Filter
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5-10
• Check filtration system integrity as follows:
− With the filter pan empty, place each oil return handle, one at a time, in the ON position.
Verify that the pump activates and that bubbles appear in the cooking oil/shortening (or that
gurgling is heard from the Power Shower port) of the associated frypot..
− Close all oil return valves (i.e., place all oil return handles in the OFF position). Verify
proper functioning of each oil return valve by activating the filter pump using the lever on
one of the oil return handle microswitches. No air bubbles should be visible in any frypot (or
no gurgling should be heard from the Power Shower ports).
− Verify that the filter pan is properly prepared for filtering, then drain a frypot of oil heated to
350°F (177°C) into the filter pan and close the frypot drain valve. Place the oil return handle
in the ON position. Allow all cooking oil/shortening to return to the frypot (indicated by
bubbles in the cooking oil/shortening or, on units with Power Showers, cessation of oil flow
from the Power Shower). Return the oil return handle to the OFF position. The frypot should
have refilled in no more than 2 minutes and 30 seconds.