CCE M-400 Schematic

Service Manual

Model M-400

CCE da AMAZÔNIA

Cliente: Wal Mart – Argentina Customer CODE: 1.01.72360.50

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Assinatura de Aprovação Approved Signature

M-400

INDEX

1. GENERAL..................................................................................................................................................................2

2. TECHNICAL SPECIFICATION........................................................................................................................4

2.1. PRODUCT:...............................................................................................................................................................4

2.2. SPECIFICATIONS:...............................................................................................................................................4

2.3. FUNCTIONS:...........................................................................................................................................................5

2.4. SAFETY REQUISITES:.......................................................................................................................................5

3. TEST INSTRUCTION ........................................................................................................................................... 6

3.1. MICROWAVES CREEPAGE.............................................................................................................................6

3.2. OUTPUT POWER MEASUREMENT OF MICROWAVES......................................................................6

3.3. INPUT POWER.......................................................................................................................................................6

3.4. OSCILLATION FREQUENCY OF THE MICROWAVES.......................................................................7

3.5. CREEPAGE CURRENT AND DIELECTRIC HARDENESS. ................................................................. 7

3.6. HEATING.................................................................................................................................................................7

3.7. OPERATION WITHOUT LOAD.....................................................................................................................8

3.8. SUPERVISION DEVICE.....................................................................................................................................8

3.9. PROTECTION AGAINST ELECTRIC CHOCK (MINIATURE STANDARD FINGER) ............. 8

3.10. CUTTING PARTS.................................................................................................................................................8

3.11. INSULATION........................................................................................................................................................8

3.12. AMIANTHUS .........................................................................................................................................................8

3.13. INTERNAL WIRING..........................................................................................................................................8

3.14. INTERNAL WIRING INSULATION. ............................................................................................................ 9

3.15. WIRE HEART IDENTIFICATION................................................................................................................9

3. MATERIAL LIST...............................................................................................................................................10

4. ELECTRICAL SCHEME.................................................................................................................................17

4.1 MAIN PCB ............................................................................................................................................................18

5. SILKTOP AND SOLDERS ..............................................................................................................................19

5.1 MAIN PCB ............................................................................................................................................................19

6. EXPLODED VIEW ............................................................................................................................................21

M-400

1. GENERAL

1.1 Panel Description

1 Energy Saving 7 Cancel 2 Clock 8 Defrost 3 +1 minute 9 Power 4 Start 10 Rice 5 Adjustment Switch 11 Pop Corn 6 Power On/Off

M-400

1.2 Acessories and Parts

1 Oven Cavity 6 Turntable 2 Digital Display 7

Door′s Security System

Door′s lockers

8 Oven Door 4 Control Panel 9 Transparent Screen of the Door 5 Sliding Guide of the Turntable

M-400

2. TECHNICAL SPECIFICATION

Procedure to check up microwaves parameters

2.1. Product:

Device: Microwaves Oven Model: M-400. Capacity: 30 liters Cavity Frontal Panel - Material: Steel SAE 1010 ZCL Miniatured Crystals

Lateral Panel ( NBR 7008 ). Back Panel - Weld by projections ( capacitive and resisti ve )

Chassis - Finishing: Painting the to the hot one – Epox. Cabinet - Color: ABS white euro. Dimensions: Product

Packing Weight: Product

Packed Product Display Led 7 segments. Clock 12h Browner

≈ 530X320X430 mm ≈ 612X376X477mm ≈ 15,80 Kg ≈ 18,10Kg

2.2. Specifications:

a) Supply:

Supply voltage: V 120 108 132 Supply Frequency: Hz 60 - -

Microwaves Frequency ( ISM ): MHz 2450 2435 2465 Consumed Power : M-400 W 1450 - Microwaves Power : M-400 W 900 - Browner Power : M-400 W 1050 Nominal Current: M-400 A 13 - -

b) PCB Voltage

Trafo: Primary Vac 120 - -

Secondary Vac 10 - 12V + / - C05 Vdc 14 - 5V + / - C15 Vdc 5 - -

UN. Nominal Min. Max.

