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Old 28-10-2020, 12:43   #1
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Dometic SQUF18CK 220V AC unit

Can anyone explain how this factory installed Dometic Cruisair AC unit would corrode beyond repair in under 100 hours of use? This is on 2016 Riviera 445 that has done under 250 engine hours, 200 genset hours and the AC unit was seldom used on shore power.
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Old 28-10-2020, 18:23   #2
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Re: Dometic SQUF18CK 220V AC unit

At the risk of sounding sarcastic, it rusted because it got wet. Even if you only used it once in four years. Once the rust started, it picked up enough moisture from the air to continue. Then you didnít catch it soon enough.

On the other hand, you might well ask why they built a marine air conditioner with steel parts. But youíll probably get the same answer that I got when I asked why the mild steel frame on my scuba diving compressor rusted away. I didnít catch it either. After all, the frame was suitable for a basement in Chicago on a dry day. Or the aluminum base on my refrigerator compressor after a "minor" leak in the cockpit. Or the exhaust mixing elbow on my engine after 300 hours. Or the steel screws holding the "marine water pump" together. Or my marine stove which is all SS on the outside, while whatís left of the inside isnít. Or ....

Manufacturers cut corners, or just donít really pay attention to details. Stuff corrodes whether you use it or not. Scraping, sanding and painting are a continual job. I just figure it keeps me from breakfasting in the local bar.
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Old 21-11-2020, 13:09   #3
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Re: Dometic SQUF18CK 220V AC unit

You are correct but there are Consumer laws about durability here.
If a product doesn't meet a reasonable life if used as specified the law says it must be repaired or replaced by the manufacturer. I'll try that angle with Dometic.
Wish me luck!
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Old 21-11-2020, 17:00   #4
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Re: Dometic SQUF18CK 220V AC unit

Quote:
Originally Posted by Garthh View Post
You are correct but there are Consumer laws about durability here.
If a product doesn't meet a reasonable life if used as specified the law says it must be repaired or replaced by the manufacturer. I'll try that angle with Dometic.
Wish me luck!


The only way the compressor can rust at the base like you show is through inadequate condensate drainage. This isnít dometics problem. Itís the installers and the individual who ran the unit without checking the condensate levels occasionally.
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