Johnson Controls Sabroe SAB 283 L

Questions and Answers

P
pmorrisonSep 12, 2025
What to do if there is rapid oil loss in my Johnson Controls Air Compressor?
- D
  Damon HodgesSep 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.
D
Denise RileyAug 23, 2025
Why is the discharge pressure excessively high in my Johnson Controls Sabroe SAB 283 L?
- D
  Deborah PeckAug 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.
N
nicolehillAug 25, 2025
How to fix excessively low suction pressure in Johnson Controls Sabroe SAB 283 L Air Compressor?
- G
  grodriguezAug 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.
C
Charles SmithAug 27, 2025
What to do if my Johnson Controls Sabroe SAB 283 L Air Compressor has excessive noise and vibration?
- J
  Joshua BakerAug 27, 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.
J
jacob46Aug 29, 2025
Why won't the capacity slide valve move on my Johnson Controls Air Compressor?
- T
  Tiffany PayneAug 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.
A
Angelica PriceAug 31, 2025
What causes high suction pressure and insufficient refrigeration capacity in a Johnson Controls Sabroe SAB 283 L Air Compressor?
- N
  Noah WelchAug 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.
K
Kevin ParkerSep 22, 2025
Why is grease leaking from the vent port of my Johnson Controls Sabroe SAB 283 L?
- R
  Robert GoodmanSep 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.
E
Edwin AriasNov 27, 2025
Why is the oil temperature too high in my Johnson Controls Sabroe SAB 283 L?
- K
  Kevin GrossNov 27, 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 ...
S
Samuel SharpSep 9, 2025
What causes gradual oil loss in my Johnson Controls Air Compressor?
- J
  jerry71Sep 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.
G
gregorypriceSep 6, 2025
Why is the discharge temperature very low in my Johnson Controls Sabroe SAB 283 L?
- J
  Jennifer RamirezSep 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.

Johnson Controls Sabroe SAB 283 L Specifications

General

Manufacturer	Johnson Controls
Category	Industrial
Refrigerant	R22, R134a, R404A, R507
Cooling Capacity	Variable based on configuration
Compressor Type	Reciprocating

Summary

2. Signs and warnings

2.5 Labelling of explosion-proof equipment

Details ATEX labelling, material groups, categories, and temperature classes.

2.8 Signs

Illustrates and explains common safety signs found on the equipment.

3. Safety precautions

3.1.1 Application of the screw compressor

Details where the screw compressor can and cannot be used.

3.2.1 General precautions

Provides general safety guidelines to supplement other manuals and codes.

3.2.2 Work area safety

Covers maintaining a clean and safe work environment around the unit.

3.2.3 During operation

Highlights safety measures to be taken before and during unit operation.

3.2.4 Safety during maintenance and service

Details safety procedures for maintenance and servicing tasks.

3.2.5 Electrical installations

Specifies safety requirements for electrical installations, including ATEX.

3.2.6 Power supply

Warns about electrical hazards and precautions for power supply.

3.2.7 Lubricating oils

Lists types of lubricating oils and safety guidelines for handling.

3.2.8 Refrigerants

Provides warnings and safety data sheets for handling refrigerants.

3.2.10 F-gas regulation (fluorinated greenhouse gases)

Details F-gas regulation requirements like labelling and leakage tests.

3.2.11 First aid for accidents with ammonia

Provides first aid measures for exposure to ammonia.

3.2.12 First aid for accidents with HFC;HCFC

Outlines first aid procedures for accidents involving HFC/HCFC refrigerants.

3.2.13 Protecting the operator as well as the environment

Covers environmental protection measures related to refrigerants and oils.

4. Technical description

4.1 Description of the screw compressor

Provides a general description of the screw compressor unit's design and construction.

4.4 Control system

Details the UniSAB III control and monitoring system.

4.5 Compressor

Describes the compressor block, including its suction strainer and stop valve.

4.6 Variable speed drive (VSD)

Explains the use of VSD with compressors and associated vibration risks.

4.7 Compressor lubrication system

Details the functions and types of compressor lubrication systems.

