Refrigerant Type: R134
Ambient Temp: 61
Pressure Low: 15
Pressure High: 190
First some back ground
I needed to replace the heater core so while I was there I resealed the blend doors and change out the evap. core. Do not want to do that job again. I then replaced a hose from the condenser to the new TXV and put in a new drier. I then pulled a vacuum for over an two hours and then added about 28oz of R134.
Vent Temp 35
The compressor kicks in but does not cycle off/on do I need more R134 or???
I have few questions.
87? Was it originally R12? Did you convert? Was it already converted? Properly? Has a condenser upgrade been done? Was the evap leaking? Had it been often "toped off"? Sealers? Did you remove, drain, and add fresh oil to the compressor? Did you flush the condenser (clean & dry)? Did you distribute the factory specified amount of fresh oil into the system? Is 28 oz of refrigerant the original factory fill specified from the manufacturer? Using a scale? Are the existing and new system parts factory stock?
It may not cycle at that low of an ambient temp, vent temp looks good; could hang meat.
Thanks for the help.
Yes 87 that had R12 original. About six/seven years ago it was converted to R134. New parts installed SD 508 compressor, condenser serpentine with a pusher fan, txv, evaporator (copper tube and fin), drier - accumulator, HS hose, other hoses taken apart cleaned and new barrier hose install to replace older type hose, high pressure cut off switch added, conversion fittings and labels(kit from VW), BVA Auto 100 oil distributed per factory specified amounts, compressor was flushed of factory oil and the proper amount added back(BVA 100), O rings with NYLOG blue. I think thats it for the new parts.
Had it been often "toped off"? No
Sealers? No never
Was the evap leaking? No just thought if I am in here to replace the leaking heater core might as well change out the evaporator( now aluminum tube and fin).
Is 28 oz of refrigerant the original factory fill specified from the manufacturer? No thats the amount based on the label in the retrofit kit VW #357 820 794 Label said 800 grams/28 oz. Original R12 label was 1100+/- 50 grams(39 oz +/- 2 ) So thats about 72 % of what the R12 was. I used a $50.00 Gram scale
"It may not cycle at that low of an ambient temp"
OK so Ill have to wait tell it gets a little warmer. If I understand this correctly then in the winter when you use the defroster the compressor will not cycle either.
Your should have a TXV, it will seldom cycle, low charge or overcharge will do it, otherwise don't look for cycling...,
Freedoms just another word for nothing left to lose
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