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Polar Opposite · 23-10-2018, 12:39

Up for grabs: A brand-new, never installed, never run Crosby engine driven refrigeration system. It was purchased from Crosby in 1984 for a project boat that was never completed. It is a very large system, and not suitable for my small cruiser. It is complete with all manuals, receipts, parts lists, icebox design guide, and a wealth of notes and references from the original purchaser. It was designed for up to a 20 cubic foot freezer, and includes the following:

-York compressor and double idler pulley

-water-cooled condenser/dryer with 12v pump

-two Crosby 16x24 freezer cold plates
-Thermal Expansion Valve (TXV) and temperature control
-25 feet of refrigerant supply and return line, all couplers and fittings

-Books, manuals and notes

This system used 3 pounds of R12 refrigerant. Old stocks of R12 are available on eBay, or the system can be converted to R134 (consult a tech). It is an extremely simple system, designed to freeze both cold plates in an hour of run time. There are no electronics; the only power consumption is for the compressor clutch and the cooling pump, which only operate when the engine is run. The dryer cartridge should be swapped out upon installation. The most complicated part of the assembly is fabricating the compressor mount, which will vary according to your engine configuration. Detailed notes and drawings in the manuals cover this topic.

This system is VERY LARGE and HEAVY, around 200 pounds. I don't think shipping is practical, but I will drop it off at the UPS store for boxing and shipping if a buyer desires. Otherwise, plan to pick it up in Hernando Beach, FL 34607, about an hour north of Tampa.

john61ct · 23-10-2018, 12:47

Any idea of the actual HP / torque required?

Polar Opposite · 23-10-2018, 13:46

Quote:

Originally Posted by john61ct

Any idea of the actual HP / torque required?

According to the manual, as much as 5hp at full loading. Crosby recommended two v-belts with 135 degrees of contact, and that the pulleys be sized to drive the compressor at 1000-1250 rpm when the engine was at cruising RPM.

York compressors were power-hungry but bulletproof, and can be serviced at a truck stop or user-serviced if you're handy. Modern Sanden compressors use far less power, but are less user-friendly. Basically throw-away.

Polar Opposite · 23-10-2018, 13:50

CORRECTION TO ORIGINAL POST:

The cold plates are 16x16, not 16x24. They are 3" thick, weigh 35 pounds each, and include a mounting flange.

Dougtiff · 24-10-2018, 09:53

There will be problems using 134A, instead of R12, as the oil in the compressor is different, even after changing the oil, there could be issues with O rings, ect.

junkmanii · 24-10-2018, 11:17

Hi, I’m currently in Tampa and might be interested in the system. Could you send me contact information to junkmanii@embarqmail.com

Thanks

Polar Opposite · 24-10-2018, 15:34

Quote:

Originally Posted by Dougtiff

There will be problems using 134A, instead of R12, as the oil in the compressor is different, even after changing the oil, there could be issues with O rings, ect.

Another option is to use a product called Freeze12, which is a direct replacement for R12 that is compatible with the mineral oil lubricant in these compressors.

Personally, I’d stick with R12. It’s colder, it’s available (thanks to mandatory recovery from old systems) and it works fine with this style of machine. The Freeze 12 is a great option too. R134 would be my third choice for the reasons you mention, but because the system is empty, now would be the time to decide.

**a64pilot** · 24-10-2018, 16:05

Go with the R12 or convert.
There were literally millions of conversions, it’s a solved problem, but not done much anymore, cause of course they have all been converted.
Freeze 12is a gas mix, some gasses are very light and leak easily, then the Freeze 12 becomes something else as the lighter gasses leak ,something else doesn’t cool very well