Posts Tagged ‘Electricity’

Stasis

Thursday, May 26th, 2016

We’re now in the water and slowly working on bringing the rest of our systems online.  Mostly the refrigeration. And silly me; I look for the easy way.

While both systems; the DC and the engine driven compressor, have lost refrigerant there is still some pressure in each. Unfortunately there was very little in the engine drive system and in hindsight I would have been wiser to simply evacuate it and recharge, but I was trying to keep things simple and figured I will just add R-134a till it all works right. Silly me.

I added, I removed. I hadn’t put my professional gauges on and was using a wonky car AC gauge to read only the Low Pressure side.  I ran the system. My sight glass showed bubbles; low refrigerant. Finally, I dug out the gauges and connected them. Whoa!  I was still way low. I added another can. Still low. I ran the system and I was still low. I added another can of refrigerant and watched  the sight glass.  Finally after the can was empty the sight glass foam disappeared. But the glass was still a bit foggy so I finished the refrigerant in the can. The system ran fine and the pressures looked good.

The following run time the HP went up to about 200 lbs. Real close. Oh-Oh!  Now I have appeared to have added too much refrigerant.  Luckily  the high pressure switch did not shut down the system and as the temperature on the plates cooled the system down everything looked good. The refrigeration compressor still made a bit of a grinding noise; like rust on the clutch, but over time the noise was diminishing so I felt it best to leave well enough alone. On a boat my philosophy is simple, “if it ain’t broke, don’t fix it”.  Right now it “ain’t broke”.

For the next couple of days we watched it. I now have enough refrigerant left to do a complete recharge but that is it.  I do have a new compressor to install if I need to.  That would mean dumping what is in the system, evacuating, and recharging the system with the end result that I have no more

Refrig Comprssor on Generator

Refrig Compressor on Generator

refrigerant for spares. Oh, I can buy refrigerant here; but not in the small easily stored cans, only in 10 kg containers. That makes storage a bit of an issue.  The other issue I faced is that of evacuating the system.

While I have a vacuum pump, it runs on 120v 60 cycle electricity. The electrical system here is 240 volts 50 cycle.  Which means I need to run the pump on ships power for about 3 hours and that is near the extent of my battery bank. My minimal solar will not keep up with the power drain of evacuation.  As I would be evacuating the system attached to  the generator I don’t want to use the generator to charge the batteries. Too many spinning belts too close to where I would be working.  Now, if push came to shove I could do it; but right now I’m being nudged and not shoved. Patience, I will be patient. I WILL BE PATIENT! 🙂

While working on the refrigeration systems we were talking to Simon (the activities directory – sort of for the Boatshed Restaurant).   Simon presented a couple of  events that we attended.  During the Fijian History lesson we brought up the idea of visiting some of the places he had mentioned.  He was all for creating a tour and we tentatively  cleared it with Adam the Marina manager. Simon set about scheduling transportation and accommodations for  8-10 cruisers.  W/ signed up 8, one ended up with an infection from of all things gardening. and so we were down one couple.  Six of us went on a unique tour from Vuda to Suva and back.

Go Slow
Sail Far
Stay Long