V 220 209 231

point UN. Nominal Min. Max.

Vac 220 - -

M-400

c) High Voltage.

Magnetron voltage KV 4,25 - Filament current A 10 - Diode current mA 300 - -

d) General:

− Resonance frequency ( XTAL ): 8,00MHz;

− Alarm frequency ( Buzzer ): 2,00KHz;

− Duration time of the sonorous alarm when pressed the key: 0,05 second;

− Duration time of the sonorous alarm when finished the process: 0,5 second/3 touches;

− Indication when the electric net: Access 4 segments / two points blink, to indicate that

the pr oduct is power on at the electric net.

2.3. Functions:

01 Energy Saving Cook wiht the 80% power. 02 Clock Clock function 12:00h. 03 +1 more Heat for 1 minute or add + 1 minute for the time. 04 Power on Execute the programed option. 05 Set Set the time and set the clock. 06 Power off / Canc el Stop the work or cancel the programming. 07 Defrost Execute the defrost pre programed function. 08 Power Set the level power desired. 09 Browner Execute durador function. 10 Pop corn Execute the pop corn pre programed function. 11 POWER Master Key

2.4. Safety Requisites:

a) Specification: Accordance Product: IEC325-2-25 ( 1996 ).

b) Safety divices:

- Fuse of net: 20A/120V

- Monitored microwaves: 1st Monitored key of the door (otice the microcontroler the

- Cavity thermostat : Temperature = 95ºC;

- Magnetron thermostat: Temperature = 135ºC;

10A/220V door state).

2nd Monitored key of the electric net (em parallel with AC, in case of relay fail and of the third key in series with electric net, provoke the fuse bu rning.). 3rd Key in serires with the electric net ( interrupt the circuit supply at the moment when is opened the door. ).

M-400

3. TEST INSTRUCTION

3.1. Microwaves creepage

Specification: the microwaves creepage – a distance of 50mm of the external surface of the device could not exceed 1miliwatts for squared centimeters.

Experience: a (275 +/- 5) g load of potable water at (20 +/- 2) ºC temperature inside a recipient of thin walls of borosilicate glass with diameter upper 85mm is places at the horizontal support center, the device supplied with nominal voltage and operated with controls adjusted to maximim power. The microwaves meter is moved over the device surface with objective the locate microwaves creepage.

The maximum creepage colud not exceed 1 miliwatts per squared centimeters.

3.2. Output power measurement of microwaves.

It must be utilized borosilicate recipient with external diameter of aproximately 190mm and height of 90mm and thickness of 3mm. At the begining of the experience, the oven and the recipient must be at environment temperature. And used to the experince potable water with 10 +/- 1 ºC initial temperature. The water temperature is measured immediately before to placed in recipient. An amount of 1000 +/- 5g of water is added in recipient. The recipient is placed at plate center of the oven. The device is supplied with nominal voltage at the adjustment of maximum power. It must be placed the needed time for that the water reach 20 +/- 2ºC. After the time finishing it leave the recipient and it measured immediately.

Notas:

ü The water is mixed before your temperature be measured. ü Device of mixing and measurement must have low capability of heating. ü Specified power 900 Watts (IEC 705)

The output power of the microwaves is calculated by formulation:

P = (1/T) x [4,187 x Mw x (T2 – T1) + 0,55 x Mc x (T2 – T0)] / T

Where:

P = microwaves output in watts. Mw = water mass in grammes. Mc = recipient mass in grammes. T0 = environment temperature in ºC. T1 = water initial temperature in ºC. T2 = water final temperature in ºC. T = heating time in seconds, excluding the heating time of the magneton filament.

3.3. Input power.

The oven will have to be supplied with nominal voltage and a load of 1 liter of water. The measured input power could not present deviation more than 60W in relation to the specified value, A potência de entrada medida não poderá apresentar desvio maior que 60W em relação ao valor especificado, or either, the speficied value for consumed power will be: Consumed power = 1450 + 60W.

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