Scratch calibrate fry vats (gas fryers only) (continued)
6Adjust combustion air blower, if necessary.
If the fryer’s recovery time is less than 145 seconds, skip this step.
If either the multimeter reading or the burner color is not acceptable, adjust the combustion air blower intake plate.
Loosen the locking nuts on the intake plate with a small adjustable wrench. Open or close the plate to adjust the airflow while watching the multimeter read- ing and the color of the burner. A blue flame usually means the burner isn’t receiving enough air. Dark spots on the burner usually mean the burner is receiving too much air.
When the microamp reading is in the acceptable range and the burner color is bright
7Scratch calibrate remaining fryers.
Repeat steps 1 through 5 for each remaining vat and fryer.
©McDonald’s Corporation · Planned Maintenance Manual · Revised June 2008 | Page 2 of 2 |
