The check valve prevents tank air from back flowing to the pump. To test the check valve, let the air compressor fill the tank until the pump shuts off. The pull the ring on the safety valve to bleed air from the tank to reach the cut-in pressure, so the pressure switch tires to restart the motor to refill the air tank.
Check The Compressor Switch If Air Compressor Won’t Turn On. When my Campbell Hausfeld compressor stopped working, the power switch couldn’t turn on the compressor. The compressor will not start when an in-line fuse inside your air compressor is faulty. Porter-Cable Air Compressor Won’t Turn On. After using a portable PORTER-CABLE air compressor for home garage applications, the pressure switch had some faults.
Knowing how aggravating it is, here are some reasons your air compressor will not start, and a few of the things you need to look at in the hope that understanding them will help you get your air compressor back on track and working effectively. Depending on how much time you want to spend on this compressor George, you can pick up a low-cost 1 HP compressor for under $100 dollars these days, and you could either replace the entire power train of your existing compressor with the new one, or, use the existing compressor only as an extra tank, and fill the tanks on both air compressors from the new one. Turn off the compressor, dump all the air from the tank, close the tank drain, and start the compressor.
If your air compressor uses fuel instead of electricity, you should always check whether the tank is full or at least enough oil to get the air compressor running. Check the pressure switch via a multimeter to determine if, when the air compressor has shut off at 95 PSI, that power is not still passing the pressure switch to the motor circuit. A larger air compressor will have its valve located near the compressor gauge.
The reason for that is if the pressure switch is set with a cut-in pressure that is below the air pressure currently in the compressor tank, then your compressor pressure switch has not tripped to on, no power is flowing to the air compressor motor, so the motor cannot start. Even if the air pressure in the tank is below the air compressor cut-in pressure setting, part of the diagnosis as to why it won’t start is to empty all of the air out of the compressor tank. Drain the air tank by attaching an air tool or blowgun to the hose and blowing off all the air, you can drain the compressor tank by opening the tank drank valve and allowing all air to blow out the tank drain which you should do regularly anyway, or you can empty the compressor tank and test your air compressor pressure relief valve at the same time, by pulling on the PRV ring.
Fixing an air compressor that won’t turn on can seem like a daunting problem to try to tackle as a DIY. Read on to find out the common problems that cause an air compressor not to turn on and the steps you can take to fix your air compressor when it doesn’t start. Replacing the air compressor regulator is one of the easiest fixes for an air compressor that won’t turn on. If you have an air compressor that won’t start, consider checking these causes and doing these fixes on your own before paying for a whole new air compressor.
how to fix an air compressor that won’t start Related Question:
What would cause an air compressor to not turn on?
The first and most obvious thing to do when your compressor won’t start is to make sure that the unit is receiving power. It is always possible that a fuse has been blown or that a breaker has been tripped. If such issues occur regularly, you should have an electrician take a look.
How do I reset my air compressor?
To reset your reciprocating air compressor, allow time for the compressor to cool down and then push the reset button before attempting to turn the unit on again.
How do I get my air compressor to kick on?
Setting the cut-out pressure Turn clockwise to increase (if you want a higher maximum pressure) or count-clockwise to decrease (if you want a lower maximum pressure. Open the drain valve and wait until the pressure drops low enough to start the compressor. Close the drain valve.
Is there a fuse for the air compressor?
Blown Fuse or Tripped Breaker Some air compressors have reset switches while others will have in-line fuses that need to be checked. To find them follow the line of power from the air compressor back to the outlet. If you find a blown fuse or tripped breaker go ahead and either replace the fuse or reset the breaker.
Can an air compressor be repaired?
Air compressor repair can be simple. The air compressor unloader valve is what makes the “psssssst” sound when the motor shuts off after reaching operating pressure. It’s actually venting the residual pressure from the compressor head so the motor doesn’t have to work as hard on the next startup.
Is there a reset button on compressor?
A reset button can be found inside the air conditioner’s compressor. Typically, the button is red in colour and modest in size. 1. First, you have to locate the reset button.
How does an air compressor pressure switch work?
When the specified system pressure is reached, a diaphragm inside the pressure switch pushes against a mechanism which forces the electrical contacts apart, breaking the circuit and stopping the motor. At the same time, the pressure relief valve opens and relieves back-pressure caught between the pump and check valve.
Is it worth repairing an air compressor?
On the other hand, replacing your compressor may be the most viable solution in circumstances like: If it has broken down once, then it is more likely it will happen again. Compressors are becoming more energy efficient all the time, so the cost of a new unit could soon pay for itself in electricity savings.
Is it worth it to fix compressor?
The verdict. As a rule of thumb, if replacing the compressor will cost you about half the price of the refrigerator you have, then it will be much wiser to replace the entire fridge itself than having it repaired.
What causes a compressor to lock up?
Some of the causes for car air conditioning compressor locking up include incorrect or low quality refrigerant being used, low coolant levels, and improper lubrication. You need to get your car checked out before any issue worsens.
