NUAIR REVOLUTION'AIR Movy (MECAFER) compressor broken down which no longer exceeds 2 bars

And if they were repairing rather than throwing and change? Rediscover the pleasure of the repairs yourself. How to diagnose a problem or find spare parts? Repair itself is way to save money generally!
User avatar
Flytox
Moderator
Moderator
posts: 14138
Registration: 13/02/07, 22:38
Location: Bayonne
x 839

Re: NUAIR Movy compressor which no longer exceeds 2 bars (without leaks?) ...




by Flytox » 25/09/20, 20:30

Christophe wrote:
Flytox wrote:For the brass rivet it is also found in the same stores as mentioned above, the risk is having to buy a box of 500 : Mrgreen:


+ the tool for crimping !!!

You can relatively easily tweak a die and a punch with a drill bit (die) and a punch with a center punch ...
0 x
Reason is the madness of the strongest. The reason for the less strong it is madness.
[Eugène Ionesco]
http://www.editions-harmattan.fr/index. ... te&no=4132
Ahmed
Econologue expert
Econologue expert
posts: 12298
Registration: 25/02/08, 18:54
Location: Burgundy
x 2963

Re: NUAIR REVOLUTION'AIR Movy (MECAFER) compressor broken down which no longer exceeds 2 bars




by Ahmed » 25/09/20, 21:38

... more like a pin punch than a punch.
0 x
"Please don't believe what I'm telling you."
User avatar
Forhorse
Econologue expert
Econologue expert
posts: 2485
Registration: 27/10/09, 08:19
Location: Perche Ornais
x 359

Re: NUAIR Movy compressor which no longer exceeds 2 bars (without leaks?) ...




by Forhorse » 25/09/20, 21:43

Christophe wrote:Yes that's why I abandoned this idea ... it does not prevent compressors of better quality from having one at the cylinder head outlet or a little later ... in addition to the reed valves.

No doubt to tire them less?


I think this is to prevent losses (leaks) in the cylinders during downtime. The reed valves are never 100% tight .. where the ball valves (or similar) are more tight but also have a greater inertia.
At work we have large piston compressors without oil (for "food" air) and it is also reed valves directly in the cylinder head ... but it is a wearing part that costs an arm and a leg (but good announced life of at least 4000 hours that they hold without problem)
0 x
Christophe
Moderator
Moderator
posts: 79117
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10972

Re: NUAIR REVOLUTION'AIR Movy (MECAFER) compressor broken down which no longer exceeds 2 bars




by Christophe » 30/12/20, 18:39

I had promised myself to finish this project before the end of the year ... so here is the rest:

a) It swelled me (pun intended) to buy 25 € in the USA or in China a wearing part... so I did not order the reed valves ...

b) So I tried a repair with ...a cut glass jar cover (like a pig) and a "normal" aluminum rivet that I ground on the piston side (there is a bore in the cylinder head which still leaves enough material to cut the rivet flush)

20201230_140500.jpg
20201230_140500.jpg (10.88 KB) Viewed times 4062


20201230_150536.jpg
20201230_150536.jpg (172.09 KB) Viewed times 4062


20201230_152159.jpg
20201230_152159.jpg (170.07 KB) Viewed times 4062


c) To my surprise it works ... pretty well : the compressor goes back to 8 bars without worries... I have not tried more: from 6 bars I have a leak at the pressure level ... as I never use these pressures I will not repair it ... : Mrgreen:

d) The most annoying thing was to put together this crap plastic fairing!

It remains to be seen the hold over time ... I imagine that the treatment of the cover will protect the valves ... for the mystery rivet ... I will keep you posted.

This compressor must run 10 hours maximum per year ... so it may take a few years! : Mrgreen:
0 x
Christophe
Moderator
Moderator
posts: 79117
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10972

Re: NUAIR REVOLUTION'AIR Movy (MECAFER) compressor broken down which no longer exceeds 2 bars




by Christophe » 30/12/20, 18:55

Oops forgot the snap photo:

20201230_183025.jpg
20201230_183025.jpg (275.81 KB) Viewed times 4052
1 x
Christophe
Moderator
Moderator
posts: 79117
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10972

Re: NUAIR Movy compressor which no longer exceeds 2 bars (without leaks?) ...




by Christophe » 30/12/20, 18:57

Forhorse wrote:I think this is to prevent losses (leaks) in the cylinders during downtime. The reed valves are never 100% tight .. where the ball valves (or similar) are more tight but also have a greater inertia.
At work we have large piston compressors without oil (for "food" air) and it is also reed valves directly in the cylinder head ... but it is a wearing part that costs an arm and a leg (but good announced life of at least 4000 hours that they hold without problem)


In fact there is a valve at the cylinder head outlet, I had not been careful with the dismantling!

If my repair takes 50 hours I would be happy ... it would make me between 5 and 10 years! : Mrgreen:
0 x
User avatar
GuyGadeboisTheBack
Econologue expert
Econologue expert
posts: 14823
Registration: 10/12/20, 20:52
Location: 04
x 4302

Re: NUAIR REVOLUTION'AIR Movy (MECAFER) compressor broken down which no longer exceeds 2 bars




by GuyGadeboisTheBack » 30/12/20, 19:06

I bought a compressor from the same brand. It burned down on the first use. I had another as a guarantee, same, but refunded. Result, finished the "without oil", I have a classic oil Einhell, on wheels and it works well.
0 x
Christophe
Moderator
Moderator
posts: 79117
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10972

Re: NUAIR REVOLUTION'AIR Movy (MECAFER) compressor broken down which no longer exceeds 2 bars




by Christophe » 30/12/20, 19:12

Bin ... it is sure that it is always better when it is lubricated ... although too much is not good either! Huh Macro ... : Mrgreen:

Now if this trick of the jar cover makes it possible to avoid dumping other compressors, so much the better!

All compressors have lamellar valves which wear out, right?
0 x
User avatar
thibr
I posted 500 messages!
I posted 500 messages!
posts: 723
Registration: 07/01/18, 09:19
x 269

Re: NUAIR REVOLUTION'AIR Movy (MECAFER) compressor broken down which no longer exceeds 2 bars




by thibr » 30/12/20, 20:42

I would rather have taken a piece of steel drink can, not aluminum, it seems to me to be more spring (elastic) but I have not tested : Wink:
the main thing is that it works :D
0 x
Christophe
Moderator
Moderator
posts: 79117
Registration: 10/02/03, 14:06
Location: Greenhouse planet
x 10972

Re: NUAIR REVOLUTION'AIR Movy (MECAFER) compressor broken down which no longer exceeds 2 bars




by Christophe » 30/12/20, 21:25

Yes the can was my first idea but it's much thinner and it's untreated ... so I fell back on the lid without really believing it because it's thicker ... but it works impeccably!

The advantage of the cover is its plastic coating: better sealing and less corrosion!

It remains to be seen in time ...
0 x

 


  • Similar topics
    Replies
    views
    Last message

Back to "failure, troubleshooting and repair: repair yourself? "

Who is online ?

Users browsing this forum : gegyx, MSNbot Media and 172 guests