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Filter drier replacement
October 29, 2010
8:20 am
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Steve Pooler
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dhillman said:

Hi Steve, went to the boat this weekend. Removed the condensing unit from the boat, and yes the valve is a 1/2 inch connection (NFL) but the copper line is 3/8". That was the confussion. The compressor is an AK8515E. Seems to be the original. The capacitor strap is painted blue so there is no model #. I already ordered the new valve and I am in the process of fabricating the bases at a shop here. I will test the compressor for suction pressure and RLA & LRA. I need to work also in the 2nd unit which is working ok now but is all rusted at the base and at the reciever. I also need 2 of the rubber-foot of the base. The capillary tube is a pressure sensor to cut-off the compressor @ high pressure? Yes there is a cap tube for that.

The idea of getting seawater all the way up at the Flybridge does not look too easy. There is a replacement compressor AK8515EXA, This compressor is OK to use...I noticed a new 16 with the XA extension to the model # the other day... but I've heard that there are some difference inside the marine compressor such as valves and other things. I thought that the model # was enough to garantee same specs. Anyway I hope the compressor is still working. I will try with a boost capacitor and maybe replace the starting capacitor. What about the voltage relay??? Does that need to be replaced at all. If this is the relay that activates then turn off the starting capacitor, could that be the reason for turning but not starting at all.

Also found that the breakers were 20 amps. I think I measured the amps in the past and found it was 16 amps for the complete unit, including fan and water pump. Anyway thanks for the help I will keep you posted in the future.

Darrel


Let us know...

Steve~

October 26, 2010
1:50 pm
dhillman
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Hi Steve, went to the boat this weekend. Removed the condensing unit from the boat, and yes the valve is a 1/2 inch connection (NFL) but the copper line is 3/8". That was the confussion. The compressor is an AK8515E. Seems to be the original. The capacitor strap is painted blue so there is no model #. I already ordered the new valve and I am in the process of fabricating the bases at a shop here. I will test the compressor for suction pressure and RLA & LRA. I need to work also in the 2nd unit which is working ok now but is all rusted at the base and at the reciever. I also need 2 of the rubber-foot of the base. The capillary tube is a pressure sensor to cut-off the compressor @ high pressure?

The idea of getting seawater all the way up at the Flybridge does not look too easy. There is a replacement compressor AK8515EXA, but I've heard that there are some difference inside the marine compressor such as valves and other things. I thought that the model # was enough to garantee same specs. Anyway I hope the compressor is still working. I will try with a boost capacitor and maybe replace the starting capacitor. What about the voltage relay??? Does that need to be replaced at all. If this is the relay that activates then turn off the starting capacitor, could that be the reason for turning but not starting at all.

Also found that the breakers were 20 amps. I think I measured the amps in the past and found it was 16 amps for the complete unit, including fan and water pump. Anyway thanks for the help I will keep you posted in the future.

Darrel

October 21, 2010
11:44 am
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Steve Pooler
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dhillman said:

Thank you Steve, I have an image of the plate on top of the compressor. I am not the original owner of the boat. As I said the unit in the front is 2 rows, the unit for the Saloon is 3 rows. This may be a replacement compressor. I did measure the OD of the copper tube at the suction valve and was 3/8″. I can try to send you the image of the plate. It is covered with layers of old paint, but that is what I can read in the big #'s. Maybe the condenser was added afterward???
Thank you for all your help.

Darrel


The correct compressor for a Cruisair 16 is a Tecumseh AK 8515 E….It is a OEM compressor that was built specifically for the Marine A/C trade and cannot be purchased from any standard refrigeration supply house…They try to offer substitutes but they never match up well in the system…It won't run correct pressures and thus performs poorly…It also won't last due to the incorrect pressures…The AK 8515E (Cruisair # R 3101-16) is only available from Cruisair/Marine Air dealers and last I looked it was around $660.00....

I still say to pull the cover off the electrical box…Look at the strap that holds the capacitors…It's in big letters written with a Sharpie…WFAH-16 or WFAH-12…You shouldn't even need glasses, and it will be staring you in the face  Wink

There is no telling what has been done to the A/C systems aboard a 1978 boat that has lived in PR…I'm thinking from what you have explained so far…You may be better off starting out with a new condensing unit….The Original EFL air handler never moved much air either, and parts are going to be increasingly hard to come by for that unit too…Especially in PR….

That system is what ?….At least 37 years old and owes no-one a thing…It's done it's work…

You may even want to consider one of the new "Turbo" self contained units installed where your air handler is now…The Turbo unit will out perform that old system by a long shot…and do it with like 27% less energy….

** you don't have permission to see this link **

You may save in the long run trying to keep/get a 37 year old system back to proper operation….

Steve~

October 21, 2010
11:19 am
dhillman
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Thank you Steve, I have an image of the plate on top of the compressor. I am not the original owner of the boat. As I said the unit in the front is 2 rows, the unit for the Saloon is 3 rows. This may be a replacement compressor. I did measure the OD of the copper tube at the suction valve and was 3/8". I can try to send you the image of the plate. It is covered with layers of old paint, but that is what I can read in the big #'s. Maybe the condenser was added afterward???
Thank you for all your help.

