GE LMAB1240ST Manuel d'utilisateur télécharger pdf (Page 14)

5-3

A. OUTER CASE REMOVAL

1) Disconnect the power supply cord from the outlet.

2) Remove the screws from the rear of the case.

The outer case must be moved backward to be lifted

off.

B. POWER SUPPLY CORD

1) Remove the outer case.

2) Disconnect two terminals and remove one screw of the

ground terminal.

C. CONTROL PANEL ASSEMBLY

1) Open the door.

2) Disconnect the lead wire from RELAY (RY2) of the

PCB SUB ASSEMBLY.

3) Disconnect the leadwire from connector (CN1) of the

PCB SUB ASSEMBLY.

4) Remove screw which hold the controller assembly to

the cavity.

5) Lift up and pull out control panel assembly carefully

from the cavity.

CAUTION: DISCHARGE THE HIGH VOLTAGE

CAPACITOR BEFORE SERVICING

(refer to page 2-1)

• Microwave power output measurement is made with

the microwave oven supplied at its rated voltage and

operated at its maximum microwave power setting with

a load of (1000 ± 5)g of potable water.

• The water is contained in a cylindrical borosilicate glass

vessel having a maximum material thickness of 3 mm

and an outside diameter of approximately 190mm.

• The oven and the empty vessel are at ambient

temperature prior to the start of the test.

• The initial temperature (T1) of the water is (10±2)°C. It

is measured immediately before the water is added to

the vessel. After addition of the water to the vessel,

the load is immediately placed on the center of the

turntable which is in the lowest position and the

microwave power switched on.

• The time T for the temperature of the water to rise by a

value ∆T of (10±2)° is measured, where T is the time in

seconds and ∆T is the temperature rise. The initial and

final water temperatures are selected so that the

maximum difference between the final water

temperature and the ambient temperature is 5°.

• The microwave power output P in watts is calculated

from the following formula:

4187 x (∆T)

is measured while the microwave generator is

operating at full power. Magnetron filament heat-up

time is not included. (about 3 sec)

• The water is stirred, to equalize temperature throughout

the vessel, prior to measuring the final water

temperature.

• Stirring devices and measuring instruments are

selected in order to minimize addition or removal of

heat.

MEASUREMENT OF MICROWAVE POWER OUTPUT

DISASSEMBLY AND ADJUSTMENT

P =

WATER LOAD

TURNTABLE

ground

screw

securing

screw

Remove the screw

Lift up and pull out control panel

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GE LMAB1240ST Manuel d'utilisateur Page 14

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