Hello! tell me, please, in what case, or when a malfunction of the deep fat Henny penny 581 may open the lid of the deep fat? thank you!
Only when the fryer pressure is at 0. opening it without waiting for venting will cause any moisture inside the oil to flash to steam and burn anyone near the unit. Let alone the oil mess all over. So the real answer here is NEVER.
I find your question confusing. Are you asking why it opens by itself, why it won't close properly...or what?
Also...the model you gave appears incomplete. Can you provide a complete model number?
The only 581 I could find is a PFV-581
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