Pilot light will stay lit. Its a very old unit not sure if the wires need replaced
If your fryer is not lighting I would tell you this first: Be sure you are familiar and able to mess with flammable gas if so, I would check the gas supply first. Sometimes it's just the quick connect behind the unit. Other than that there are 3 things that control the gas, the thermostat, the gas valve itself and the high limit. If the pilot is working, most likely it is the thermostat or the hi limit. I would test all 3 of those components and ensure that your burners are clean. Here is the parts manual: http://download.partstown.com/is-bin/intershop.static/WFS/Reedy-PartsTown-Site/-/en_US/manuals/IMP-IF-Series_pm.pdf I hope this helps.
I believe on the Imperial the pilot will stay lit with a over-temp trip. Not like most fryers. Make sure the heat switch is on and it is set to a cook temperature. Being computer controlled, You may have a board problem. Test for gas valve power to the main, and that the pilot sensing has voltage. Not a fan of Imperial's control system.
Never heard of a fryer that didn't extinguish the pilot in an over temp condition.
Here's some diagrams:
Imperial Fryer Wiring Diagrams
That's true on the standard, but on the electronic it is not. Surprised the hell out of me too.
It's not incredibly enlightening, but here's the owner's manual for the Imperial IFS series as well:
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