Grayfeathers
Member
Unit is a rooftop 5 ton Goodman about 10 years old. Unit was not running and compressor was grounded when I first arrived. Unit was also void of refrigerant because of two leaks, one in suction service line and the other in the middle of liquid line dryer.
I repaired leaks, replaced compressor and dryer, pulled it into a deep vacuum and charged unit by weight to factory charge of 5.125 lbs. Unit starts after three minute delay and within seconds both the suction and discharge pressure drops at the same rate. I don't know how far it would drop because it's evident to me that it is not going back up and I quickly switch the unit off at the disconnect. I have had this done before and it's always been the dryer stopped up but this is a new dryer that I have installed. And before you ask, yes the dryer is in the system the correct direction. The only other option that I can see that it could be would be the metering device has trash in it. Am I missing something else? This metering device is hard to get to and will require a lot of man hours to check.
Brief history. I have been licensed by the State of Alabama sense 1996 but I don't work on rooftop units much and I wanted other opinions before I began tearing this unit apart.
Thanks for your opinions.
Tim
I repaired leaks, replaced compressor and dryer, pulled it into a deep vacuum and charged unit by weight to factory charge of 5.125 lbs. Unit starts after three minute delay and within seconds both the suction and discharge pressure drops at the same rate. I don't know how far it would drop because it's evident to me that it is not going back up and I quickly switch the unit off at the disconnect. I have had this done before and it's always been the dryer stopped up but this is a new dryer that I have installed. And before you ask, yes the dryer is in the system the correct direction. The only other option that I can see that it could be would be the metering device has trash in it. Am I missing something else? This metering device is hard to get to and will require a lot of man hours to check.
Brief history. I have been licensed by the State of Alabama sense 1996 but I don't work on rooftop units much and I wanted other opinions before I began tearing this unit apart.
Thanks for your opinions.
Tim