Forum: Geothermal & Heat Pumps
03-23-14, 05:09 AM
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Replies: 2
Views: 3,368
choosing a vacuum pump
Hi all,
Looking for recommendations on a vacuum pump to replace my 25-30 year old single stage which I bought second hand. I will be working with auto AC and mini splits. current mini split I am...
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Forum: Geothermal & Heat Pumps
03-23-14, 05:00 AM
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Replies: 13
Views: 20,258
got my micron gauge and hooked it up, but cant...
got my micron gauge and hooked it up, but cant get a vacuum lower than 5000-1500 microns...did a blank off test to test my vac pump performance and could not get below 1500 microns. My single stage...
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Forum: Geothermal & Heat Pumps
03-19-14, 06:32 PM
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Replies: 13
Views: 20,258
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Forum: Geothermal & Heat Pumps
03-19-14, 05:21 AM
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Replies: 13
Views: 20,258
Hi all,
I now have my high pressure regulator...
Hi all,
I now have my high pressure regulator and pressurised the lines and indoor unit (its a new mini split with the charge in the outdoor unit and the service valves are shut) to 200 psi with...
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Forum: Geothermal & Heat Pumps
03-12-14, 10:35 PM
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Replies: 13
Views: 20,258
Hello jeff5may,
The $50 micron gauge - where...
Hello jeff5may,
The $50 micron gauge - where could I get one of those? The best price I have seen is just under $140 USD including postage to Australia - 'Fieldpiece' brand which you plug a digital...
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Forum: Geothermal & Heat Pumps
03-04-14, 08:56 PM
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Replies: 13
Views: 20,258
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Forum: Geothermal & Heat Pumps
02-17-14, 04:26 PM
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Replies: 11
Views: 11,467
Hi all, just to clarify.... I originally put an...
Hi all, just to clarify.... I originally put an R410a mini split on my caravan (trailer) and tried very hard to source flexible refrigerant lines as I anticipated there would be some movement between...
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Forum: Geothermal & Heat Pumps
02-17-14, 03:36 AM
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Replies: 11
Views: 11,467
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Forum: Geothermal & Heat Pumps
02-16-14, 04:56 PM
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Replies: 11
Views: 11,467
Thanks for the tip!
I also note that some...
Thanks for the tip!
I also note that some people have used it to regas their old R12 auto systems as well,
but if it gets out and sprays on your exhaust manifold I have read it can be rather...
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Forum: Geothermal & Heat Pumps
02-12-14, 08:20 PM
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Replies: 11
Views: 11,467
Flushing lines on a mini split - R410a to R22
Hi all,
In a previous post I was experimenting with propane in a R410 mini split which had lost its gas due to a pipe fracture. To cut a long story short, it was not the most efficient and because...
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Forum: Geothermal & Heat Pumps
01-01-14, 06:13 PM
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Replies: 32
Views: 25,196
Thats the unit........
So on the heating cycle,...
Thats the unit........
So on the heating cycle, what i was reading on the gauge is to be expected.
So much to learn....so little time!
Will post some more detailed information on my A/C adventures...
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Forum: Geothermal & Heat Pumps
12-29-13, 04:53 PM
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Replies: 32
Views: 25,196
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Forum: Geothermal & Heat Pumps
12-29-13, 06:44 AM
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Replies: 32
Views: 25,196
Another quick note. This unit was fitted to a...
Another quick note. This unit was fitted to a caravan (trailer) and I tried very hard to find a high pressure fexilble hose solution and could not. went on my trip in july - the pipes failed and out...
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Forum: Geothermal & Heat Pumps
12-29-13, 06:34 AM
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Replies: 32
Views: 25,196
Quick reply as I spent half an hour of typing,...
Quick reply as I spent half an hour of typing, went to post & all the text go lost...
frusrating. anyhow, it works on cool (yeehah!) but on heat the suction pressure is very high at 150+ psi - not...
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Forum: Geothermal & Heat Pumps
12-26-13, 06:42 AM
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Replies: 0
Views: 2,895
Australian experiences with filtering BBQ propane?
Hi all,
juat wondeing if any aussies out there have experience of filtering BBQ propane?
I am attempting to re charge a R410a 2.4kw mini split with propane as the original charge was lost due to a...
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Forum: Geothermal & Heat Pumps
12-26-13, 04:37 AM
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Replies: 32
Views: 25,196
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Forum: Geothermal & Heat Pumps
12-23-13, 04:41 PM
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Replies: 32
Views: 25,196
Hi all, thanks for your replies.
A couple of...
Hi all, thanks for your replies.
A couple of questions -
To get the system working I know it is better, but can I still get my charge right without having a schrader valve in the high side?
When...
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Forum: Geothermal & Heat Pumps
12-23-13, 04:27 PM
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Replies: 32
Views: 25,196
I did use BBQ propane which according to the...
I did use BBQ propane which according to the suppliers data sheet is more than 95-99% propane and 1-5% ethane. I passed it through a filter drier first to remove as much moisture as possible. Also...
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Forum: Geothermal & Heat Pumps
12-22-13, 10:39 PM
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Replies: 32
Views: 25,196
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