Monitor 441 Heater

[MEWelding.com]

Originally Posted by HayZee518

the way you do the job -- is -- unplug the unit, take the front panel off. unfasten the through the wall inlet/exhaust tube and move the heater to where you can work on it. remove the flex line on the blower outside the heater unit. unfasten the rubber elbow inside the unit. unscrew all the screws that hold the fan in the unit. remove the screws that hold the impeller cover and pull off the impeller - this has a left hand thread. make a diagram of how the impeller goes on taking into account the spacers. unscrew the motor and put back together reverse order.
two wires go to the motor, the other two go to the damper solenoid.

You are an asset to this site and monitor owners everywhere. Thanks again.

[teehar]

Originally Posted by HayZee518

Arne - I have a monitor 41 which is one series BELOW the 441. I do all my servicing on the heater. I have a pdf file for the 441 which I could email to you. as far as a repair manual, you'll never get one. NO ONE on this green earth will EVER sell you one. I tried to get one through MPI but since I'm not an authorized dealer, no way. Some replacement gaskets I was able to get from mc master- carr industrial supply and a piece of boro-silicate glass for the view port.

Don't mean to jump in on everyone's thread but kind of hated to start a new one to.

Anyway thanks for all the valuable info on the Monitor heaters HayZee518.

My 441 was acting up a week or so ago and I decided to tackle it on my own.The burner would come on then in just a minute or so go back out.Wouldn't get far enough into the heat cycle for the fan to come on.Then the dreaded flashing lights would start.So I replaced the outside filter,cleaned the internal filter and it appeared that it was getting plenty of oil.The problem still persisted.Finally I broke down and took the grill and top cover off to see what makes it tick.lol I noticed I could barely see a flame through the window so I decided to take it out.The window was completely black and inside the burner chamber was full of soot.Next I decided to remove the plate that covers the burner.I took a vacum cleaner and sucked all that mess out.I also cleaned the inside as best I could with an old cloth.I noticed the gasket on both the window and chamber covers was very crumbly.I just pieced it back together and screwed everything back up tight.Now the 441 is working great but every once in awhile I get a whiff of exhaust.I didn't have this problem last year and I'm sure it's because of the gaskets needing replaced.

I have searched all over the internet and can't find what I'm looking for.I noticed you mentioned in your post mc master- carr industrial.Do they have a web page?Also what type of gasket would you recommend I get?

Thanks!

[HayZee518]

www dot mcmaster dot com - page 3372 stock 8813K11 - runs about 6 bucks for 1 inch wide 25 foot long. much, much cheaper than mpi gasket product which goes for $16.50 for a gasket. a replacement glass is made of boro silicate. again a 1 inch wide piece by 3 inches is about 4 bucks. mpi wants 45 bucks for a glass piece. oh by the way the burner head, that stainless steel affair that looks like an inverted soup bowl costs $72.50.

[teehar]

Originally Posted by HayZee518

www dot mcmaster dot com - page 3372 stock 8813K11 - runs about 6 bucks for 1 inch wide 25 foot long. much, much cheaper than mpi gasket product which goes for $16.50 for a gasket. a replacement glass is made of boro silicate. again a 1 inch wide piece by 3 inches is about 4 bucks. mpi wants 45 bucks for a glass piece. oh by the way the burner head, that stainless steel affair that looks like an inverted soup bowl costs $72.50.

Thanks a bushel HayZee518!!