Ingersoll-Rand RS55i - User Manual

Questions and Answers

A
amy53Aug 10, 2025
What to do if my Ingersoll-Rand Air Compressor will not start?
- J
  Jessica StevensAug 10, 2025
  If your Ingersoll-Rand Air Compressor won't start, there could be several reasons. First, check that the power supply to the compressor is switched on; if it is, contact a qualified electrician. Another potential cause is controller failure, in which case you should check the supply to the controller and replace it if necessary. Finally, a starter failure could be the issue; in this case, isolate the supply, lock it off, tag it, and replace the failed component, or contact your local Ingersoll Rand representative.
M
Michael HermanAug 17, 2025
Why does the pressure produced by my Ingersoll-Rand Air Compressor is too high?
- R
  rshafferAug 17, 2025
  If the pressure produced by your Ingersoll-Rand Air Compressor is too high because the speed isn't reducing as demand decreases, the controller settings may be incorrect; check and modify them. Alternatively, the pressure transducer may be faulty, incorrectly calibrated, or not receiving a pressure signal; recalibrate or replace it. A drive settings fault could also be the cause, in that case, contact your local Ingersoll Rand representative.
H
hannah34Aug 26, 2025
What to do if my Ingersoll-Rand Air Compressor will not meet pressure required by system?
- T
  Tyler MunozAug 26, 2025
  If your Ingersoll-Rand Air Compressor isn't meeting the required system pressure, several factors could be at play. The inlet valve might not be opening fully, the separator element could be dirty or collapsed, pipes or hoses might be blocked or collapsed, or the cooler core could be blocked. Additionally, the minimum pressure check valve might not be functioning correctly, or equipment between the compressor and the customer measuring point could be causing a pressure drop or loss. In each of these cases, repair or replace the faulty component. Review system requirements.
R
rosefriedmanSep 1, 2025
What to do if my Ingersoll-Rand RS55i Air Compressor is stopped and will not restart?
- L
  Lynn CallahanSep 1, 2025
  If your Ingersoll-Rand Air Compressor is stopped and won't restart, it could be because the controller has tripped the compressor and hasn't been reset. See Table 4. Another possibility is that the emergency stop button has been pressed and not released; in this case, identify the reason why, repair the fault, disengage the button, and reset the controller. Even if the emergency stop button has been pressed and released, the controller may still need to be reset after the fault is repaired.

Summary

Safety

Air Compressor Maintenance

Maintenance Chart

Recommendations for performing maintenance based on controller, hourly, or annual intervals.

Routine Maintenance

Checking Coolant Level

How to check the coolant level using the sight glass, ensuring proper running time and pressure.

Inspecting Separator Tank; Pressure System

Removing; Installing Air Cooled Cooler

Adding Coolant

Step-by-step procedure for adding coolant, including safety precautions and rechecking the level.

Changing Coolant Filter

Cleaning;Checking Scavenge Screen

Cleaning Water Cooled Cooler (For Both Clean & Harsh Water Options)

Draining Coolant

Checking Separator Element

Checking Minimum Pressure Check Valve (MPCV)

Changing Separator Element

Detailed instructions for removing, cleaning, inspecting, and installing a new separator element.

Changing Air Filter

Cleaning Air Cooled Cooling System

Troubleshooting

Integrated Dryer Maintenance

Cleaning Condensate Drains (Timed Drains Only)

Testing Condensate Drains (No-Loss Drains Only)

Troubleshooting Condensate Drains (Electronic Drains Only)

Basic troubleshooting information for electronic condensate drains, including common symptoms and remedies.

Disassembling the Integrated Dryer

Notice that the dryer disassembly must be performed by a refrigerant specialist, with refrigerant recovery requirements.

Decommissioning the Integrated Dryer

Ingersoll-Rand RS55i Specifications

General

Model	RS55i
Type	Rotary Screw
Horsepower	75 HP
Power	55 kW
Maximum Pressure	125 PSI
Air delivery	21.3 CFM
Pressure	125 PSI
Air Delivery at 90 PSI	21.3 CFM
Max Pressure	125 PSI
Phase	3