33
Power Test
Power Test
The power test is used to determine the actual wattage output of the instrument. View the “Power Test” video for
detailed instructions in addition to the instructions outlined below.
Power Test
1.
Select the System Settings icon in the bottom right corner of the screen.
2.
Select Tools.
3.
Select Power.
4.
Select “Mag (Magnetron).”
5.
Select “both” to determine the power output for both magnetrons: primary and secondary.
6.
Select “Power (%)” and select “100.”
7.
Scroll to the bottom of the screen to view remaining instructions for setup.
8.
Determine T
i
, Initial Temperature.
8.1.
Place 1 liter of ambient temperature (18 – 22 ºC) tap water in a 1 liter Teflon® or polypropylene beaker.
8.2.
Stir the water for at least 15 seconds.
8.3.
Using a thermometer with 0.1 °C gradations, measure and record the initial water temperature, T
i
.
Ensure that the thermometer is immersed to its indicated immersion line prior to reading the tempera-
ture.
9.
If applicable, remove the turntable from the cavity.
10.
Remove the thermometer from the beaker. Carefully place the beaker to the right of the turntable lug (not on
the lug).
11.
Gently close the door to avoid spilling any of the water.
12.
Select “Start.”
13.
Determine T
f
, Final Temperature.
13.1.
At the end of the programmed time (2 minutes), open the microwave door and place the thermometer
in the beaker.
13.2.
Stir the water thoroughly for 15 seconds, then measure and record the peak temperature reading. This
is the final temperature, T
f
.
14.
To determine the microwave output, subtract initial temperature from the final temperature. Multiply this value
by 47. This is the microwave power in watts. If the measured power is below 1600 W, repeat the microwave
power measurement.
15.
If the power remains less than 1600 W, the instrument is not producing adequate microwave power. Repeat
steps 5 through 13 to test the microwave power for the primary and secondary magnetrons. Select “Primary”
and then secondary to determine the power output for both magnetrons.
• The power output from the primary magnetron should be 1000 W. If the measured power is below 890 W,
the primary magnetron is not producing adequate microwave power.
• The power output from the secondary magnetron should be 800 W. If the measured power is below 712 W,
the secondary magnetron is not producing adequate microwave power.
• If one or both of the magnetrons is not producing sufficient wattage, contact CEM Corporation.
NOTE
In order to perform an IEC power test, specialized equipment is required. CEM Corporation has provided
this power test as a means of comparison between MARS 6 instruments. The above power test
incorporates a factor to convert the results of this test into an IEC wattage. Actual IEC power tests using
specialized equipment are performed at CEM Corporation headquarters.
