copeland 7.5 hp

[hem057]

have several of these 3DB3 compressors, and was wondering if anyone has ever found a place to buy the reed valves, round not eliptical, I would like to open compressors and replace all of them, had a few fail in last several months and due to age of units should probably just replace all of them, three racks are running 13 of these compressors,

[jpsmith1cm]

I believe that a valve plate kit comes with both the round and elliptical valves.

Any copeland wholesaler can get it for you.

If you don't already know, watch the valve guide pins. If they are loose or worn, its JUNK!

[rocket]

Copeland includes with VP but will not sell seperately, just the reeds are available at CMP Corp (not sure of Quality)
http://www.cmpcorp.com

[hem057]

have ordered from cmp, so will let you know how they work for quality.

[powell]

hem057

Before you start looking you must get the full model number. The suction reeds are different depending if the model number has a "-" (dash) or an "A" after the first four characters.

3DB3A075E-T?? delta reed, the reeds are attached to the valve plate
OR
3DB3-075E-T?? laser reed, the reeds are not attached

[markettech]

hem057

Before you start looking you must get the full model number. The suction reeds are different depending if the model number has a "-" (dash) or an "A" after the first four characters.

3DB3A075E-T?? delta reed, the reeds are attached to the valve plate
OR
3DB3-075E-T?? laser reed, the reeds are not attached

Details Shmeetails................:rolleyes: Just slap in a reed - if it don't fit right, use a file.;)





:D

[powell]

Details Shmeetails................:rolleyes: Just slap in a reed - if it don't fit right, use a file.;)


MT,

I wish you lived in my neck of the woods................................I could sell you a lot of sh........... I mean reefer stuff.

:D:D

[hem057]

have already changed one of them, had to order in the valve plate assembly from copeland, don't understand why they don't just sell reeds and gaskets, oh hold on, yes I do understand, its the $, and maybe oem monopoly, ...
yes you are right about different model numbers, but this one has the reed that just slips into place, round type not eliptical, and not fastened to the plate

[jpsmith1cm]

Copeland used to sell a discus and gasket kit as a retrofit many years ago. I installed dozens of them.

Apparently, they no lonfer do so. Maybe it is because when there is damage to a reed, typically there is also damage to the discharge valve as well.

Of course, you can just slap it together, too.

Those 3Ds in the age that you are describing were pretty troublesome pumps. Be VERY cautious or ramp and pin wear. You can keep putting discs in a bad pump, but eventually, it's going to blow up.

[hem057]

thanks again, what did you mean by ramp and pin, I am assuming piston pin?

[jpsmith1cm]

The small cut out area where the discus valve "anchors" on either side.

If there is undercutting of the pin or the pin is loose or the ramp is worn, you have a bad compressor. It will cause the valve to move abnormally under load and break. This is why they have gone to the new delta reeds.

[powell]

Details Shmeetails................:rolleyes: Just slap in a reed - if it don't fit right, use a file.;)


MT,

A few years ago a supermarket tech in GA repaired a 3D laser reed compressor with a ..................................16 penny nail.

He actually filed it down with his Dremel and got it too work. That was the days before the Delta reed when the number 2 and 3 piston reed pins holes would wear out in an oval shape in a R404A application.

His last claim was that it was working great for over a year.

So my friend, you are correct!

[condenseddave]

Details Shmeetails................:rolleyes: Just slap in a reed - if it don't fit right, use a file.;)





:D

Too slow. Use an angle grinder and a vise.

[hem057]

so if he used a 16 penny nail, did he grind off and drill out the pin (I'm drawing this conclusion from the previous reference to the grinding and dremel use)?

[jpsmith1cm]

I'm guessing that the pin worked itself loose as they often do. He probably ground the nail to fit and JB welded it into place.