Wipe the filter pan and all detachable parts and accessories with a clean dry cloth. Use a cloth dampened with a solution of McDonald’s All Purpose Concentrate to remove accumulated carbonized oil. Rinse and thoroughly dry each part. DO NOT use steel wool or abrasive pads to clean these parts. The scratches that result from such scrubbing make subsequent cleanings more difficult.
6.4BI-WEEKLY CHECKS AND SERVICE
6.4.1 Check M3000 Computer Set Point Accuracy
1.Insert a
2.When the computer display shows a series of dashes
contents are within the cooking range), press the 
switch once to display the temperature of the oil as sensed by the temperature probe.
3.Press the 
switch twice to display the set point.
4.Note the temperature on the thermometer or pyrometer. Actual temperature and pyrometer readings should be within ± 5ºF (3ºC) of each other. If not, contact a Factory Authorized Service Agency for assistance.
6.5QUARTERLY CHECKS AND SERVICE
6.5.1 Clean Combustion Air Blower Assembly
1. Disconnect the blower wiring harness and remove the four blower mounting nuts. (See Figure 1 on below)
Wiring connection 
Figure 1
2.Remove the three fasteners that secure the blower motor assembly to the blower housing, and separate the two components. (See Figure 2)
Remove these fasteners.
Figure 2