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DavecUK

It's that time of year again - New Roaster coming on test

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I'll try with your hand
Yay, a free trip to Austria!

Laissez les bons temps rouler

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OK I got the Lubricant samples and I really like the Ambergrease FG2 for both front and rear bearings. While I was testing i did a little maintenance video for front and rear bearings, plus the fan.

 

[video=youtube_share;g7em4dB0Uxg]


 My reviews at https://coffeeequipmentreviews.wordpress.com/ - Various Machines and grinders, Amazon Dalian 1kg Drum Roaster: YouTube channel at https://tinyurl.com/szhgxzl .......

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OK I got the Lubricant samples and I really like the Ambergrease FG2 for both front and rear bearings. While I was testing i did a little maintenance video for front and rear bearings, plus the fan.

 

[video=youtube_share;g7em4dB0Uxg]

:popcorn:

 

"plus the fan"

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One thing to pay attention when cleaning the fan:

 

the impeller has a balancing part(metal clamp) on one of the fins - it is good not to remove it or better to mark it's position in case you will need to put it back.

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One thing to pay attention when cleaning the fan:

 

the impeller has a balancing part(metal clamp) on one of the fins - it is good not to remove it or better to mark it's position in case you will need to put it back.

 

Good call, in fact it's not necessary to remove the impeller at all, just brush with an old paintbrush and use a vacuum cleaner. I also ought to add the AS disclaimer below.

I am not connected with the Global CRC Industries company who make Ambersil and Action Can, I have no financial interest or shares in the company, I was not paid to write the review and receive no commission on sales. I do admit that I was given sample products FOC, but I was dammed if I was going to purchase them when I already had purchased suitable products some years ago now, just to produce a video and user guide for which I also received no payment or benefit in kind from Bella Barista, Dalian Amazon, youtube advertising (none of my videos are monetised) or anyone else I have not thought of. If I recommend the products it's because I think they are good products but I don't know if they are the best products because I have not tried them all.

 

Tecalemit are still trading but my grease gun is approximately 60 or 70 years old and the modern grease guns are not the same, these are still available from vintage tool suppliers should you wish to buy one, but I am not affiliated with any. I can strongly recommend the Tecalemit 3020 as it has lasted without any new parts for the last 60 or 70 years and seems a good product for the Dalian Amazon roaster.


 My reviews at https://coffeeequipmentreviews.wordpress.com/ - Various Machines and grinders, Amazon Dalian 1kg Drum Roaster: YouTube channel at https://tinyurl.com/szhgxzl .......

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Quick photo to show the balancing clip on impeller - one "heavy" clean can remove it without noticing something was there

 

Impeller lr.jpg

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out of curiosity, does every fan have one or is it subject to imbalance of individual construction (as in car wheels)?

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It depends on manufacturer and the cost of the product - on simple cheap fans you will not find it

 

For a good product, manufacturer finds a way to balance the propeller or impeller either by adding weights (similar to car wheels) or removing some weight on the opposite side by polishing or cutting or drilling a bit of material

 

Balancing is extra cost but it pays off - lower noise and less stress/longer life on bearings.

 

Frankly I was a bit surprised to find one on Chinese unit :D

Edited by Dotix

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thx mate!

yea I was aware of the removing weight thing, but as you say it's more of a premium procedure to even look at weight balance.

I wondered mostly whether it'd be found on every Dalian Amazon as I don't recall seeing one when I cleaned mine lately, maybe flown off earlier?

Doesn't get noisy after all, so perhaps just luckily well produced

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Well, I am planning to check the balancing on mine at some point when I will get a bit of spare time and I will share the results.

 

From the sound of it, there is room for improvement.

 

Nevertheless you need a lot of patience to do it properly with household tools...

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Well, I am planning to check the balancing on mine at some point when I will get a bit of spare time and I will share the results.

 

From the sound of it, there is room for improvement.

 

Nevertheless you need a lot of patience to do it properly with household tools...

once upon a time I was into RC planes.

If it's still around and if I can find it, I used to have a propeller balancing tool... oh good old times

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That will be static balancing and you will need to disassemble the unit - not practical.

I will go different way with dynamic balancing to check whole unit: motor+cooling propeller+exhaust impeller

 

Don't know if effort will justify the results - Dalian unit is pretty "silent" as it is

 

Sorry for being bit off-topic in Dave thread - also in RC everything(planes/cars/copters) :D

Edited by Dotix

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That will be static balancing and you will need to disassemble the unit - not practical.

I will go different way with dynamic balancing to check whole unit: motor+cooling propeller+exhaust impeller

 

Sorry for being bit off-topic in Dave thread - also in RC everything(planes/cars/copters) :D

nice! Let us know how it went

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fans are Wo Lin units, one of the better Chinese manufacturers. I spoke to them about 4 years ago.

 

I did go through everything on the roaster with a fine tooth comb and was testing for 6-9 months prepping for the redesign. It was a lot of work, but i like to be thorough (well as thorough as I can be).


 My reviews at https://coffeeequipmentreviews.wordpress.com/ - Various Machines and grinders, Amazon Dalian 1kg Drum Roaster: YouTube channel at https://tinyurl.com/szhgxzl .......

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OK I got the Lubricant samples and I really like the Ambergrease FG2 for both front and rear bearings ...

Hello Dave - Thank you for your great advice on Dalian maintenance. I tried to find a source for Ambergrease FG2 in Germany or at least a store with shipping to Germany - unfortunately I had no success so far. It looks like this brand is more "prominent" in UK ...

Do you know how I could get hands on this material in Germany? Thank you.

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I don't and every time I search it knows I am in UK. I can't believe it's not sold in Germany. You could check with Ambersil for a German distributor.


