old electrolux freezer / ranco stat

[keithwilliams]

been to an old lux freezer with a ranco stat with a very short coiled capillary. terminals are numbered 1 2 3.
the replacement is a ranco k54 p3101 with the usual numbers 6 4 3.
can you tell me how this relates to 1 2 3? please.
i suspect that 1 is live and 2 is motor is that right
wiring on freezer is brown which was 1
black which was 2
white which was 3
thanks

[Dave_Conway]

Re: old electrolux freezer / ranco stat

6 = live
4 = compressor
3 = light or other switch off at zero

😀

Dave.

[keithwilliams]

Re: old electrolux freezer / ranco stat

thanks dave,
i didn,t make myself clear enough. i know how to wire a new stat. the problem is that there are all sorts of wires etc in the stat compartment and i suppose i was looking for an easy way to work out which was which by identifying the 1 2 3 terminals on the old stat.
thanks

[Dave_Conway]

Re: old electrolux freezer / ranco stat

Ah, sorry 😳

Have you got the model number ? I’ll check to see if a wiring diagram is available 🙂

Dave.

[MKR]

Re: old electrolux freezer / ranco stat

Dave_Conway wrote:6 = live
4 = compressor
3 = light or other switch off at zero

😀

Dave.
On the K54’s I think you will find it’s;
6 = All’s well light (3 on old stat)
4 = compressor (2 on old stat)
3 = Live (1 on old stat)

On K59’s Dave’s got it right.

[keithwilliams]

Re: old electrolux freezer / ranco stat

thanks mkr

all now makes sense. the thing that was getting me was the fact that there was no continuity between 6 and 4 at room temperature. therefore if it was wired same as a vt9 then surely these would have been closed.

i’ll experiment with the stat this weekend with my multimeter and cooling it in my own freezer. i’ve bought myself some time with the customer by cleaning the contacts in her old stat to at least get it running. word back is that it’s working fine so far.

incidentally the tech guy at ranco was clueless. he even told me that the old stat was definately NOT one of theirs even when i told him it had ranco stamped all over it.

cheers
keith

[MKR]

Re: old electrolux freezer / ranco stat

keithwilliams wrote:

all now makes sense. the thing that was getting me was the fact that there was no continuity between 6 and 4 at room temperature. therefore if it was wired same as a vt9 then surely these would have been closed.

6 is the feed to the “all’s well light” on these older models (not a high temp warning light.) When the stat cools to a safe temp, the circuit will be made between 3 and 6 (and 4 until the compressor switches off.)

keithwilliams wrote:incidentally the tech guy at ranco was clueless. he even told me that the old stat was definately NOT one of theirs even when i told him it had ranco stamped all over it.

We are talking stats that are over 25 years old… probably before he was born 😆

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