again.

VKS-H Technical Manual

KE 320-4-2T H8-420-02-01

Responsible: K.H. Hiby Phone: (0209) 401-732 Fax: (0209) 401-743 Date: 28.01.1998

For internal use only 8

3. Shop circuit state

The shop circuit state is obtained by pressing the "Super" button with the appliance dis-

connected from the supply and switching on the appliance. The button must be

pressed, until the yellow super LED is lit (2 sec.). The shop circuit is terminated, when the

supply voltage is disconnected (switching off of the appliance, interruption of power supply).

The shop circuit state includes the following functions:

-Refrigerator compartment indicator = 6 °C

- Freezer compartment indicator = -18 °C

- Refrigerator compartment interior light depending on the refrigerator compartment door position

- No RC/FC control (no control of load components, except refrigerator compartment interior

light)

All buttons can be operated, however, buttons "Memory" and "Alarm Off" have no function.

4. Special pogrammes

4.1 Starting programme

The starting programme is active,if

- the FCRD > -5 °C,

- the RCRD > 12 °C

during the commissioning of the appliance.

After termination of the starting programme, the appliance switches over to the standard con-

trol operation. All indicators and push-buttons operate like during the standard control opera-

tion.

Programme cycle:

- The valve is activated for 5 sec. (bistable: half-wave control)

- The halogen light is activated for 5 sec.

- The freezer compartment ventilator is activated for 5 sec.

- 8 min. operation of the refrigerator compartment (valve is immediately switched in)

- 10 min. operation of the freezer compartment

- standard control operation

VKS-H Technical Manual

KE 320-4-2T H8-420-02-01

Responsible: K.H. Hiby Phone: (0209) 401-732 Fax: (0209) 401-743 Date: 28.01.1998

9For internal use only

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