Cruisair all-in-one air con not cooling

[jfm]

Dang. That kills the idea of transplanting my spare compressor which as you can see from pics I sent is r410a
Fingers crossed you can get the spare one fast

Last month I fitted a spare freshwater pump. Idea is that if the main pump fails, no-one can even flush a loo, so the party's over. Now I can flip some valves and electrical switches and use pump #2 - take literally 30 seconds. Airco is the same isn't it? you should have two airco units, fitted side by side, with a 15 min swap over routine to deploy #2 when #1 fails.

IF you believe that you should order the £730 part, not bother with the £70, and order the £2850 item, which will come asap and you will be able to use the boat. The £730 job can wait.

 

[jimmy_the_builder]

Dang. That kills the idea of transplanting my spare compressor which as you can see from pics I sent is r410a
Fingers crossed you can get the spare one fast

Last month I fitted a spare freshwater pump. Idea is that if the main pump fails, no-one can even flush a loo, so the party's over. Now I can flip some valves and electrical switches and use pump #2 - take literally 30 seconds. Airco is the same isn't it? you should have two airco units, fitted side by side, with a 15 min swap over routine to deploy #2 when #1 fails.

IF you believe that you should order the £730 part, not bother with the £70, and order the £2850 item, which will come asap and you will be able to use the boat. The £730 job can wait.

I see your logic - but apart from anything else I physically don't have the space for another ac unit unfortunately. I think my plan is to order the replacement compressor only, unavoidably miss another couple of weeks of the summer, and put the notional £2k (ie replacement unit less replacement compressor) into the new boat fund. And next time around buy a boat with a multi-chiller split system.

 

[superheat6k]

Thanks for those thoughts and suggestions. There are no replacement compressors in Europe so we're having to order one in from the US. Currently looking like first week of August; still working on it.

Can you let me have the model and I will see what I can find. Tecumseh are also sold in Europe under the L'Unite Hermetique brand, with a variation on the models. Kooltech is a main agent in the UK for Tecumseh, HRP for L'Unite.

To use R410A would mean effectively a whole new system. A conversion is simply not feasible.

 

[jimmy_the_builder]

Can you let me have the model and I will see what I can find. Tecumseh are also sold in Europe under the L'Unite Hermetique brand, with a variation on the models. Kooltech is a main agent in the UK for Tecumseh, HRP for L'Unite.

To use R410A would mean effectively a whole new system. A conversion is simply not feasible.

Thanks T. Cruisair part number is 239402036. Tecumseh model number is RKA5515EXC and it is additionally marked with RK222JT-009-A4. Any good?

 

[jfm]

I see your logic - but apart from anything else I physically don't have the space for another ac unit unfortunately. I think my plan is to order the replacement compressor only, unavoidably miss another couple of weeks of the summer, and put the notional £2k (ie replacement unit less replacement compressor) into the new boat fund. And next time around buy a boat with a multi-chiller split system.

Yup, I see all your logic too. Bumma, but ok if you get nearly all of August on board. If you're going to miss too much of this year I have the following suggestions some of which are scraping the bottom of the barrel right down to bare wood:
1. Leave the fridge door open. I'll get m'coat.
2. Borrow a couple of fans from me (I have 4 of those dyson polo mint jobs on board, the ones with no blades)
3. At night only, cos in the day you don't need airco, berth Vega on Match's std bow where as you know I have loads of space, and let's buy a length of airco 6 inch hose, £10 off ebay, jubilee clip it to my starboard cabin airco unit, lead it out thru porthole, and blast cold air thru your foredeck hatch all night
4. Sleep on Match when I'm not there and day boat in Vega. Match is mostly empty all midweek for the fortnight commencing 1st august then is off to elba cruising 13 august

 

[superheat6k]

Thanks T. Cruisair part number is 239402036. Tecumseh model number is RKA5515EXC and it is additionally marked with RK222JT-009-A4. Any good?

Can't find the Tecumseh in the UK, but this is similar capacity and a lot less cash. Once installed the system doesn't know what is pumping the refrigerant. Your would need to check the drawing to check it will fit the space.

