msgale
10-08-2013, 03:32 AM
System is a Goodman ,1998, 1.5 ton, R-22
There was poor cooling , with pressures low on both low and high sides, and many bubbles in sight glass. I found the leak at the evap, (they always seem to leak there) . I replaced evap. , system then held vacuum, and now I'm in the process of recharging with my dwindling supply of real r-22.
But, halfway through the recharging, the suction pressure is too high, and I wonder if the compressor is on its last legs.
I hate to waste more r-22 to completely fill it , and then discover I need a new compressor. I am not sure how to read these numbers, since I do know the system is still undercharged. Here are numbers while partly charged:
Suc press=102, ( why so high?) evap outlet temp is 66, which calculates to superheat of 8
High side pressure is only 175, with outside air temp of 77, and condenser outlet temp of 87, for a subcool of only 3.
Inside dry bulb=80, wet bub =70
Sight glass shows mostly foam, rarely clear.
Is it worth continuing to charge or can I conclude from the these numbers that I’ll need to replace the compressor ( or maybe replace entire system with new)
There was poor cooling , with pressures low on both low and high sides, and many bubbles in sight glass. I found the leak at the evap, (they always seem to leak there) . I replaced evap. , system then held vacuum, and now I'm in the process of recharging with my dwindling supply of real r-22.
But, halfway through the recharging, the suction pressure is too high, and I wonder if the compressor is on its last legs.
I hate to waste more r-22 to completely fill it , and then discover I need a new compressor. I am not sure how to read these numbers, since I do know the system is still undercharged. Here are numbers while partly charged:
Suc press=102, ( why so high?) evap outlet temp is 66, which calculates to superheat of 8
High side pressure is only 175, with outside air temp of 77, and condenser outlet temp of 87, for a subcool of only 3.
Inside dry bulb=80, wet bub =70
Sight glass shows mostly foam, rarely clear.
Is it worth continuing to charge or can I conclude from the these numbers that I’ll need to replace the compressor ( or maybe replace entire system with new)