Darrel

October 21, 2010
8:41 am
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Steve Pooler
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We need to figure out what you have Darrel...Things are not adding up here...

A three row condenser should be a 16K unit, but 16K's didn't have 3/8" suction line connection...It was always (and still is ) 1/2" for the 16K.

The EFL blow-thru style air handlers with two motors were only built in 12K & 16K...A 38 Bertram of that vintage could have come with either...I just don't remember which.

The compressor # you give is not for a 12 or 16....It does not look like a good number to me...Part of it looks like a Tecumseh # and the other part looks like a Copeland #

Best way to figure out what the unit started life as is to read the model # on the electrical box cover...If that is not readable, then they also wrote the model on the strap that holds the capacitors in place inside that electrical box.

Also a 15 amp breaker is not big enough for a 12 or a 16...I might expect it to trip at startup...20 amp would be minimal for the 16 but 25 amp would be better...

Steve~

October 20, 2010
3:26 pm
dhillman
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Thank you Steve. I already contacted someone in PR and is selling me the valve and the receiver/strainer at 45.00 and 40.00 respectively. And thank you for correcting me about the WFAH16, that I just assumed it was. This unit which is for the saloon has the following compressor: AK 147 AT-009. Few weeks ago, when all this started (the leak), I added refrigerant and it lasted few days only, until last time that I visually identified the leak. The compressor now won't start.

when you switch on the compressor, it starts with the typical sound of compression but in just a second or less the 15 amp breaker tripps. Not sure if it is locked. I believe that some of the oil had been lost with the leak. I will try a jump start but I may need to replace the compressor. If that is the case, which number is the replacement for this compressor. The system is 115VAC, the condenser tube is a 3 row coil and the evap is a twin fan air handler (I think is EFL). I have an ak111at004??? Not sure if that is the right # but I bought it to replace the other compressor (the V-berth and port room A/C) which is a 2 row coil condenser tube. Is there a technique to test the compressor?? How many ounces should I add of oil???

Any information would be greatly appreciated.

Thanks in advance.

Darrel

October 20, 2010
9:35 am
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Steve Pooler
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OOps…Missed that part…If your suction line is 3/8″ instead of 1/2″ then the WFAH unit is smaller than 16,000 like you mentioned earlier…

The 3/8″ valve is part # 3080106 and retails for $40…Why it's 5 bucks more is anybody's guess…They use the same one for units from 5 to 12K….The receiver/strainer is the same for units up thru 16K.

Steve~

October 20, 2010
7:08 am
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Steve Pooler
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Hi Darrel~

The main purpose of the Receiver/Strainer is as a liquid tank to help ensure the solid liquid is present at the capilary tube (outlet tube extends into the bottom of the can)

It also makes the system less charge critical by holding an extra volume of refrigerant...Without it you would definitely be better off charging by the superheat method.

The suction side service valve is Cruisair part # 3090508, and like the Receiver it retails for $35.

Unfortunately my distributor won't ship outside of the lower 48 states, so unless you have a friend or address in one of those states I can't help much more than to offer what I found (using the dealer locator) within 25 miles of your postal code.

Hope that helps,

Steve~ 

Edit:

I have tried (and retyped this message) 3 times to copy & paste what the dealer locator found, but I keep getting a too many links error then it erases my post...Like I said though...go to the Dealer locator I linked above, enter your postal code & 25 miles...You should come up with at least 4 dealers...If you have trouble with that I can e-mail them to you...Just PM me your address, or send me a mail thru the Contact Steve link on the top of any page here...

October 19, 2010
12:59 pm
dhillman
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Thank you steve. What is exactly the purpose of this strainer? Why it is not a regular part in a domestic condensing unit of split systems? I am also in need of the gas side service valve which is rusted and locked in the open position. If you can help me with those other parts, I will be very gratefull. I live in San Juan, PR 00918. Can you quote for those parts? The gas line is 3/8 of an inch.
Thank you again for your help.

Darrel

October 19, 2010
6:23 am
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Steve Pooler
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Hi Darrel~

The can you mention on your WFAH 16 is a commonly replaced part...They do tend to rust out at the bottom, and most of the time it's due to a leaking hose clamp above that allows seawater to drip down on the unit's base plate (right around that can & the liquid line service valve)

It's not really considered a drier, but it is a receiver/strainer with a Cruisair part # of 3150400 and a retail price of $35...I can have one sent to you, but you can likely get one from any Cruisair dealer in your area...below is a link to a dealer locator....

** you don't have permission to see this link **

** you don't have permission to see this link **Be sure to put a check in the box at the top of the page next to Cruisair.

Let us know how it go's...

Steve~ 

October 18, 2010
5:01 pm
dhillman
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Hello friends. This is my first post at this great forum. I have a Bertram 38 from 1978. One of the A/C units, I believe is a Cruisair WFAH16 has a leak at what I believe is the filter/drier. This part is at the exit of the line out of the condenser tube and before the liquid line valve. The part is made of steel and is all rusted at the bottom. The line is 1/4 inch. I am trying to get this part online but I have not been able to get an image to make sure is the one I need.

Can someone tell me if this is a filter/drier and where can I get this? Can I replace this instead with an in-line filter drier? Any comments will be appreciated.

I am not a tech but I have worked with the A/C system before.

Thanks in advance.

Darrel