4.12 Compressor oil separation system

Describes the oil flooded compressor and the oil separation process.

4.16 Compressor hydraulic system

Details the hydraulic system for moving the slide valve and slide stop.

4.17 Compressor oil cooling systems

4.18 Liquid injection oil cooling

4.19 Requirements for ambient temperatures and humidity

4.21 Selecting lubricating oil for Sabroe screw compressors

4.25 Cold-start system

4.26 Compressor protecting system, pos. 220 and 221

4.27 Oil cooling system and general piping layout

4.28 Liquid injection oil cooling

4.29 Thermosyphon oil cooling

4.30 Water-cooled oil cooling

6. Technical data

6.1 Data for compressor units

6.5 Operating limits

6.6 Selecting electric motor

6.7 Motor dimension

6.8 Motor selection and starting torque

6.9 Motor;compressor torque

6.11 Emergency stop

6.13 Noise data

6.14 Noise data for SAB 193-233-283

6.15 Vibrations and test pressure levels

Covers vibration data standards and test pressure requirements.

6.15.1 Vibration data for compressors (all compressor types)

6.15.2 Test pressure levels for standard compressors and components

Details standard pressure test levels for compressors and components.

7. Installation instructions

7.1 Installation

7.2 Safety precautions

Emphasizes reading safety precautions before installation.

7.4 Installation and first start-up procedure

Covers mechanical, electrical, and safety equipment installation requirements.

7.6 Personnel requirements

7.9 Safety equipment

Lists essential safety equipment to be used during installation.

7.11 Preparing the mounting site

7.13 Lifting and loading instructions

7.14 Unpacking and inspection

7.16 Moving the equipment to the mounting site

7.17 Alignment of compressor and unit

Explains the importance of proper alignment for service life and vibration.

7.18 Alignment of unit against foundation

Details how to mount the unit evenly on supports and align it.

7.19 Alignment of compressor and motor

Describes the process of aligning the compressor and motor shafts.

7.20 Laying the unit foundation

7.21 Mounting directly on the foundation

7.22 Mass damping between unit and building

7.23 Damping using vibration dampers

Details using calculated vibration dampers for efficient vibration damping.

7.24 VSD equipment

7.25 Calculation of centre of gravity, support reactions and tipping angle

7.26 Instruction for mounting of coupling

Details the procedure for mounting the coupling between motor and compressor.

7.27 BPU coupling installation procedure

Provides a step-by-step guide for installing BPU couplings.

7.28 Piping connections

Gives recommendations for pipe layout to avoid stress from temperature changes.

7.29 Connecting electricity supply

Covers electrical connection procedures, safety, and motor connection.

7.30 Pressure testing

Details the procedures for pressure testing the refrigeration plant.

7.31 Evacuation of the refrigeration plant

Explains how to evacuate the plant to remove air and moisture.

7.32 Oil charging

7.33 Final installation check

Provides a checklist for final checks before commissioning the unit.

10. Operating instructions

11. Maintenance instructions

11.1 Safety precautions

Emphasizes reading safety precautions before performing maintenance.

11.2 Maintenance of compressor unit

Details daily, periodic, and major overhaul tasks for compressor unit maintenance.

Daily Maintenance Tasks

Periodic Maintenance Tasks

Major Overhaul

11.3 Stopping routine

Describes procedures for stopping and starting the compressor during standstill.

11.4 Long-term storage

11.5 Visual inspection

11.6 Measures to be taken

11.7 General rules for use of lubricating oil in refrigeration compressors

11.8 Assessing the oil

11.9 Visual assessment

11.10 Analytical evaluation

11.12 Charging compressor with lubricating oil

Provides instructions for charging the compressor with lubricating oil.

11.13 Oil charge

12. Faultfinding instructions

12.1 How to carry out faultfinding

Explains when faultfinding is necessary and the importance of a systematic approach.

12.2 Troubleshooting

Provides tables for common refrigeration plant and compressor unit issues and solutions.

14. Transport instructions

14.1 Safety precautions

Highlights dangers and safety measures during transport.

