Question about Chicago Pneumatic Qrs 5 HP/3 Phase Rotary Screw Air Compressor

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How to find a 3 phase compressor tonnage by it's RLA or LRA

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How to check compressor lra to converta ton

Posted on Aug 28, 2012

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LRA 559 COMRESSOR TONAGE ?

Posted on Nov 02, 2012

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How we know in 3 phase compressor tonnage

Posted on Jan 07, 2013

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1 Answer

LRA 55.0 convert to TON


LRA is locked rotor amperage. Has nothing to do with Tonnage. Also Tonnage is not used anymore. The rating is now called SEER

Jun 02, 2016 | Heating & Cooling

1 Answer

LRA how to convert in tonage so 10 LRA How many ton and 145 LRA Copland scroll compressor tonage value pleas give me answer


LRA on the data tag stands for "locked rotor amps" and has nothing to do with tonnage. In the model # there should be a number to use. And divide that # by 12 (12,000 btu/ton). So if I had a PFG24H200 it would be the "24"and a 2 ton unit

Jul 06, 2015 | Heating & Cooling

1 Answer

My islandaire ptac keeps tripping the breaker what should i look at?


If it were me I would use an amp meter and take an amp reading of the compressor when it is fully loaded. then I would refer to my name plat. which should be located on unit or if you can read label on compressor that is even better. FLA is fully loaded amps. RLA is running load amps, and LRA is locked rotor amps. if your amp readings is close to LRA or higher than FLA then I would recommend changing your compressor, The last thing you want is a compressor burn out.

Mar 08, 2013 | Heating & Cooling

1 Answer

How many horse power for lra 69 aircon compressor


LRA 69 split air conditioner rotoary compressor r 22 single phase compressor higher ampere howmuch

Feb 25, 2013 | Heating & Cooling

1 Answer

I am removing a 3 ton condenser and replacing with a 31/2 ton condenser . The evap coil is a 3 ton with an expansion valve with a 11/2 ton to a 3 ton rating. Will i have any problems. The 31/2 ton unit is...


Yes you will have problems you can go up a 1/2 half ton on the coil but not with the condenser don't do it you will regret it even with an expansion valve.

Jun 21, 2011 | Heating & Cooling

1 Answer

My church has a roof top ac unit, model # GP-1360H41BA. The ratings plate has the following ratings: RLA 26.4 AND LRA 134. What is the KW draw of this unit 1. At startup 2. After startup?


RLA ( rate load amps/current) is the rate of unit ( usually about 65% against Max. load current < FLA/FLC>)
LRA ( Locked rotor amp/current)

Seems your AC use Y or Delta starter, so at start the current draws will between : 3X ( 26.4 to (26.4(1 +35%). And After start up the current draws will drop to 26.4 to 26.4(1+ 35%) in normal operation.
Remember, that the current draws also depending to the condition of your ac.

Nov 03, 2010 | Goodman Heating & Cooling

1 Answer

On the unit model/serial# tag there is three terms.what do they mean,compressor lra/rla and fan fla


Compressor LRA ( locked rotor amps)meaning that if you hold that rotor and do not allow it to turn, it would draw that many amps.
Compressor RLA (rated load amps) meaning the amps the compressor will draw at a certain outdoor temperature usssually 95°.
Fan FLA (Full load amps) meaning that's the maximum amps the motor will run at continuosly.

Feb 07, 2010 | Carrier Heating & Cooling

1 Answer

I am looking for specs, specifically the RLA, on a Carrier Model 48LH006600(?)-- not sure about model #, nameplate data is totally faded!


It will tell you on the metal plate on top of the compressor, or sticker what the R.L.A.are and the L.R.A's are. If you cant read them, try and get what information you can from the compressor, like the name, Tecumseh, Copeland scroll, ect, The 48 would be the tonnage, 4 ton, or 60 a 5 ton unit. You should have enough of the model number for a air conditioning wholesale parts house to tell you this. we deal with this in the field daily.
Good Luck, Shastalaker7 I hope this helps you.

Nov 06, 2009 | Humidifiers

1 Answer

Have power and light. can't hear compresser run


could be a bad start relay or start cap. could be a bad compressor. if you have an electric meter you can test the ohms of the compressor and that can tell you if the windings are good, however it cannot tell you if the piston is locked. if you have a locked rotor condition and bad starting components you will not be able to tell until you replace the bad starting components and test run. if it hums and draws lots of amps its locked rotor. most compressors will tell you RLA and LRA amperage, LRA is locked rotor amps, RLA running load amps

Oct 10, 2009 | Kenmore Freezer 20.3 cu. ft. Frost Free...

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