As a side note the Dometic Unit label states 16,000 BTU/hr but the Tecumseh is rated at 12,000 BTU/hr (~ 3.5 kW), although this is possibly the heat pump duty, when the compressor input is added to the output cooling capacity.

As it is rated for R22 it will be just fine on R417A, a direct replacement for R22.

Just check it is single phase 240v, as the technical detail is a bit vague. The Spec below says it is 240v 50 hz RH207'V'HAT.

http://www.orionairsales.co.uk/mitsubishi-rh207vhat-refrigeration-compressor-35-kw-207-cc-2058-p.asp

Full spec here ...

http://www.siamcompressor.com/eng/news/SCI_RotaryCompressor.pdf

 

[Zing]

I finally managed to get Phil from Penguin Marine to have a look at the aircon last Friday. He diagnosed a faulty start relay, and ordered a replacement. This turned up this morning and he fitted it and tried again .. and guess what, still not working. He then tried hot-wiring the compressor in much the way recommended by S6K above (using a 175mfd cap, on the advice of Dometic, apparently). Nothing. So the eventual diagnosis is seized compressor. He's currently trying to source a replacement. In the meantime we have cancelled our flights for the coming weekend because a T40 without aircon in SoF in August ain't much fun. Disappointing (and expensive, on all fronts).

Have you kicked it yet?

Scroll compressors have tiny clearances and maybe something has got stuck in the gap, or maybe it's a tiny bit out of alignment. Anyway, it has been given the death sentence, so you can't make it worse. My guess is you know how to use a hammer. Give it a go as it tries to fire up, or maybe a rap with an impact driver.

 

[jimmy_the_builder]

Have you kicked it yet?

Scroll compressors have tiny clearances and maybe something has got stuck in the gap, or maybe it's a tiny bit out of alignment. Anyway, it has been given the death sentence, so you can't make it worse. My guess is you know how to use a hammer. Give it a go as it tries to fire up, or maybe a rap with an impact driver.

Yep, a reasonable suggestion and a hammer has been tried. No joy.

 

[jimmy_the_builder]

Can't find the Tecumseh in the UK, but this is similar capacity and a lot less cash. Once installed the system doesn't know what is pumping the refrigerant. Your would need to check the drawing to check it will fit the space.

As a side note the Dometic Unit label states 16,000 BTU/hr but the Tecumseh is rated at 12,000 BTU/hr (~ 3.5 kW), although this is possibly the heat pump duty, when the compressor input is added to the output cooling capacity.

As it is rated for R22 it will be just fine on R417A, a direct replacement for R22.

Just check it is single phase 240v, as the technical detail is a bit vague. The Spec below says it is 240v 50 hz RH207'V'HAT.

http://www.orionairsales.co.uk/mitsubishi-rh207vhat-refrigeration-compressor-35-kw-207-cc-2058-p.asp

Full spec here ...

http://www.siamcompressor.com/eng/news/SCI_RotaryCompressor.pdf

Thanks for this suggestion but I've decided to order the OE part - although the compressor you suggest here is a bit cheaper, the installation cost is inevitably going to be a bit higher so it's swings and roundabouts. Thanks again for the idea though.

 

[jimmy_the_builder]

Yup, I see all your logic too. Bumma, but ok if you get nearly all of August on board. If you're going to miss too much of this year I have the following suggestions some of which are scraping the bottom of the barrel right down to bare wood:
1. Leave the fridge door open. I'll get m'coat.
2. Borrow a couple of fans from me (I have 4 of those dyson polo mint jobs on board, the ones with no blades)
3. At night only, cos in the day you don't need airco, berth Vega on Match's std bow where as you know I have loads of space, and let's buy a length of airco 6 inch hose, £10 off ebay, jubilee clip it to my starboard cabin airco unit, lead it out thru porthole, and blast cold air thru your foredeck hatch all night
4. Sleep on Match when I'm not there and day boat in Vega. Match is mostly empty all midweek for the fortnight commencing 1st august then is off to elba cruising 13 august

Thanks for all this. After the success of your Dyson fan the other week, I trundled up to Carrefour the other day and bought a floor standing fan which made a big difference - so I am all fanned up for now. Thanks for all those other suggestions, very generous of you and I'm grateful for the offers. I've just asked Matt Fry to get the compressor ordered in from the US, and if the timing is right then it'll be in the UK on 2 August 2016 and with me on 3 August 2016 and I will be on a plane with it at the very first opportunity thereafter. We currently have flights booked for the weekend of 6/7 August 2016 so my goal here is to get the new unit installed and working in time for that weekend. If it's still not working at that point then I'll probably follow Mcanderson's suggestion of a free-standing unit from the supermarket.

