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The 90-150 (EAB-0150) is a MT12/LT502 compressor as I stated but the LT502 use is an alternative application for which I cannot find any btuh specs.

Based on it's CFH and the S.W.A.G theory I...

Is this a Copeland semi-hermetic compressor? If so it is from the 60's with that part number 90-150. The current compressor number is an EAB?-015A-??? which is a MT12 or LT502 compressor.

I posted this today in the memorial section. Marvin has passed on.

http://hvac-talk.com/vbb/showthread.php?1266331-Marvin-Greene-has-passed

Marvin Greene "Marvin" passed away last night here in Las Vegas.

At this time I do not know the cause of death.

I always enjoyed talking with him on the counter or phone. He was an excellent...

This is a true statement because the air is not blown directly on unwrapped produce or flowers. But, a low velocity evap is about twice the cost versus a regular evap. This is the reason (as one...

There's just one little problem, the ERF2-0310-CAB is a H22/M502 compressor. It's not rated for R12.:whistle:

The model of the box doesn't help. Give us the compressor model number and the evaporator model number.

After a few years the liquid line will leak due to it rubbing together. I repaired quite a few of these in the 80's in Atlanta.

Ah, it uses the "Moduload" type unloader. It unloads based on compression ratio. It will be easier for you to understand if you read the AE bulletin from Copeland.

Here's the link
...

Is it a single head compressor, 3D model?

Compressor model numbers are required for us to help you.:yes:

Glad I could help.

It is very similar to the LAHA-031A-TAC

I doubt there is no water regulating vlaves, unless someone screwed up. It's not about EWT, it's about head pressure.

K and E bodies

Hey! That aint duct tape!

It's a dry heat out here in the desert.

Air in the system, low side leak.:.02:

I agree with you. I don't like to go less on the BtuH unless I know the design of the system.

Here's another possibility:

Copeland has consolidated many of their CR models and the CR26 does cross to a CR24. The difference is about a nominal 2000 (8%) BtuH loss in capacity.

If the...

My condolences to you Robin.

My mother passed about 6 years ago from Alzheimer’s. I remember sitting with her near the end while we watched TV. We were watching a music channel where we played...

He is incorrect. You want to measure the liquid line pressure/temp to get subcooling. The term "discharge pressure (compressor hot gas line)" is sometimes referred to as the liquid line pressure in...

uni,

As Mikey stated, get the model and serial number of the compressor. Measure the condenser coil, get the FPI, rows and tube size. Also state the number of fans and get any numbers at all...

Miami has a good Copeland supply house, just find the seasoned help who learned by looking in catalogs, not the web.

Or come see me.

OK,

Let's assume the original compressor was a:

LAC1-0310-CAB or LACA-031A-CAB
MT12
LT502

It does cross to a LACB-032E-CAB

Craze,

First, you should use paragraphs when writing a post this long. It's difficult to read and comprehend the way it's written.

The LAL does not cross to a LAH. It is still a current model...