Low pressures good charge

 
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Old 05-22-2013, 09:06 PM   #1
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Low pressures good charge


Got a residential a/c at work having trouble with its a couple yrs old 410 unit. It's running low pressures 90/240, 10 degrees SH at evap outlet, 6 degrees subcooling, clean air filter no returns blocked(lots of return grills), fan in high speed, clean coils, recovered and weighed charge was bang on, 20 ft line run (tried adding a couple ozs more had no change) txv, when furnace door removed only gets up to 115 suction pressure, 1800 sq ft house with walkout 3.5 ton unit, haven't checked for a temp drop accros factory drier but if that ain't my problem idk what direction to go in.....ideas?

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Old 03-11-2014, 12:00 AM   #2
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Re: Low pressures good charge


Can you please let me know what is the fact that the motor's output torque is defined
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