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What causes a high airend temp and a t-1 failure on an IR compressor?

Problem is as stated. Tried cleaning out cooler as best as we can without complete dis-assembly but still shutting down. model number SSR-EP255E, Serial # KE249U95321

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Posted on Nov 03, 2009

SOURCE: How do I obtain a service manual for the COMPLETE

not a service manual but a manual. To get the service manual you will have to contact the manufacturer, links in the manual www.iraindco.com/PDF/CENTAC/CENTAC.pdf

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  • 210 Answers

SOURCE: SSR-EP75 Ingersoll Rand SERIAL # F15525U95286 320

Mike, an EP 75 Should not use more than 3 to 5 parts per million of oil. Your oil issue sounds like you have a separator that needs replacing or a plugged scavenge line. The separator is located in the oil tank. the scavenge line and orifice come from the bottom of the separator filter to and Thur the oil tank lid. then to the air end. In this line approx. 1ft from the lid should be the orifice. make sure its clean. your high air end temp can be from several different problems. 1- low oil level from separator or scavenge line plugged. 2- A plugged oil cooler. Dirt and debris pushed against the cooler by the the cooling fan. This needs to be cleaned using a pressure washer. Wash in the opposite direction of air flow. Be careful with the pressure washer. You can damage the cooler. Low oil level and dirty coolers are the most common problems when getting high air end discharge temp shutdowns. However you could also have a bad thermal valve located where the three cooler lines come together. you will have to remove one line and 4 bolts. inside is the thermal element. You may also have a bad HAT switch (high air end temperature). It is located in the end of the air end and simply unscrews. I do not know of any adjustment.

Posted on May 31, 2011

  • 33 Answers

SOURCE: 7.5 tas high airend temperature

1. Check your oil level, top up, or totally replace it

2. Check your cooler (Radiator looking thing) blow it out with a blow gun

3. Check your thermo valve (may need replacing)

4. Is the room that your compressor is in very warm, ambient air is a big factor in the running of your compressor

5. Do you have all the panels fitted to the machine? These are needed to aid airflow past your air-end

These are the main causes of high air end temperature. It may just need a good service

Hope this helps

Posted on Aug 30, 2012

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1 Answer

Ingersoll rand compressor model no 75i high airend discharge temperature trip why


Wash the cooler first. Then replace thermostat if washing cooler d't take care of the problem.oesn

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This problem could be due to several items. Low oil level, Bad temp.probe. Cooler stopped up or dirty and not allowing enough air flow thru it or maybe a thermostat. Also temp. in compressor area can be causing problem also.

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What cuases high a/e discharge fault on ingersol rand air compressor


Dirty coolers are always associated with high discharge temps,always make sure your coolers are clean
compressor oil filters being clogged can also raise your temp n cause the unit to over heat,and on the much bigger machines if the compressor oil pump fails then you will have severe over heating as the oil flow to the cooler is assisted by the pump!!things like regulating pressure should always be adjusted to the machines specs so it doesn't over pressurize n put load on your airend while the engine is at idle.

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1 Answer

7.5 tas high airend temperature


1. Check your oil level, top up, or totally replace it

2. Check your cooler (Radiator looking thing) blow it out with a blow gun

3. Check your thermo valve (may need replacing)

4. Is the room that your compressor is in very warm, ambient air is a big factor in the running of your compressor

5. Do you have all the panels fitted to the machine? These are needed to aid airflow past your air-end

These are the main causes of high air end temperature. It may just need a good service

Hope this helps

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My air compressor show continusly the alarm NO CONTROL POWER


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Get yourself a temperature gun and check a couple things:
1) Measure the oil injection temperature to the airend. This is a line going into the bottom side of the airend. 2) Measure the discharge temperature from the airend (this should be the same reading as the temperature gauge/readout on the compressor, but check to be sure)
You should get a temperature rise of about 25-30 degrees F over the airend. If you have more rise, you probably have an oil restriction: try an oil filter change.
If your oil injection temp is more than 160 degrees F or so, check the operation of the thermostatic valve. The thermo valve is a T shaped valve in the oil circuit. The oil line out of the bottom of the sump probably goes to a tee which splits flow to the cooler and the thermo valve. The oil goes through the cooler then to the other side of the thermo valve. The thermo valve should then mix the hot oil from the sump and the cool oil from the cooler to maintain the injection temp in the 150-160 degree range.
If you have cool oil coming from the cooler (should be maybe 140 F or less, and the injection temp is high, the thermo valve is bad. You can get a thermostat kit from your vendor to repair. If you've replaced the cooler, this thermo valve is probably the problem.

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1 Answer

SSR-EP75 Ingersoll Rand SERIAL # F15525U95286 320 CFM i CONTINUE TO ADD OIL GOES OUT ON HIGH AIREND TEMP. SOMEONE TOLD ME THERE WAS AN ADJUSTMENT FOR THIS. CAN YOU TELL ME WHAT TO...


Mike, an EP 75 Should not use more than 3 to 5 parts per million of oil. Your oil issue sounds like you have a separator that needs replacing or a plugged scavenge line. The separator is located in the oil tank. the scavenge line and orifice come from the bottom of the separator filter to and Thur the oil tank lid. then to the air end. In this line approx. 1ft from the lid should be the orifice. make sure its clean. your high air end temp can be from several different problems. 1- low oil level from separator or scavenge line plugged. 2- A plugged oil cooler. Dirt and debris pushed against the cooler by the the cooling fan. This needs to be cleaned using a pressure washer. Wash in the opposite direction of air flow. Be careful with the pressure washer. You can damage the cooler. Low oil level and dirty coolers are the most common problems when getting high air end discharge temp shutdowns. However you could also have a bad thermal valve located where the three cooler lines come together. you will have to remove one line and 4 bolts. inside is the thermal element. You may also have a bad HAT switch (high air end temperature). It is located in the end of the air end and simply unscrews. I do not know of any adjustment.

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