Ingersoll rand irn-20tas-150-L a 68 error code (emergency stop) unit will not start. help please!

try the electrician page and check that you have very good grounding. sometimes the poor ground will give false reading of high voltage because of less equal grounding.

Pull out the e-stop button. Press the reset button on the controller.

Gear timming in line sander

The above link may help as the unit is similar to the Central Pneumatic Straight Line Sander

Probably a faulty non return check valve, when the unit reaches pressure air in the delivery pipe is vented down at the pressure switch. If the check valve is passing back this will cause the unit to try to start against a pressure causing it to pull high amps and trip. If there is a constant hiss coming from the pressure switch when the unit stops it will be the non return valve. There should be a short hiss of air when units stops If there is no hiss at all when the unit stops it could be a faulty pressure switch. If it is a quick fix would be to create a small leak on the delivery pipe to vent the line down.

Sounds like either the emergency stop switch is faulty or fuel filter.

If this type of compressor is run for any length of time in the wrong direction you will do damage for sure now if this unit is shut down while it is loaded (producing air) it will push lubricant out of the inlet filter most of the time people hit the emergency stop button to shut it done which is wrong the compressor should be unloaded first which when unloaded the inlet valve will be closed which then the compressor will be running unloaded and can now be shut down using the off button or switch not sure which one you have other reasons why this could happen failing load/unload solenoid usually the vent is plugged or bad minimum pressure check valve

I know you have checked voltage. However please remove the fuses for control power and check,also check fu4 and 5 16volt fuses. next check power on the controller input. Don't remember terminal # but if you look in electrical cover removed to gain access, a wiring schematic will be affixed to it. I think it's on j5 terminal 36 110volts. But please check the schematic first. If you have power at the input terminal I suspect the controller is bad but continue with the following checks. If no power at terminal 36 check the hat (High Air Temperature) switch. Its located on the end of the airend and about 1/2 inch flex connected.If the hat switch is good check the emergency stop contacts. Note the power lite picks up voltage before the emergency stop and hat switch. So even though the lite is on one of these switches may be bad.

Unfortunately, that drive is pretty well "cleansed". I-R is not like many compressor manufacturers who use a standard Siemens or Allen Bradley drive. They use something obscure and modify it so that you can't get outside support. You will have to go to a IR distributor.

As a side note, the Unigy series was plagued with problems. They had a 120% failure rate, meaning on average that each one failed more than once during the warranty period.

According to the information you provided your looking at a 10 HP motor at three phase. Do you have three phase at your location? If not I would look into getting a single phase compressor. If you do want to get it going I would notify your local IR dealer so they can get you the right Model number, RPM, Pulley and Motor Frame Size to match your unit.

Please read below....Jim...if this helped you please send me a positive response...Thanks!


Ingersoll-Rand Type-30 Electric-Driven Two Stage Horizontal Air Compressor - 120 Gallon - Fully Packaged IR 2545E10VFP

• Designed for heavy shop or industrial use, Ingersoll-Rand Two-Stage electric air compressors provide the quality and performance that are ideal for most applications and users, including: automotive service and body shops; fleet maintenance; machine shops; production and manufacturing lines; construction; wood working shops; dry cleaners; car washes; maintenance/repair shops and farms.
• Durable cast-iron, two-stage design offers extended pump life for years of trouble-free service 175 PSI maximum operating pressure
• 100% continuous duty for tough applications
• Automatic start/stop control/pressure switch operation
• Includes motor starter, oil sight glass (10-15 HP only), manual drain and ASME tank
• 10HP, 3 Phase 200, 230 or 460 Volts
• 120 gal, horizontal tank
• 35 ACFM @ 175 PSI

There are alot of resources to obtain this. I would search the net or you can contact ingersoll. the 800 # on the unit would be a good place to start.