 

[Deleted User YDKXO]

Yep, a reasonable suggestion and a hammer has been tried. No joy.

Well hit it harder then. You know you want to and it deserves it anyway

 

[jfm]

 

[Adethefridge]

Assuming the compressor is siezed ie locked rota but both start and run winding are healthy
You could try Running the compressor in reverse for a very short time frame 20 / 30 seconds, just to see if you can free the rota, low success rate as even it it does free there's nothing to say it won't sieze again at a later date but may be worth a try
You just need to change the polarity of one of the winding via the capacitors
If the compressor runs switch off , wire correctly and just may be the compressor will run untill a the new comp arrives ??

 

[jimmy_the_builder]

Assuming the compressor is siezed ie locked rota but both start and run winding are healthy
You could try Running the compressor in reverse for a very short time frame 20 / 30 seconds, just to see if you can free the rota, low success rate as even it it does free there's nothing to say it won't sieze again at a later date but may be worth a try
You just need to change the polarity of one of the winding via the capacitors
If the compressor runs switch off , wire correctly and just may be the compressor will run untill a the new comp arrives ??

New compressor is ordered and paid for.

I think what we'll do is that when there's a spare moment, I'll take the old one up to jfm's workshop/chandlery and we'll have a go at hot-wiring it and belting it with increasingly big hammers, just to see what happens. Bl88dy thing

 

[rafiki_]

 

[superheat6k]

Assuming the compressor is siezed ie locked rota but both start and run winding are healthy
You could try Running the compressor in reverse for a very short time frame 20 / 30 seconds, just to see if you can free the rota, low success rate as even it it does free there's nothing to say it won't sieze again at a later date but may be worth a try
You just need to change the polarity of one of the winding via the capacitors
If the compressor runs switch off , wire correctly and just may be the compressor will run untill a the new comp arrives ??

It is not possible to run a 3 connection single phase motor backwards. To do this you would have to reverse the connections on the run winding, but one end is terminated inside the compressor at the common terminal where it links with the start winding.

 

[jimmy_the_builder]

Another glacial step forward... the replacement compressor arrived in the UK yesterday afternoon, so I rode 100m on my motorcycle to Dometic UK* this afternoon, strapped the new unit to the back of the bike and rode another 100m to Heathrow. I'm currently waiting to push back on the BA0356, and hopefully the compressor is in the hold. Penguin Marine are due on the boat at 0930 tomorrow.

* Dometic UK: properly the hardest place to find, ever (I may be exaggerating). They might consider putting a sign on the gate perhaps, or even having a postcode that was at least approximately close to their office...

 

[jfm]

Dedication!
When are you flying from Nice back to UK? (I have a reason for asking...)

 

[jimmy_the_builder]

Dedication!
When are you flying from Nice back to UK? (I have a reason for asking...)

Currently booked on the 1835 tomorrow evening, but if for whatever reason it doesn't work out with Penguin in the morning my plan is to come back during the afternoon instead, I think there's a flight at 1535. Give me a shout if I can help with anything.

 

[jfm]

Currently booked on the 1835 tomorrow evening, but if for whatever reason it doesn't work out with Penguin in the morning my plan is to come back during the afternoon instead, I think there's a flight at 1535. Give me a shout if I can help with anything.

OK. I'm arriving Thursday evening v late (on the BA that lands T1 midnight) so if you are not on the uber scooter and want to take my VW from the port and leave it at T1, thereby saving you and me both a taxi, then please do and I'll get jenny to give you the VW key tmrw.
But if you are already on uber scooter mode of transport ignore all this!
Good luck w airco anyway