TEST PROCEDURES
PROCEDURE |
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LETTER |
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| COMPONENT TEST |
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| Room temperature |
| T0 = 21°C | |||||||||||||||||||||||||||||||||
| Initial temperature |
| T1 = 11°C | |||||||||||||||||||||||||||||||||
| Temperature after (28 + 3) = 31 sec [for |
| T2 = 21°C | |||||||||||||||||||||||||||||||||
| Temperature after (22 + 3) = 25 sec [for |
| T2 = 21°C | |||||||||||||||||||||||||||||||||
| Temperature difference |
| ∆T1 = 10˚C | |||||||||||||||||||||||||||||||||
| Measured output power |
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| The equation is “P = 150 x ∆T” [for | P = 150 x 10°C = 1500 Watts | ||||||||||||||||||||||||||||||||||
| The equation is “P = 190 x ∆T” [for | P = 190 x 10°C = 1900 Watts | ||||||||||||||||||||||||||||||||||
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| JUDGMENT: The measured output power should be within the range of ± 15 % of the rated output | |||||||||||||||||||||||||||||||||||
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| power. |
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| CAUTION: 1°C CORRESPONDS TO 150 WATTS | |||||||||||||||||||||||||||||||||||
| MEASUREMENT IF THE POWER IS INSUFFICIENT. |
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| 1000g |
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| 1000g |
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| 1000g | |||||||||||||||||||||
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| T1˚C |
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| T2˚C | ||||||||||||||||||||||||||
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Heat up for 31 sec. for
Heat up for 25 sec. for
MICROWAVE OUTPUT POWER (2000 cc alternative method)
The power output of this oven is rated using the method specified by IEC 60705. Full details of how to curry out this procedure can be found in the Sharp Technical Training notes which is available from Sharp Parts Centre (part number
The
NOTE: The following test method gives an indication of the output power only, it cannot be used to establish the actual/rated output power. If the true output power is required, then the IEC60705 test method must be used.
Alternative simplified method:
1.Place 2 litres of cold water (between 12°C and 20°C) in a suitable container.
2.Stir the water and measure the temperature in °C. Note temperature as T1.
3.Place the container in the microwave and heat the water for 56 sec.
4.When the 56 sec.
5.Calculate the output power using the following formula: R.F. Power Output = (T2 - T1) x 150 for
R.F. Power Output = (T2 - T1) x 190 for
NOTE: The result from this test should be within the allowance of 2000cc alternative method. (±10%).
MICROWAVE LEAKAGE TEST
This oven should be tested for microwave leakage on completion of any repair or adjustment, following the procedure described in the Sharp Technical Training notes (part number
It is essential that only leakage detectors with current calibration traceable to National Physical Laboratories are used.
Suitable leakage detectors: CELTEC A100
APOLLO X1
10