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1.ton ac capillary pipe size and length I want to know. B coz suction line cooling level is very low gass psi 75

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  • Heating & Co... Master
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I'm guessing you should have 3/8 & 5/8 copper on that unit with a maximum of 50 feet. I doubt the line set size is affecting your pressures that significantly, you likely have a leak.

Posted on May 05, 2017

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Posted on Jan 02, 2017

bobotfel
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SOURCE: 2 ton sanyo suction pressure erratic

Your suction pressure is erratic, your max. pressure is to much high. You did not measure your unit current reading liquid line press. to complete the data. But the problem of your unit is not the compressor its the system. Try to reprocess the system flush the unit with nitrogen, isolate the capillary tube and flush it with nitrogen to insure that no restriction.

Posted on Jan 04, 2008

22yooper
  • 828 Answers

SOURCE: ac freezes up

Exactly how much refrigerant did you charge into the system when you recharged it? If the suction pressure is varying that much you most likely over charged the system and got a liquid flood back which took out the compressor valves.

Posted on Jul 07, 2008

  • 146 Answers

SOURCE: AC not cooling

first off you should have a four ton unit. what is your super heat? is it pulling attic or outside air?

Posted on May 28, 2010

  • 127 Answers

SOURCE: AIR CONDITIONER IS NOT COOLING,

there is probably a leak in the systems somewhere, it needs to be inspected for a leak and charged with R-22 for proper cooling.
There is a stop leak for air conditioning systems available to licensed technicians to buy, might work if the leak is very small.

Posted on Aug 24, 2011

johnf1aresti
  • 1098 Answers

SOURCE: 2000 vw Jetta ac not cooling, ac compressor is on, freon level good, with ac manifold gauges high and low side fluctuates from 50-60 psi on low side.

try to throw cool water on the condencer front of the engine radiator and see whether any cool air comes in the car. If so see whether the pressure valve is working okey or not because might the pressure is not sufficient.

Posted on Sep 05, 2012

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Charging AC by superheat and subcool
First charging a unit by superheat, this is only for Acs with an orifice or capillary tube.
Optimum superheat is 12° to 15° at the compressor or suction line outside the unit.
Hook up your gages and put a thermometer on suction line (large line), start the AC. Measure the temperature of the suction line and read the pressure on your gages. Theres a temperature scale on your gages for R-22 or R-410A the needle will show you the pressure on the outer scale and if you follow it down to the R-22 or R-410a inner scale that is the saturation temperature for that refrigerant, (you can also use a temperature pressure chart), now read the thermometer, let’s say the suction temperature( the thermometer) is 67° and the saturation temperature (the gages or temp. press. Chart), is 55°, subtract the saturation temperature from the suction temperature, 67°- 55° = 12° superheat.
Charging by Subcooling, this is for Acs with a thermostatic expansion valve, it’s common to see a sight glass on the liquid line (on these units with a sight glass just clear it, when, indoor room is at approximate set point of the thermostat). Optimum sub cooling is 12° to 15° at the outdoor unit.
Hook up your gages and put a thermometer on liquid line (small line), start the AC. Measure the temperature of the liquid line and read the pressure on your gages. Theres a temperature scale on your gages for R-22 or R-410A the needle will show you the pressure on the outer scale and if you follow it down to the R-22 or R-410a inner scale that is the saturation temperature for that refrigerant,(you can also use a temperature pressure chart), now read the thermometer, let’s say the liquid temperature( the thermometer) is 100° and the saturation temperature (the gages or temp. press. Chart), is 114°, subtract the liquid temperature from the saturation temperature, 114°- 100° = 14° subcool.

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2 ton sanyo suction pressure erratic


Your suction pressure is erratic, your max. pressure is to much high. You did not measure your unit current reading liquid line press. to complete the data. But the problem of your unit is not the compressor its the system. Try to reprocess the system flush the unit with nitrogen, isolate the capillary tube and flush it with nitrogen to insure that no restriction.

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