Copeland Compressor Oil Change 

Welcome back!

Sir, where do you connect Vacuum pump for sucking oil.do you connect in compressor suction king valve? Plz let me know

you are 100 % correct on that one, all vibration absorbers are to be installed parallel to the crankshaft of the compressor, also the oil level should be checked with the compressor in operation!!!

Thank you Gary!

Thanks!

I'd suspect a faulty expansion valve or other restriction given the symptoms you describe, though lack of flow in the evaporator would give similar results. Mineral oil is compatible with R22, though some compressors use alkylbenzene oil for R22, best to check with the compressor or equipment manufacturers if unsure.

+Mohamedwalid Doussa I am not too sure what you are asking, maybe something got lost in translation. If the compressor oil level keeps dropping it can be there is liquid coming back in the suction line. It can be due to bad valves in the cylinder head, it can be due to a bad oil separator or blocked oil filter. Also if the crank case heater is faulty it can make them pump oil out when the compressor starts from cold. Sometimes different makes of oil do not mix well and make foam which gets pumped away. There are other thing too than can cause oil problems.

I think this was shot with a Flip camera but Cisco stopped making them, most of my recent stuff is done with an iphone5

What is blocking the filter? This system had a lot of metal particles due to previous failed compressor failures.

Your compressor would use a different type of oil as it is compressing air, this compressor pumps refrigerant so the oil is never exposed to oxygen or moisture. I would think an equivalent 32 weight air compressor oil would do. Also might be worth having a look on Amazon or ebay for the correct oil.

Hello, I don't understand your comment, could make it again with different words?

On this system the thermostat directly controls the compressor (via a contactor). When the system needs to cool the thermostat sends a live feed to the low pressure switch, high pressure switch, thermistor module, and overload relay, if all these safety devices satisfied the contactor will energise and run the compressor, the solenoid valve opens when the compressor starts. This is the factory wiring for this system though i believe it would be better if the thermostat just controlled the solenoid valve and the system pumped down and turned off via the low pressure switch.

heavydiesel Hi thank you very much and happy new year. i attached a pressure gauge to the suction side and noticed when the set point temp is reached, pump down starts until 0 psi pressure is reached and after that the system shuts down. i really don't understand the wiring. can we talk over fakhrealammm@gmail.com, i will send some pics of the control panel as well. i really want to understand the wiring of this system.

Hi Dejan, I don't have any information for that model, try asking Copeland themselves, or your local wholesalers technical department.

Hi Julio, on this size of compressor there is no need to change the oil unless it has become contaminated some how. On bigger compressors there are oil change intervals, some big Frascold compressors we used to look after got an oil change every couple of years for example.

Hi Fakhre, A hot liquid line is a sign of a dirty or undersized condenser or faulty fans, or possibly the system is working very hard, either due to high air temperatures by the condenser or high heat loads on the evaporator or a combination of these factors. (assuming its an air cooled condenser) There will be other things that can cause high liquid line temperature but that is what i can think of now!

thanks and sorry for the late reply back. the man culprit were condenser fans, 2 out of 4 are controlled by high discharge pressure and hence kicks on when pressure is high. changed the danfoss kp5 sensor and its good now.

Tim Gomes Yes, you need to pump it down, though in big commercial systems i have seen them piped up with shut off valves and a bypass so the filter can be changed without stopping the system. If i get a system with a big moisture proble i will put a shutoff valve after the drier, that way i only need to vacuum out a small part of the system.

I am not 100% sure on these as they have an oil pump, I think its 4GS if mineral oil which I think is a 48 weight POE, the non pumped ones its 3GS or 32 weight. Best to confirm with the agents or a compressor rebuilders.

I have an empty disposable refrigerant cylinder I have brazed another port onto, use vacuum pump to pull vacuum in cylinder to suck the oil out of the compressor.

@@heavydiesel thank you that's great

That compressor in your vid sounds a bit noisy, Frascold is not that common here which is a shame as they seem ok.

On smaller compressors there is no need to change the oil unless it gets contaminated as in this case, they'll run 20 plus years on the same oil. Bigger compressors 15/20hp plus have service intervals depending on make and model where its recommended to change the oil every so many thousand hours of operation. If in doubt check with the manufacturer.

Thanks very much for the response. I have a 2 head KAT4-100 compressor and never did a full oil change. One head is running hotter than the other and is tripping the breaker only sometimes. Gotta figure out if its the 20 year old breaker or 20 year old oil! Gonna change em both. Thanks.

The short flexible pipe on the oil removal tank? Its the end of an old gauge line, it was easier than making up some 1/4 copper!

how much from 1 to 10 on how overkill it would probably be if somone bough a 70hp compressor semi hermetic and used it for PC phase change cooling well it's got more than enough grunt to hold sub zero temps

Its an older style Britool one.

heavydiesel right on thanks

+振宇杨 这是一个谷轮牌压缩机，我不明白你对代理的问题。

就是在中国卖这个牌子的机器。就是分销商的意思

我想做这个牌子的经销商

+振宇杨 åja det e sånn det e

Thanks for the constructive criticism, I'll be sure to check out your channels videos to get some pointers on where I'm going wrong!

Thanks for commenting Hadi