Question about Ingersoll Rand SS5L5 Ir Electric Stationary Air Compressor 5HP. 60 Gallon Single Stage Vertical

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IR SS5L5 Won't reach shut off pressure

I drained the air pressure from my compressor down to around 10psi to drain the condensate. Once I turned the compressor back on it would not get to the shut off pressure of 135psi.

I checked the intake and am feeling suction and I took the line off of the output to tank and feel air blowing out from output of motor. So I know basic operation of the motor is intact.

Because I don't pay alot of attention while the motor is running before, I now hear a hissing sound from the pressure switch (this may always have been the case previously) which I think comes from the unloader valve. Is this supose to be hissing while the motor is running or only after it shuts off to relieve the pressure in the line from the motor to tank?

Both relief valves seem to be functioning. The check valve seems to be working because whatever pressure is in the tank, it stays at this pressure.

What are my next steps? I priced a new pressure switch and it is quite expensive so I want to make sure I know that is the culprit before buying.

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It sounds as though your unloader valve is stuck or broken. I would try and repair it but otherwise you will have to bite the bullet and get a new switch assembly I think. As you have just been working on the tank it might just be a bit of debris dislodged and stuck in the unloader valve. The unloader should only hiss just after switch off weather by automatic shut off or by manual shut down.

Posted on Jun 06, 2010


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Were do i get the manuel for model number ph3 12r03 is the model number were or how do I drain the water and can you send me a manual

Here is the link to the manual:

Here are those particular instructions:

Compressor Indicator

The " " icon will light up on the control panel display when the compressor turns on. The " " icon will turn off when the compressor shuts off.

Emergency Condensate Holding Tank

When the room temperature is low and the indoor humidity is high, the air conditioner may not be able to evaporate some of the moisture fast enough. When this happens, the water will accumulate in an emergency condensate tank inside the unit. Once the emergency condensate tank is full, the unit will automatically shut off and the " " will appear on the control panel display. To empty the condensate tank, unscrew the screw plug at the bottom back of the unit. You will need a small pan, approximately 1" high to catch the water coming out of the condensate tank. Once the condensate tank is drained, the unit will begin working within a few minutes. The emergency condensate tank holds approximate
ly 1.5 Liters of water.

Another option is to purchase a small hose from a hardware store that can fit around the 5/8" drain plug on the back of the unit and drain the unit into a gravity drain or larger pan for continuous drainage.

To resume operation quickly, empty the water container according to the following steps:

1. Turn the unit off. Do not move the unit when the water container is full.

2. Place the drain pan accessory under the drainage port at the back of the unit.

3. Remove the screw plug from the drain hole. The condensate water will drain out automatically. When the drain pan is full, screw the screw plug back onto the drainage hole to stop the water flow. Empty the drain pan. Repeat until all the water is emptied.

Once the water container has been emptied, screw the plug back onto the drain hole. Do not allow the
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1 Answer

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Please rate

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