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4.6.2 Built-In Filtration System - Annual
Inspect all oil-return and drain lines for leaks and verify that all connections are
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tight.
Inspect the filter pan for leaks and cleanliness. If there is a large accumulation of
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crumbs in the crumb basket, advise the owner/operator that the crumb basket
should be emptied into a fireproof container and cleaned daily.
Verify that all O-rings and seals are present and in good condition. Replace O-rings
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and seals if worn or damaged.
Check filtration system integrity as follows:
Verify that filter pan cover is present and properly installed.
With the filter pan empty, place each vat into fill vat from filter pan selection (see
section 2.3.7 of the FQ4000 Controller Operation Manual), one at a time. Verify proper
functioning of each oil return valve by activating the filter pump using the fill vat from
drain pan selection. Verify that the pump activates and that bubbles appear in the
cooking oil of the associated frypot.
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 by using the drain to pan selection (see
section 2.3.6 of the FQ4000 Controller Operation Manual). Now using the fill vat from pan
drain pan selection (see section 2.3.7 of the FQ4000 Controller Operation Manual), allow
all oil to return to the frypot (indicated by bubbles in the cooking oil). Press the check
button when all oil is returned. The frypot should have refilled in approximately 2
minutes and 30 seconds.
4-5
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Troubleshooting
