4-10
4.3.2.2 Filter Operation (cont.)
12.
Allow the filter to pump bubbles into the
fryer for 15-20 seconds to ensure evacuation
of all oil/shortening from the filter pan and
return lines.
13.
Close the "Yellow" oil-return valve and
immediately turn the filter pump "OFF".
Ensure all oil return valves are completely
closed so as to prevent oil/shortening from
siphoning out of the fry vessels. Close all
doors. Fryers are ready for operation.
4.3.1.3 Changing Filter Paper
The top piece of filter paper should be discarded when it becomes dark or scuffed in appearance.
Follow the procedure below and refer to the illustration on page 4-2.
1.
Prior to changing the paper, use the optional flexible hose with about 1-inch of oil in the filter
pan or oil drawn from the fryer to flush all debris from the filter pan sides onto the paper.
2.
Return all oil to the fryer.
3.
Open the locking latches of the hold-down ring (see Item #3, page 4-2) and lift the ring out of
the filter tank.
4.
Roll both ends of the used (top) sheet of paper in to the center, ensuring no sediment falls
out. Discard top filter paper.
5.
Remove the second sheet of paper and set aside for later use.
6.
Remove and check the grid for cleanliness and clean if necessary.
7.
Inspect the filter pan for cleanliness and clean if necessary; also inspect the oil-pickup tube at
the rear of the pan for obstructions or solidified shortening.
8.
Replace the bottom grid, place a new sheet of filter paper on the grid, and place the old
bottom sheet on top of the new piece. Use only filter paper approved for the filtration
system. Failure to do so will increase the likelihood of system malfunction.
9.
Replace the hold-down ring.
Bubbling oil indicates air is being pumped through
the oil return lines.