 My reviews at https://coffeeequipmentreviews.wordpress.com/ - Various Machines and grinders, Amazon Dalian 1kg Drum Roaster: YouTube channel at https://tinyurl.com/szhgxzl .......

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The other way of course is a forum buy with a member who travels to germany regularly and can post it once over there. I checked out the postage to Germany from Amazon and £20!!!! or perhaps you can order from a neighbouring country...I dunno. It's a great product, seems daft it's not sold in Germany??


 My reviews at https://coffeeequipmentreviews.wordpress.com/ - Various Machines and grinders, Amazon Dalian 1kg Drum Roaster: YouTube channel at https://tinyurl.com/szhgxzl .......

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Where in Germany are you Frederic? - My Mum is going to Berlin on the 12th April as will I on the 27th July...

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I was pointed to this thread by a fellow member, who just over a year ago came to see my machine, bought one himself and now provides the link to coffee suppliers for a small group; an all round good egg, in other words. Many thanks, Batian

 

I have now undertaken 197kg of roasting, which means that with the 3 sacrifice roasts I have reached the 200kg mark. A small spot of maintenance seemed to be in order. My rear bearing nipple is at the 12 o'clock position and the lateral spacing does not permit a grease nozzle to be attached. First task was this to replace that nipple, many thanks (again) to Batian who had found the correct ones. I await my new grease (the one recommended by Dave C).

 

Despite the video evidence (page ? earlier) the front bearing was not a simple removal. It appeared to be stuck on. A judicious tap on a metal rod angled into one of the flange plate holes freed the bearing. There was some evidence of coffee oils (or perhaps very old grease) on the shaft and around the mating face that might have been the cause. Cleaned, re-greased and spun up, the machine is now totally quiet (it had been a little squeaky before). 200 roasts represents (at an average 2kg per roast session) around 200 hours use/rotation. My judgement is that I probably left it too long to service the front bearing and should aim to maintain the front bearing every 100 hours, but I will check to see whether it is stuck again after another 50 hours or so.


ECM Synchronika, Olympus 75, Dalian Amazon, Gene Cafe and a small quantity of green beans

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The deposits on the front bush bearing would have been probably coffee oils, but also water born contaminants from the drum during roasting. Although stated as self lubricating my own experience of mechanics tells me that sure, but perhaps not in the presence of moisture and roasting produces moisture. Hence I lubricate mine. The good news is you can buy the replacement caps with the bearing in and because it's only the weight of the drum sag from the rear bearing, that even if there is wear on bearing or shaft, it won't make any difference, unlike a caged or needle roller bearing. Rotational speeds are very low and with the lubricant I recommend the bearing should really go on decades regardless.

 

Lubrication wise, I would think once every 3 months will be fine and once every 6 months on a lightly used roaster. However there is no problem doing it monthly if you want and it only needs a smear. Watch my video and be super careful about marking the 12 o clock position on the cap so it goes back the same way and absolutely make sure it's properly home and sitting flush with the front plate (you will see the smaller circular indentation and the corresponding part of the cap that MUST sit within it.). In fact anyone with a new roaster should check the factory have installed this cap correctly and I will mention this as an additional check for Bella Barista.

 

Edited by DavecUK

 My reviews at https://coffeeequipmentreviews.wordpress.com/ - Various Machines and grinders, Amazon Dalian 1kg Drum Roaster: YouTube channel at https://tinyurl.com/szhgxzl .......

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+1 for @Batian is ace!

 

Re grease nipple: has anybody else had trouble releasing gun attachment from factory fitted nipple? Mine appears to be a bit big, so will exchange as well before next lube.

 

Out of curiosity @DavecUK what would happen to an incorrectly mounted front bearing (rotated placement)?

Do you reckon the bearing to have adapted to an initial non-axial alignment that stems from assembly tolerances?

 

I'll definitely punch a 12 o'clock mark in the base when disassembling next time.

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+1 for @Batian is ace!

 

Re grease nipple: has anybody else had trouble releasing gun attachment from factory fitted nipple? Mine appears to be a bit big, so will exchange as well before next lube.

 

Out of curiosity @DavecUK what would happen to an incorrectly mounted front bearing (rotated placement)?

Do you reckon the bearing to have adapted to an initial non-axial alignment that stems from assembly tolerances?

 

I'll definitely punch a 12 o'clock mark in the base when disassembling next time.

 

Wow, dunno. What I do know is that it should sit flat to the front plat, mine does only in the one position. Is this due to hole alignment when the front plate is drilled and tapped, is it the way the cap is made....who knows. However with a bearing it's good engineering practice to put it back the same way, even if it can go back in any 1 of 3 positions. As for adaptation, all bearings of this nature will, in the same way as moving parts within engines do.

 

I think you should punch a 6 O clock mark in the base ;)


 My reviews at https://coffeeequipmentreviews.wordpress.com/ - Various Machines and grinders, Amazon Dalian 1kg Drum Roaster: YouTube channel at https://tinyurl.com/szhgxzl .......

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+1 for @Batian is ace!

 

Re grease nipple: has anybody else had trouble releasing gun attachment from factory fitted nipple? Mine appears to be a bit big, so will exchange as well before next lube.

 

 

The same on mine - took some muscle to release the gun.

 

A good idea will be to polish a bit the nipple.

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Don't they do grease guns with half spheres (cups) on the end any more rather than locking jaws! Old ideas but seemed to work then as they do today.

 

You can still buy Vintage guns like mine on ebay.


 My reviews at https://coffeeequipmentreviews.wordpress.com/ - Various Machines and grinders, Amazon Dalian 1kg Drum Roaster: YouTube channel at https://tinyurl.com/szhgxzl .......

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