Converting MaxAir 35 from gasoline to electric

[Vthartford]

Has anyone converted their gas Coltri MCH-6 compressor to electric? My compressor currently has an automatic shutoff. IF i used a magnetic starter and and a contactor attached to the automatic shutoff, I dont see an issue with switching the motors. What size motor does the electric version run? Thanks

 

[TrimixToo]

Size the motor correctly, plumb a proper pressure switch into the magnetic starter, get the pulley sizes right and Bob's yer uncle. (I converted my K14 from gas to electric years ago.)

 

[rcontrera]

The single phase electric 220 motor has a starter off/on switch that comes standard with it and can easily be used with a pressure switch. The 115 model also comes standard with an off/on switch but draws so much -power, that you will have to add a supplemental starter.

 

[KentB]

heres the rating plate for my MCH6. I didnt convert it though I bought it this way

 

[iain/hsm]

heres the rating plate for my MCH6. I didnt convert it though I bought it this way

Great response, and a great example of crucial information that is missed by most with the MCH 6
That is the motor mounting base is built for the European market. The EU motor frame size is 90L .

That is 90mm from base to centreline of the shaft and L for longer length. Critically the motor mounting slots are spaced for the IEC standards and not, as for most American motors under the American NEMA frame standard.

In a word with an equivalent off the shelf American NEMA motor it won't fit the MCH 6 motor slots on the frame

http://ecatalog.weg.net/files/wegnet/WEG-weg-technical-poster-ustechposter-brochure-english.pdf

 

[KentB]

Duct tape it obviously !!!!

I have no idea where Callahan is but glad I could help!
I didn't know what you just pointed out so I'm sure the OP appreciates it

 

[iain/hsm]

Duct tape it obviously !!!!

I have no idea where Callahan is but glad I could help!
I didn't know what you just pointed out so I'm sure the OP appreciates it

And if he doesn't appreciate it now........ he sure will when he finds a Yankee motor dont fit.
All the infomation you need was in your photo.

 

[rcontrera]

Great response, and a great example of crucial information that is missed by most with the MCH 6
That is the motor mounting base is built for the European market. The EU motor frame size is 90L .

That is 90mm from base to centreline of the shaft and L for longer length. Critically the motor mounting slots are spaced for the IEC standards and not, as for most American motors under the American NEMA frame standard.

In a word with an equivalent off the shelf American NEMA motor it won't fit the MCH 6 motor slots on the frame

http://ecatalog.weg.net/files/wegnet/WEG-weg-technical-poster-ustechposter-brochure-english.pdf

Thanks for bring that to their attention. Last time I mentioned that, I got accused of trying to sell Italian motors.

 

[iain/hsm]

Thanks for bring that to their attention. Last time I mentioned that, I got accused of trying to sell Italian motors.

The Yanks love "Made in China" too much.
But from a pragmatic approach that small motor from a Coltri compressor supplier is the only practical way with these small frame compressors. Add to which that Coltri also included the start capacitor, the stop/start push buttons and the hours run meter.
Its not a bad deal for the end user and a darn sight easier than drilling and grinding new slots for a home made Yankee motor, even if its imported from PRC.