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© 2000 McDonald’s Corporation 819-5432 NOV 05
All Rights Reserved Card 15
Recovery Check Time (With M2000 Computer only.)
4. Record the recovery time.
Note: Recovery time should be less than 145 seconds for a gas fryer, and less than 100
seconds for an electric fryer. If time is less than 145 seconds for gas, or 100 for electric
fryers, recovery time is acceptable. If the time displayed is greater than the required
time, refer to the scratch calibration procedure on this card or the Fryer section of the
Equipment Manual for Troubleshooting Charts and check the following:
g. Grease filter condition
h. Cooking oil level
i. (Gas fryers) Proper placement of seal angle, gravity blade and standoff
j. (Gas fryers) Air flow, combustion air blower
k. (Gas fryers) Radiant burner condition
l. (Electric fryers) Large power plug plugged in properly.
6. Repeat steps 1 through 3 for each additional vat.
7. Recovery time check is complete.
High-Limit Check (With MACC100 Computer only.)
Note: Conduct this test when fryer will not be needed for about 1 hour, and when the
cooking oil is due to be changed. Discard the cooking oil after completing this check.
Note: Grease filters must be in place and exhaust fans must be on during entire high-
limit control check procedure.
1. Press
to turn the vat computer “ON” and let cooking oil stabilize at a normal cooking
temperature, then wait for the
light to go OFF.
2. The cooking oil level should cover the temperature and high-limit probes. Add cooking oil if
necessary.
Caution: If, after completing both high-limit tests you find only the second high-limit
operates properly, the vat can be used if it is absolutely necessary, but with extreme care.
The computer must be replaced immediately after this period of necessity. If the second
high-limit does not work the vat must NOT be used until the second high-limit has been
replaced. If the first high-limit feature activates at less than 400°F (204°C), do not
replace the computer unless it interferes with proper cooking. If the second high-limit
activates at less than 425°F (218°C), do not replace it unless it prevents you from
checking the first high-limit feature.
Note: The high-limit test program allows the operator to test the trip-out temperature of
the first and second high-limits. The first high-limit feature is a function performed by
the computer and automatically resets when the cooking oil cools below its trip point of
400°F (204°C). The second high-limit automatically resets when the cooking oil has
cooled to 400°F (204°C) or less. To perform the high-limit test, the vat must be
operating normally and the display reading "HI-LIMIT" on either display for a full- or
split-vat, depending on the test being performed. Only one side of a split-vat is to be
checked at a time. The test can be performed any time the vat is turned ON except if
the vat is in the melt or cooking cycle.
3. To start the "first high-limit test", press the
button and the button
simultaneously, then release the
button, but continue to depress the button.
Result: The vat will heat while the
button is depressed continuously. The display
will show the actual temperature during the test. At 410°F (210°C) ±10°F (±5°C), the
first high-limit feature will trip. The display will show (alternating) HI-1 and the actual
temperature, i.e. "HI-1-400°F (204°C)" until the vat cools to 400°F (204°C), or less.
The vat will automatically reactivate below 400°F (204°C).
Continued from previous
page.
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