SR-TMJ181BTW - Panasonic Home Appliance Service Manual (repair manual). Page 9

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SR-TMJ181
4. TESTING PROCEDURE
4.1 Bubbling test
Input the pan in the main body, lightly rotate the pan clockwise and counter clockwise to settle the pan on the
heating plate properly.
1. Fill water until center area of the pan bottom is dipped and close the lid. Then turn on the boiling switch.
4.2 Evaporation test
1. Check that bubbling is proper, open the lid and place a weight.
2. Fully cover 2 to 3 sheet of tissue paper (gauze is also applicable) on the pan bottom and continuously
    flow electric current.
Note : To prevent plastic parts from deformation caused by steam, be sure to open the lid fully.
Note : To prevent tissue paper from floating because of bubbling, previously hole the paper.
3. Water on the pan bottom is completely evaporated to be empty. This timing is an follows :
Within 1 minute before the boiling switch is turned off.
Within 1 minute after the boiling switch is turned off.
Place a weight so that its gravity center may be aligned at the center
2. When it beings boiling to produce steam. Remove the lid immediately check the bubbling condition on
   the pan bottom.
3. As show in the figture.
If it is improper, it may result from the insufficient contact between the pan bottom and heating plate. 
Check the pan bottom and the heating plate for foreign material remainder. Clean off the foreign materials
or replace the parts.
Bubbles generate through out the circumference of the pan bottom...............................................Proper
Bubbles does not generate on more than one quater part of the pan bottom circumference..........Improper
Bubbling
5 cm
40 cm
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