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Why do we change the oil for semi sealed compressors only,
why do we change the oil for semi sealed compressors only , but why not for hermetic compressors ?… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
I have a trane ycc060f3m0bf Roof top unit i have replaced
I have a trane ycc060f3m0bf Roof top unit i have replaced the compressor and have a high subcooling and head pressure at 297psi when ambient is 88F Suction 59psi , i have changed 8lb of r22 when the f… read more
D.E. Anderson
D.E. Anderson
Industrial Refrigeration Service Manager
200 satisfied customers
I am working on a 15 ton carrier package rooftop unit. The
I am working on a 15 ton carrier package rooftop unit. The semi hermetic compressor burnt out. So i am replacing it with a 15 ton danfoss scroll compressor. I am leaving the old compressor in the unit… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
i have a walkin cooler that has 25F superheat and 37F subcooling,
i have a walkin cooler that has 25F superheat and 37F subcooling, sight glass is not full. box temp 41F , i set to 38F. compressor amp 5.40A and RLA is 5.5A evaporator 28F suction line 54F, condenser … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
I have a unit that has been installed two years ago. It is
I have a unit that has been installed two years ago. It is united ref store brand. It is a five ton heat pump with a single speed copeland schroll compressor. Has worked well until today. It seems to … read more
airheatman
airheatman
Heating & Air Conditioning Contractor
6 years college
8,227 satisfied customers
Hi, I have a 10 year old Carrier commercial heat pump - running
Hi, I have a 10 year old Carrier commercial heat pump - running in heating mode. Works fine, but the high pressure switch kicks off after some time, because the pressure starts to jump up and down - w… read more
V12Tech
V12Tech
252 satisfied customers
I have copeland semi-hermetic compressor. The problemis the
I have copeland semi-hermetic compressor. The problemis the unit keeps shuting its self down. It started when it kicked out on the oil control so I drained the oil and put fresh oil in and changed the… read more
V12Tech
V12Tech
252 satisfied customers
I am not a HVAC Technician, however I had technicians over
I am not a HVAC Technician, however I had technicians over for the last 4 days trying to solve a low level of oil in one of the copeland semi hermetic compressor(model D4DL5 150x). Have filled up the … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
I have a heatcraft LSc065as1 walkin cooler... dropped in HOT
I have a heatcraft LSc065as1 walkin cooler... dropped in HOT SHOT refrigerant.... The compressor is overheating and shutting down.... and the pressure does not equalize once it is off (150 psig high/7… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
Model #NCAR15H0018, Serial #3077 G2390-1879. The units lubercation
Model #NCAR15H0018, Serial #3077 G2390-1879. The units lubercation safty trips frequently, oil and refrigerant have been added. What tests/ ideas of what may be the cause. David Ziese [email protected]… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
HI DOUGLAS WE HAVE A CARLYLE O6DF5376BC1200 6CYL SEMI HERMETIC
HI DOUGLAS WE HAVE A CARLYLE O6DF5376BC1200 6CYL SEMI HERMETIC COMPRESSOR IN AN AIR CONDITIONING APPLICATION 45 F SST AND 110 F SCT 10 F SUBCOOLING AND 20 F SUPER HEAT THE SYSTEM IS R22 AND HAS A RECI… read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,087 satisfied customers
I have a walk in freezer witha copeland compressor on it, I
I have a walk in freezer witha copeland compressor on it, I have been having troubles with it tripping out on low oil for months and hve been unsucessful with solving the problem.… read more
Tom
Tom
HVAC Technician
Vocational, Technical or Trade Scho
770 satisfied customers
I noticed that my outdoor condensing unit was running (fan
I noticed that my outdoor condensing unit was running (fan + compressor) when the thermostat was set to heat. It would still run with the control/thermostat wires disconnected at the condensing unit. … read more
Bart Jay
Bart Jay
Vocational, Technical or Trade Scho
Iam a HVAC contractor in Texas I have a 30RBA0705--00--3 chiller
I'am a HVAC contractor in Texas I have a 30RBA0705--00--3 chiller that has compressor A2 bad what is the proper proceedure to change out compressor the rotar is bad it's not burnt. It's 410A can I rec… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
i am also an hvac tech.i was repairing an old compressor for
i am also an hvac tech.i was repairing an old compressor for a lennox system and a lot of oil leaked out. i am very worried because this customer is a valued one. any suggestions?… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
my central ac is not cooling. had a guy come out and pressure
my central ac is not cooling. had a guy come out and pressure test it and add some freon. The compressor is fine the outside temps were fine. I changed the filter cleaned the coils outside. When he pr… read more
Heath Moyer
Heath Moyer
1,064 satisfied customers
A grounded out compressor was replaced 2 weeks ago with a new
A grounded out compressor was replaced 2 weeks ago with a new filter dryer and acid neutralizer and it has grounded out again. What would cause this to happen? The owner said that it was making a loud… read more
Doug Scott
Doug Scott
Owner/Service Technician
Bachelor's Degree
42 satisfied customers
I do have a carrier refrigeration compressor sitting on an
I do have a carrier refrigeration compressor sitting on an ice machine. It is a 15 ton hermetic compressor. How do I add oil to it if it is low? What oil should I use? Will there be a pressure in the … read more
Tom
Tom
HVAC Technician
Vocational, Technical or Trade Scho
770 satisfied customers
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Meet the Experts:

Phil

Phil

Mechanical Engineer

7,791 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,024 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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