Ecs galley extractor fan control un it

Robin

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Has anyone taken these apart? Ours works blowin in but on the 'extract' position, so reversed. On 'in' it sucks out on slow position but only on fast if knob is clobbered with summat weighty, thereafter it can go off anytime or just slow right down at will. Our galley is small and extraction when cooking very desirable.

TIA
 

pvb

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Well, you seem to have 2 issues. Firstly, the connections to the fan motor seem to be reversed - if you correct that then you'll have it blowing out on the "extract" position. Secondly, sounds like the switch contacts are dirty/corroded inside the control box. You might try contact spray to clean them.
 

Robin

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Well, you seem to have 2 issues. Firstly, the connections to the fan motor seem to be reversed - if you correct that then you'll have it blowing out on the "extract" position. Secondly, sounds like the switch contacts are dirty/corroded inside the control box. You might try contact spray to clean them.

My thoughts too, there are 2 visible screws on the case front but not sure if the control knob needs to come off first(no visible lock screw on it) to remove the case itself or not, it is in a tight corner so am reluctant to meddle and potentially drop screws into nowhere land. I even have some contact cleaner spray if I get that far. Also not sure if the connections to reverse motor are easy reached or better done at the equally awkwardly located motor unit. Have you had one apart??
 

matthewriches

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From memory it should just be a sharp tug of the control knob to release it from the shaft.... oh errr missus!

The control inside in a simple PWM circuit so you may find that this has had enough and something on the board is causing the fan to misbehave regarding the random speed changes. Could be the potentiometer needs a spray but can't see it as they're normally fairly well sealed unless in a dirty environment.

As mentioned, swap the output wires and fan will spin the other way.
 

pvb

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My thoughts too, there are 2 visible screws on the case front but not sure if the control knob needs to come off first(no visible lock screw on it) to remove the case itself or not, it is in a tight corner so am reluctant to meddle and potentially drop screws into nowhere land. I even have some contact cleaner spray if I get that far. Also not sure if the connections to reverse motor are easy reached or better done at the equally awkwardly located motor unit. Have you had one apart??

No, haven't taken one apart, but it looks as if it will only have a simple 5-position rotary switch inside it. If there's no visible screw on the knob, then it should pull off. The fan should just have a red wire and a black wire, connected with small spade terminals to the switch. From a photo of the fan, it doesn't look as if there's a connection at the fan body (see pic).

View attachment 75818

Having looked at a photo of the switch unit, I have to say it has rather ambiguous labelling. I assume you're supposed to turn the switch anticlockwise to extract air?

View attachment 75819
 
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Robin

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Thanks, is the potentiometer itself totally sealed up or open faced and sprayable do you know?. The unit sits above the hob so could get greasy fumes in it...my speciality is wok stir fry stuff.:eek:
 

matthewriches

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Ah, if it is the one PVB has linked to then it isn't a variable potentiometer, that one has a few different values for fixed speed control.

The knob has a little o ring behind it but that's about it so the grease theory might be correct!
 

Robin

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No, haven't taken one apart, but it looks as if it will only have a simple 5-position rotary switch inside it. If there's no visible screw on the knob, then it should pull off. The fan should just have a red wire and a black wire, connected with small spade terminals to the switch. From a photo of the fan, it doesn't look as if there's a connection at the fan body (see pic).

View attachment 75818

Having looked at a photo of the switch unit, I have to say it has rather ambiguous labelling. I assume you're supposed to turn the switch anticlockwise to extract air?

View attachment 75819

That's the one and ambigious it is, extract on ours is anti clockwise currently.
 

pvb

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That's the one and ambigious it is, extract on ours is anti clockwise currently.

Which is correct then, but the curly arrows under the switch do confuse! It would have been much clearer to label the switch positions "In fast" "Out slow", etc.
 

Robin

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Well I've gone and dunnit now, took it apart and reversed the leads. Switch is fully sealed not serviceable. In reassembling knob is now upside down so label logic clearer albeit irrelevant as it only does 'fast' or slow extract now. located a new switch source but currently out of stock anyway, at £36 plus plus :disgust: Will reserve for Smokey cooking days only and turn on/off via it's breaker, lateral thinking rules.
 
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Robin

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Passed first mini trial today OK with turkey bangers, caramelised onions, sauted baby mushrooms and bubble and squeak mash all achieved without the smoke detector chirping it's objections:encouragement:
 
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