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Old 30-03-2017, 07:45 AM   #171
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Originally Posted by braziliain View Post
Have you had these academy flasks on a gas ring to boil the wort? Link seems to suggest no flames in contact with the flask?
Sorry mate, not tried that, I am all electric in the kitchen.

Not tried heating these on my hob anyway - I boil my wort in a pan and then pour into the Academy glass flask for cooling, then adding the yeast.

I will have to try one of my smaller 500ml/1litre academy glass flasks for boiling wort directly on my halogen electric hob.

My new 2litre flask should arrive today - hopefully in one piece !
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Old 31-03-2017, 08:49 AM   #172
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Had one of those really annoying moments, the parts are coming together for a stir plate, the bar and PWM were delivered, so a quick cobble together of the fan, 12v supply and the PWM, turn on......... and nothing, fan spins fine when attached direct to the supply so i am assuming a dead PWM, need to find a meter to check it over.

I know they are only cheap but you'd still expect it to function...... mini rant over.
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AG#3 English Style IPA - Brew Date 29/5/17 - in PB#1 (11/6)


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Old 31-03-2017, 09:08 AM   #173
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Originally Posted by photek1000 View Post
Had one of those really annoying moments, the parts are coming together for a stir plate, the bar and PWM were delivered, so a quick cobble together of the fan, 12v supply and the PWM, turn on......... and nothing, fan spins fine when attached direct to the supply so i am assuming a dead PWM, need to find a meter to check it over.

I know they are only cheap but you'd still expect it to function...... mini rant over.
Most of them will only work if they are wired the right way round. Check the polarity!

PS

If you're lucky it will still work 'cos you haven't burned it out!
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Last edited by Dutto; 31-03-2017 at 09:09 AM. Reason: Add PS
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Old 31-03-2017, 09:41 AM   #174
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Originally Posted by Dutto View Post
Most of them will only work if they are wired the right way round. Check the polarity!

PS

If you're lucky it will still work 'cos you haven't burned it out!
Had a quick look at the eBay item I purchased and it stated that the diode was an LED for power-on, I wasn't getting that, so a closer examination and a quick whip around the cable connector block pins with a soldering iron and hey presto it works.

I don't know the quality of a £2 Chinese circuit board isn't what it used to be
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Primary FV: Empty

Conditioning:
AG#2 Hobgoblin Style Ruby (Bottled) - might take a while, it's not bad but then again it isn't good , Slowly improving, very little carbination, bit to malty in flavour

Drinking:
Woodfordes Sundew + Falconers Flight Dry Hop (in PB#2)
AG#3 English Style IPA - Brew Date 29/5/17 - in PB#1 (11/6)


Yay, we're brewing again. - Up Next AG#4 - Brown Porter or a few short n shoddy Stove toppers (5L quick AG)

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Old 20-04-2017, 06:29 PM   #175
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Had a quick look at the eBay item I purchased and it stated that the diode was an LED for power-on, I wasn't getting that, so a closer examination and a quick whip around the cable connector block pins with a soldering iron and hey presto it works.

I don't know the quality of a �£2 Chinese circuit board isn't what it used to be
What did you have to do to get it working, My bits arrived from China and I'm having similar issues but I do have a red LED on when powered up.

Fan spins when wired directly to power, but won't spin when wired through the PWM.

Power supply is 12v 5A.

Any ideas?
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Kolsch, Plum Wine, Blackberry Wine (first wine).

Conditioning: Cornish Oatmeal Extra Pale Ale (St Austell Yeast)
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Drinking:
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Old 20-04-2017, 06:38 PM   #176
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Might be the power supply, 5a.

Pwm I ordered is 3a.

Will try a 2a supply, hope I haven't fried the pwm!
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Kolsch, Plum Wine, Blackberry Wine (first wine).

Conditioning: Cornish Oatmeal Extra Pale Ale (St Austell Yeast)
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Old 20-04-2017, 08:54 PM   #177
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Might be the power supply, 5a.

Pwm I ordered is 3a.

Will try a 2a supply, hope I haven't fried the pwm!
If the fan works when connected directly to the power supply then the PWM is the problem. Presumably you've checked the polarity of the connections? Do you have a multimeter to check the output on the PWM?

The amperage rating on the power supply and the PWM are simply the maximum load they can handle, the fan is nowhere near that so don't worry about that. It would appear that you have a bad PWM.
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Old 21-04-2017, 08:52 AM   #178
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Originally Posted by Spapro View Post
What did you have to do to get it working, My bits arrived from China and I'm having similar issues but I do have a red LED on when powered up.

Fan spins when wired directly to power, but won't spin when wired through the PWM.

Power supply is 12v 5A.

Any ideas?
Mine was an issue with at least one dry joint on the power connector, once I waved the soldering iron over it all was good.

As suggested best thing to do is check the polarity of the input and check the output witha meter.

If you're getting the LED on then that's a decent sign the unput voltage is there, on mine the brightness increases at the same rate as the knob is turned.
__________________
Primary FV: Empty

Conditioning:
AG#2 Hobgoblin Style Ruby (Bottled) - might take a while, it's not bad but then again it isn't good , Slowly improving, very little carbination, bit to malty in flavour

Drinking:
Woodfordes Sundew + Falconers Flight Dry Hop (in PB#2)
AG#3 English Style IPA - Brew Date 29/5/17 - in PB#1 (11/6)


Yay, we're brewing again. - Up Next AG#4 - Brown Porter or a few short n shoddy Stove toppers (5L quick AG)

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Old 21-04-2017, 10:37 AM   #179
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Thanks chaps will check with my multimeter.

My LED does get brighter as I turn the dial up, the fan gives a little judder at around 70% dial turn as though trying to spin but never gives more than a little judder. Fan spins perfectly when wired direct to power.

Am I looking for 12volts on the live output on the PWM when dial turned to max, and lower voltage when dial turned down, is that how it works ?
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Kolsch, Plum Wine, Blackberry Wine (first wine).

Conditioning: Cornish Oatmeal Extra Pale Ale (St Austell Yeast)
.

Drinking:
Mongrel Pale Ale 2, Lagunitas IPA clone with San Diego Super Yeast.
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Old 21-04-2017, 04:25 PM   #180
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Totally stumped now

Measured with multimeter, input into pwm is 12.02v and output to fan is 11.98v with dial turned right up. Dial turned right down output to fan is 1.5v.

So pwm appears to be working correctly I think. Connected fan to power and it spins but wired back through pwm and it gives a little nudge around 70% but won't spin!

Connections look good, polarity and solder on back of pwm looks fine.

Any ideas chaps?
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Kolsch, Plum Wine, Blackberry Wine (first wine).

Conditioning: Cornish Oatmeal Extra Pale Ale (St Austell Yeast)
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Drinking:
Mongrel Pale Ale 2, Lagunitas IPA clone with San Diego Super Yeast.
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