14.2 Transport data

14.3 Personnel requirements

14.4 Handling of compressor and unit

Details how to handle the compressor and unit, including lifting eye usage.

14.5 Loading instructions

Provides critical warnings and instructions for lifting and loading the unit.

14.6 Preparations before lifting

14.7 Loading

14.8 Transport instructions

14.10 Unpacking and inspecting the unit

14.11 Moving the equipment to the mounting site

14.12 Storage

15. Commissioning instructions

15.1 Safety precautions

Emphasizes reading safety precautions before commissioning.

15.2 Preparations for commissioning

Covers final installation checks, personnel requirements, and training.

15.3 Preparations on the mounting site

Details final checks of the plant, piping, electrical, and insulation.

15.4 Evacuation and charging of refrigerant

Ensures correct evacuation pressure and refrigerant charging.

15.5 Start-up

Instructs on plant start-up and final alignment checks while warm.

15.6 Commissioning set

15.7 Commissioning checklist

Provides a checklist for actions before and after start-up.

18. Final disposal

18.1 Safety precautions

Highlights safety precautions before dismantling and disposal.

18.2 Waste disposal

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Johnson Controls Sabroe SAB 283 L - User Manual

Table of Contents

Questions and Answers

Johnson Controls Sabroe SAB 283 L Specifications

Summary

2. Signs and warnings

2.5 Labelling of explosion-proof equipment

2.8 Signs

3. Safety precautions

3.1.1 Application of the screw compressor

3.2.1 General precautions

3.2.2 Work area safety

3.2.3 During operation

3.2.4 Safety during maintenance and service

3.2.5 Electrical installations

3.2.6 Power supply

3.2.7 Lubricating oils

3.2.8 Refrigerants

3.2.10 F-gas regulation (fluorinated greenhouse gases)

3.2.11 First aid for accidents with ammonia

3.2.12 First aid for accidents with HFC;HCFC

3.2.13 Protecting the operator as well as the environment

4. Technical description

4.1 Description of the screw compressor

4.4 Control system

4.5 Compressor

4.6 Variable speed drive (VSD)

4.7 Compressor lubrication system

4.12 Compressor oil separation system

4.16 Compressor hydraulic system

4.17 Compressor oil cooling systems

4.18 Liquid injection oil cooling

4.19 Requirements for ambient temperatures and humidity

4.21 Selecting lubricating oil for Sabroe screw compressors

4.25 Cold-start system

4.26 Compressor protecting system, pos. 220 and 221

4.27 Oil cooling system and general piping layout

4.28 Liquid injection oil cooling

4.29 Thermosyphon oil cooling

4.30 Water-cooled oil cooling

6. Technical data

6.1 Data for compressor units

6.5 Operating limits

6.6 Selecting electric motor

6.7 Motor dimension

6.8 Motor selection and starting torque

6.9 Motor;compressor torque

6.11 Emergency stop

6.13 Noise data

6.14 Noise data for SAB 193-233-283

6.15 Vibrations and test pressure levels

6.15.1 Vibration data for compressors (all compressor types)

6.15.2 Test pressure levels for standard compressors and components

7. Installation instructions

7.1 Installation

7.2 Safety precautions

7.4 Installation and first start-up procedure

7.6 Personnel requirements

7.9 Safety equipment

7.11 Preparing the mounting site

7.13 Lifting and loading instructions

7.14 Unpacking and inspection

7.16 Moving the equipment to the mounting site

7.17 Alignment of compressor and unit

7.18 Alignment of unit against foundation

7.19 Alignment of compressor and motor

7.20 Laying the unit foundation

7.21 Mounting directly on the foundation

7.22 Mass damping between unit and building

7.23 Damping using vibration dampers

7.24 VSD equipment

7.25 Calculation of centre of gravity, support reactions and tipping angle

7.26 Instruction for mounting of coupling

7.27 BPU coupling installation procedure

7.28 Piping connections

7.29 Connecting electricity supply

7.30 Pressure testing

7.31 Evacuation of the refrigeration plant

7.32 Oil charging

7.33 Final installation check