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Older Activity
16-08-2022,
07:41 PM
knighty
replied to a thread
IOT on HVAC-R
in
Computers & the Internet
ok... I know this is a spam thread.... but if anyone is interested in this stuff just ask some questions, I'm running an esp32 board (same family...
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1 replies | 422 view(s)
16-08-2022,
05:15 PM
knighty
started a thread
parallel scroll compressors - oil level?
in
Commercial
looking to swap out a dead compressor a scroll would be quieter which would be better two 7hp Copeland Scroll 7 ZB50KCE-TFD-551 would be a good...
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0 replies | 31 view(s)
16-08-2022,
12:40 PM
Tycho
replied to a thread
Pulling a vacuum
in
Fundamentals
false adding text to get over the minimum text requirement :)
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1 replies | 51 view(s)
16-08-2022,
10:47 AM
peristaltx
started a thread
Peristaltic pump driving me nuts
in
Air Conditioning
We have a two year old Daikin multi system that we've been generally very happy with - the external unit is a 3MXM52N and we have two internal units...
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0 replies | 51 view(s)
16-08-2022,
10:15 AM
DBCracker
started a thread
Pulling a vacuum
in
Fundamentals
On a big refrigeration system, when pulling a vacuum on the system, if you dont use a micron vacuum gauge you really dont have a clue if the system...
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1 replies | 51 view(s)
16-08-2022,
09:55 AM
DBCracker
started a thread
Superheat Technical Details
in
Technical Discussions
If the superheat is set to 10 deg F while the box temp is at 15 deg F, will the superheat increase or decrease or stay the same if the box setpoint...
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0 replies | 44 view(s)
14-08-2022,
12:16 PM
RANGER1
replied to a thread
Superheat reference
in
Fundamentals
To me it’s normal, just have to have oil temperature well above saturated conditions if screw or reciprocating type. Copeland suggest standard 5...
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4 replies | 155 view(s)
14-08-2022,
04:57 AM
lana
replied to a thread
Superheat reference
in
Fundamentals
Thanks for the replies. I don't have a problem in keeping the superheat in a normal range. For some refrigerants like R290 we need at least 20K...
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4 replies | 155 view(s)
14-08-2022,
03:03 AM
RANGER1
replied to a thread
system monotoring - what to monitor?
in
Controls
I would say faults, temperature alarms & dial out if temperature to high for “X” amount of time. Blast freezer fans can cook the meat if left on as...
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1 replies | 72 view(s)
13-08-2022,
08:17 PM
knighty
started a thread
system monotoring - what to monitor?
in
Controls
had a couple of freezer problems lately and lost a lot of stock I've set up a tiny esp32 computer with wifi (it's about the size of a thumb) and a...
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1 replies | 72 view(s)
13-08-2022,
02:58 PM
seanf
replied to a thread
Superheat reference
in
Fundamentals
What about using the compressor manufactures technical info for the particular compressor being used?
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4 replies | 155 view(s)
13-08-2022,
12:16 PM
RANGER1
replied to a thread
Superheat reference
in
Fundamentals
Lana, Please find some links, hopefully useful, but somehow think not. Can depend on what type of TX valve, as electronic very accurate. ...
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4 replies | 155 view(s)
13-08-2022,
11:27 AM
lana
started a thread
Superheat reference
in
Fundamentals
Hi there, A normal superheat at the evaporator outlet should be between 5 to 10K. Lower than 5K would result in liquid flood-back and higher value...
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4 replies | 155 view(s)
13-08-2022,
09:43 AM
frank
replied to a thread
Hitachi
in
Air Conditioning
Here you go...
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1 replies | 134 view(s)
12-08-2022,
09:08 PM
seanf
replied to a thread
Carrier Xarios 300 not work
in
Trouble Shooting
The pressure the road compressor makes will be affected by the ambient temperature, engine rpm and how much refrigerant is flowing into the...
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4 replies | 203 view(s)
12-08-2022,
09:02 PM
ronaldo9
started a thread
Hitachi
in
Air Conditioning
Hi Guys, Can anyone help me out with a service manual for a RAS - 30 FSN ? Set Free outdoor ? I used to have no problem finding this online but...
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1 replies | 134 view(s)
12-08-2022,
08:45 PM
Mavricks Choice
replied to a thread
Old MHI Wall control
in
Air Conditioning
Thanks Brian, that has been very helpful
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2 replies | 144 view(s)
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