User Profile

[Cornbinder89]

everything seam "normal" except the low pressure reading when the cab is closed. Not being well versed on the ag systems, I am wondering if...

[Cornbinder89]

IIRC these use a resistor pack for the slower speeds and a high blower relay for the fastest. It sounds like someone bypassed it all and ran power direct...

[Cornbinder89]

Very hard to follow that, but I think I am seeing the pressure rise to 26.5 bar which is close to 400 psi. What has been done to the system ? did it work...

[Cornbinder89]

Ammonia is a great refrigerant much better than R12 in heat moved per weight of refrigerant but is a "class B" refrigerant so you are limited...

[Cornbinder89]

Yeah, the small portables can have a solenoid or sometimes called a "swing" compressor, where a little iron piston is moved back and forth,...

[Cornbinder89]

Poor cooling at idle or slow speed with good cooling at high speed is almost always poor heat transfer at the condenser. Either air is going around rather...

[Cornbinder89]

Many home refrigerators and A/C use scroll compressors but they are still motor driven, the only pulse type I am aware of are small portable refrigerators...

[Cornbinder89]

Saw a funnel cloud north of the house, but didn't reach the ground, I guess one did 7 miles north of us did but no reports of damage.
At 7 am the...

[Cornbinder89]

Zero, none, nada, experience with them, they were discussed at one point, either here or in the archive section. Not much involved practical problems...

[Cornbinder89]

I would agree with you assessment that those readings low charge, The question then is why was it so high before? 312 and 28? I wouldn't be to concerned...

[Cornbinder89]

Looking at how it is stuffed in there, I'm not sure you can expect much more, It is much like my Cabover Semi tractors. Lots of external heat, large glass...

[Cornbinder89]

320 @ 1500 and 80 deg is too high, possible you added too much or have poor airflow over the condenser. It shows why "topping up" without knowing...

[Cornbinder89]

Fast cycling and low, low side when the compressor is on at speed suggest the charge is low (with a CCOT system). Not real low, but still not right. ...

[Cornbinder89]

Your high side is higher than I'd like to see at that temp. If your sure you have the recommended charge by weight, I would try "misting" the...

[Cornbinder89]

I would suggest, talking to the A/C supply house in your area as to prices for recycling used refrigerant or proper disposal. ,...

[Cornbinder89]

I doubt in that price range you'll find a recycling machine. Most will be recover only. Unless your planning on doing a lot of A/C work just recover and...

[Cornbinder89]

Not really. You can make your own recovery device, but the cost is not cheap. The recovery tanks alone are more than paying someone to recover and recharge...

[Cornbinder89]

Forget the "charts" they mislead more then they help.
This is the most important chart
https://forum.aircondition.com/forum/ref...

[Cornbinder89]

Both high and low pressures are high. If you are SURE about the amount of refrigerant being correct. I wonder if you have some non-condensable gas (air)...

[Cornbinder89]

Pressure should be equal if the system is static (no compressor operation) . With the two gauges not reading the same, the 1st question is which is correct...