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mather
17-06-2007, 05:38 PM
I'm really stuck on a question and wondered if anyone has the knowledge to help me??:confused:

"List 5 indicators used to confirm that a system is correctly charged?"

Much thanks.
lana
17-06-2007, 06:07 PM
Hi mather and welcome,

In my opinion they are as follows :

1- LP = suction pressure
2- HP = discharge pressure
3- SH = super heat
4- SC = sub-cooling
5- Bubbles in the sight glass

Cheers
The Viking
17-06-2007, 06:13 PM
Ohh, cheating for a test are we??

-Sight-glass
-Sub cooling
-Liquid receiver's liquid level
The above are the best I can think of at the moment, below are secondary ones.
-Super heat
-Discharge temperature
-Delta T between discharge and liquid
-Compressor running current (most noticeable on inverter driven compressors in VRV/VRF systems)
-Delta T across evaporator
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-
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mather
17-06-2007, 08:20 PM
cheers guys... :)
marc5180
30-06-2007, 01:40 PM
id list them as
Superheat
Subcooling
High Pressure
Low Pressure
Air temperatures
Pipe temperatures
Brian_UK
30-06-2007, 04:40 PM
You could also add

Correct charge weight.

Customer satisfaction ;)
Gary
01-07-2007, 05:59 AM
Compressor running
Condenser delta-T
Evaporator delta-T
Subcooling
Superheat
airconadam
01-07-2007, 10:11 AM
ishould of joined this site when i was on my college course hehe;)
Gary
02-07-2007, 03:22 PM
BTW, you are apparently being taught backwards troubleshooting. Out there in the real world you are not given the problem and asked the symptoms, you are given the symptoms and asked the problem.
Paulajayne
03-07-2007, 08:58 AM
:D Acheiving temps ??? :D

Paula
setrad7791
03-07-2007, 12:11 PM
Well Said Gary!
superswill
04-07-2007, 06:54 PM
customer offers you a drink?

never happen when its not working
Gary
24-07-2007, 04:27 PM
BTW, you are apparently being taught backwards troubleshooting. Out there in the real world you are not given the problem and asked the symptoms, you are given the symptoms and asked the problem.

This is more important than many would believe. People form habits in school which are extremely difficult to change. They go through life troubleshooting backwards, i.e. suspecting what the problem might be and then seeing if the symptoms match, rather than checking the symptoms and then narrowing down to the problem(s).