I need to know how to properly use this equipment like pictured I know the basics how to hook it up how to read it how to add or lose refrigerent. But I need to know what exactly the numbers should read and what they mean.




Please only reply if you have ussed this in your shop before or know what Im doing. If your gonna offer a guess because you've something similer I also WELCOME your opinion but please let me know.

Im basicly looking for a How To before I use this and damage something on a car. I also have the evacuator pump and understand its function as well.

I just need a how to on how to use it in a nutshell.

Thanks in advance!!!

Edit:

Say its about 90' out with low humidity what would be a good measurement of how the low and high side read and why you came to that.

 

bump before I goto work,

 

There is a high side and a low side. I am not sure what the spec pressures are for Honda a/c's. The plugs will only fit in the appropriate a/c plug on the condensor. YOu will hook up the plugs and read the guages for the high and low side.
The high side guage will read when the comp kicks in and the low side reads when comp kicks out.

What are you trying to do, recharge the system? There is a simpler hose from Interdynamics that reads low/charge/ overfilled. Its just one hose u hook up the low side of the a/c.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nocturnaldragon &raquo;</TD></TR><TR><TD CLASS="quote">I need to know how to properly use this equipment like pictured I know the basics how to hook it up how to read it how to add or lose refrigerent. But I need to know what exactly the numbers should read and what they mean.

Please only reply if you have ussed this in your shop before or know what Im doing. If your gonna offer a guess because you've something similer I also WELCOME your opinion but please let me know.

Im basicly looking for a How To before I use this and damage something on a car. I also have the evacuator pump and understand its function as well.

I just need a how to on how to use it in a nutshell.

Thanks in advance!!!

Edit:

Say its about 90' out with low humidity what would be a good measurement of how the low and high side read and why you came to that.</TD></TR></TABLE>

^^ Well i've worked in the a/c field for about 5 yrs now.......but that is residential/commerical work, NOT automotive . And there is a difference from what i have heard on how to properly charge the system.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 97civicdx &raquo;</TD></TR><TR><TD CLASS="quote">There is a high side and a low side. I am not sure what the spec pressures are for Honda a/c's. The plugs will only fit in the appropriate a/c plug on the condensor. YOu will hook up the plugs and read the guages for the high and low side.
The high side guage will read when the comp kicks in and the low side reads when comp kicks out.
</TD></TR></TABLE>

^^ Never heard of that.....I do know from workin on residential/comm. A/C systems that if the comp. is running you will read a suction (low side-Blue side of the guage) press. and a liquid (high side-Red side of the gauge) press. ........but like i said i have never worked on automotive a/c before. So but the comp. should be running in order to feed the system with freon, but if there is no charge on the system to begin w/ then i would recommend pulling a vacuum on it, and then re-charge the system.

^^Hope this helps out a little


Modified by JohnnysEG at 2:30 PM 8/6/2005

 

What i would recommend doing is first just check the freon press. Crank the car and turn the a/c on.......make sure u hear the comp. kick on. then apply the gauges......the blue side gauge should go to the bigger of the two lines......and the red side gauge goes to the smaller of the two lines. Read the pressures and then determine what could be the problem(s).

Is the comp. even coming on ????

Does your a/c blow, but just not cold ???

Need a little more info on the symtoms (sp?) of what your a/c is doing.......

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nocturnaldragon &raquo;</TD></TR><TR><TD CLASS="quote">I need to know how to properly use this equipment like pictured I know the basics how to hook it up how to read it how to add or lose refrigerent. But I need to know what exactly the numbers should read and what they mean.




Please only reply if you have ussed this in your shop before or know what Im doing. If your gonna offer a guess because you've something similer I also WELCOME your opinion but please let me know.

Im basicly looking for a How To before I use this and damage something on a car. I also have the evacuator pump and understand its function as well.

I just need a how to on how to use it in a nutshell.

Thanks in advance!!!

Edit:

Say its about 90' out with low humidity what would be a good measurement of how the low and high side read and why you came to that.</TD></TR></TABLE>

when the car is off, high side and low side will always be equal.

what are the problems with your a/c? not blowing cold? compressor not kicking in?
need more info

 

ok here is the deal. blue is low side - small fitting. red is high side - large fitting. first turn on your ac. does the compressor come on? does the ac fan come on? go over the basics. if all of that checks out hook up your gauges. blue to small red to large. close the valve on the high (red) side. open the valve on the low (blue) side. start the car and crank up the ac on high and recirculate. then look at your gauges. you basically want about 30 to 40 on the low side and no more than 250 to 300 on the high side. the high side will increase when you apply throttle but will come down when you let off. also take into consideration that there will be air flowing across the condensor when you are moving.

if both gauges are low - add freon. without measuring weight add until readings come up.

if both are high - too much freon.

if low is normal but high is higher - a restriction in the system.

MAKE SURE THE HIGH SIDE VALVE IS CLOSED BELOW THE GAUGE. CLOSED.
NEVER ADD FREON THROUGH THE HIGH SIDE. BAD THINGS CAN HAPPEN.

it is real easy to look at. if you have an R12 system you need R12 fittings on the gauges. and the same for R134. if you have a R12 system you need to retrofit. around where i live R12 is about 100 bucks for 8 ounces.

good luck and take your time

 

I figured it out guys thanks anyhow, My car has no ac symtoms because I dont have ac in it

I just needed to know what the guages needed to read while filling a system with a charge already in it was.

So far my understanding is about 30-45ish for the low and the high should be about 100 + the outside temp with relativly low humidity. With the car off they should balence out within a few minutes.

 

Remember to vaccum the system and add the proper amount of PAG46 oil. With ambient outside temperture at about 90 degrees, your low side should be about 30-45 and high side 2.2 times the ambient temperture so that should be roughly 198-220. Here are some good forums to search for A/C infomation

http://www.aircondition.com/wwwboard
http://www.acsource.net/acforum/
http://www.autoacforum.com/