Johnson Controls Sabroe SAB 233 S

Questions and Answers

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Chad MartinezSep 12, 2025
What to do if there is rapid oil loss in my Johnson Controls Air Compressor?
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  Anthony GallegosSep 12, 2025
  Rapid oil loss with no oil level in the coalescer section sight glass in your Johnson Controls Air Compressor can occur if, on shutdown, the compressor unit suction check valve did not close, so repair the valve. The suction check valve bypass may be open too far, so close the valve. Coalescers may be loose or not seated properly, so correct or replace them. On an economized unit, the economizer check valve may not be working, so repair or replace it.
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Sean BirdAug 23, 2025
Why is the discharge pressure excessively high in my Johnson Controls Air Compressor?
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  Sarah WrightAug 23, 2025
  Excessively high discharge pressure in your Johnson Controls Air Compressor can be due to several reasons. The safety cut-out might be set too low, so check the settings of alarms and warnings. There could be high discharge line loss, so inspect the valves. A malfunctioning condenser may also be the cause; check the condenser, liquid drain, refrigerant charge, water/air inlet temperature, and water/air flow. Finally, air or non-condensable gasses in the system can cause this issue, so purge the air from the condenser side.
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Michelle ColeAug 25, 2025
How to fix excessively low suction pressure in Johnson Controls Sabroe SAB 233 S Air Compressor?
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  Gabriel BriggsAug 25, 2025
  Excessively low suction pressure in your Johnson Controls Air Compressor can be caused by a refrigeration load that's lower than the compressor capacity; in this case, reduce compressor capacity. It could also be due to high suction line loss, so check the valves and strainers. Another cause might be a malfunction of the evaporator, so inspect the evaporator for fouling or accumulated oil. Also, check the liquid expansion valve system, filter in the liquid line, and ensure there is sufficient refrigerant charge.
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Erica BurnettAug 26, 2025
What to do if my Johnson Controls Sabroe SAB 233 S Air Compressor has excessive noise and vibration?
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  Kimberly RomeroAug 26, 2025
  Excessive noise and vibration in your Johnson Controls Air Compressor could stem from several issues. The main oil injection valve may be closed or open too far, so open or adjust it accordingly. Bearing damage or excessive wear can also cause this, requiring bearing replacement. Additionally, the slide valve/slide stop might be out of calibration, needing calibration. A loose coupling on the shaft should be tightened or replaced if damaged. Finally, refrigerant flood back (liquid slugging) can lead to these symptoms, so correct the underlying system problem.
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Sara EvansAug 29, 2025
Why won't the capacity slide valve move on my Johnson Controls Sabroe SAB 233 S Air Compressor?
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  Jason KelleyAug 29, 2025
  If the capacity slide valve or slide stop on your Johnson Controls Air Compressor won't move, preventing unloading/loading, it could be due to insufficient oil pressure, so check the oil pressure. The solenoid coils might be burned out, requiring replacement. Incorrect valve settings in the hydraulic system could also be the cause, so check according to the hydraulic system description. Lastly, a malfunction of the 4-way control valve of slide components could be the issue, so check according to the description of main components.
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Amy OneillAug 31, 2025
What causes high suction pressure and insufficient refrigeration capacity in a Johnson Controls Air Compressor?
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  Matthew RomeroAug 31, 2025
  High suction pressure combined with insufficient refrigeration capacity in your Johnson Controls Air Compressor can occur if the compressor protection valve is opening or leaking, so check the discharge pressure safety cut-out settings and the pilot/main protection valve. An oil return valve that is fully open can also cause this issue, so adjust the regulating valve. Finally, a clogged suction strainer can lead to these symptoms, so clean the strainer.
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Amber MortonSep 19, 2025
Why is grease leaking from the vent port of my Johnson Controls Sabroe SAB 233 S?
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  Michael DuncanSep 22, 2025
  Grease leaking from the vent port in the side of the pump body is normal and will cease after initial operation. However, black oil leaking from this vent indicates oil seal wear or failure. If leakage exceeds the normal allowable rate of 7 drops per minute, replace the seal.
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Kathryn FosterNov 26, 2025
Why is the oil temperature too high in my Johnson Controls Sabroe SAB 233 S Air Compressor?
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  Billy RayNov 26, 2025
  High oil temperature in your Johnson Controls Air Compressor, accompanied by high discharge temperature, can be attributed to several factors. Check that the valves in the oil system are fully open. If you have a 3-way oil temperature control valve, check its function and replace the sensor element if needed. For water-cooled systems, check the oil cooler for fouling, water inlet temperature, and water flow. For refrigerant-cooled systems, check/drain accumulated oil in the oil cooler and ensure the gravity-fed refrigerant system is fully flooded. For liquid injection systems, check the settings in the control system, valves, and strainer in the liquid injection line. Also, verify that the compressor protection valve is not open or leaking by checking the discharge pressure safety cut-out ...
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Rebecca HessSep 9, 2025
What causes gradual oil loss in my Johnson Controls Sabroe SAB 233 S?
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  Glenn WhiteSep 9, 2025
  Gradual oil loss in your Johnson Controls Air Compressor, with an oil level in the coalescer section sight glass, can be due to maintaining too high an oil level; lower the level by opening/adjusting the oil return valve. It could also be caused by refrigerant carry-over or liquid injection overfeeding, so correct the operation. Loss of suction superheat can also contribute, so adjust evaporator feeds. Contaminated oil or damaged coalescer elements may be the cause, so replace the oil charge and coalescers. A closed coalescer return valve should be opened. Finally, a blocked coalescing oil return line strainer should be cleaned.
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Jessica FieldsSep 6, 2025
Why is the discharge temperature very low in my Johnson Controls Sabroe SAB 233 S Air Compressor?
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  Yesenia ChaneySep 6, 2025
  A very low discharge temperature in your Johnson Controls Air Compressor, accompanied by low oil temperature and potential oil foaming in the oil separator, can be caused by excessive liquid in the suction line or liquid slugging. Check the evaporator and expansion valve function, and decrease the rate of evaporator temperature "pull down." Alternatively, liquid injection may be overfeeding, so check the settings in the control system and the stability of the liquid injection.