I have to admit that I'm not a very good cook but...
I'm curious to know what exactly causes problems to the more advanced users of Frigidaire ranges!
I know that some of the fancier 1965-70 Frigidaire ranges do have more complicated oven controls (we simple-minded Canadians didn't get these as GM probably thought we wouldn't be able to use or fix features like the Tender-Matic controls!)
But I don't see anything very complicated with pre-1965 or the 1970's ranges! Of course, the pre-1964 40" Frigidaire ranges with two ovens had their left oven located quite low because some of the pre-1960 models had to accommodate a deep well cooker but other than that, I don't see other really annoying characteristics. Some people don't like having no glass in their oven door and that's quite common on Frigidaire ranges but what else?
The only control that I think might lead some to confusion is the "Broiler Grill" control on some Imperial and Custom Imperial ovens as the "Rare" setting means "HI" and "Well" means "LOW".
To use the ovens, on most models, you simply set the thermostat to the desired temperature (no selector switch except on some BOL U.S. and again on some Canadian models, even the fancier ones). And on all 1960 and newer ranges, the infinite switches for the surface units are graduated from "SIM" to "HI" just like they still are on most ranges today.
To me, that's easier to understand for the first use than the 2-3 numbers on some GE pushbuttons. And even the earlier pre-1960 Frigidaire 5 heat and infinite controls, as long as they are located in a place you can read them, aren't too complicated, they just start on "High" rather than "SIM".
To me, the least intuitive controls on Frigidaire ranges are those for the burners of the Loewy era as they are hard to read and placed on the front of the range, too low to see what's written on them when you're standing beside the range and away from the illuminated area (see the last pic). They are also too easy to reach for kids and can even be turned on accidentally if you pass nearby. I don't get why controls at the front of the ranges are gaining in popularity today with all the concerns people and our government now have with safety.
The most intuitive Frigidaire surface unit controls are those from the 1969-79 period which display a red zone when they're turned on. If you don't like woodgrain panels on which they are mounted, just stay away from the 1971-74 models that I like so much!
And I can't see what else could be challenging about using these old ranges. I mean, setting the oven on newer ranges with their electronic controls is much less intuitive than that! Or even trying to set the start time and the 4 programs on a late-1970s Amana Touchmatic II... Now, that requires some concentration! Even if you just hit the "Start Time" button accidentally!
