This is a question that a lot of people have. Why does my air compressor keep shutting off? The answer is. If your air compressor is shutting off unexpectedly, the most likely reason is because of short cycling.
This means the compressor is starting up and stopping too frequently, overheating and damaging the compressor. But don’t worry, this doesn’t mean that your compressor is broken. However, it’s essential to address the short cycle so that you can keep the compressor running for as long as possible.
So, if you’re serious about knowing more about factors that are cause the compressor to shut off and want to know how to troubleshoot this problem, then read on.
Reasons for short cycling and how to fix it.
As I mentioned above, short cycling causes the air compressor to keep shutting off. You can do a few things to help prevent this from happening and keep your compressor running longer.
Taste the Leaks
The most obvious reason for a compressor to short cycle is if there’s a leak in the system. A small leak can cause the air compressor to cycle more frequently, so make sure all connections are tight, and there are no holes in the air hose.
You can taste the leaks by spraying a soapy water solution on the fittings and hoses. If bubbles form, then you know you leak.
Check the Valve Settings
Valves are responsible for regulating the amount of air into the compressor. If the valves are not set correctly, it can cause the compressor to short cycle. You can adjust the valves by turning the knob on the compressor.
Check the overload protection device
This is a safety feature built into the compressor, and it’s responsible for shutting the compressor off if it starts to overheat. If the overload protection device is faulty, it will keep shutting the compressor off, even if it’s not overloading.
You can test the overload protection device by disconnecting it and turning the compressor on. If the compressor starts up, the overload protection device is faulty and needs to be replaced.
If the compressor isn’t properly lubricated, it can overheat and cause the compressor to short cycle. You can check the lubrication level by removing the oil cap and checking the level. If the level is low, then you need to add more oil.
Other Issues that might Cause the Compressor to Shut Off – How to prevent the air compressor from shutting off.
Short cycling can cause the compressor to shut off, but a few other factors might affect it. Below are some of the reasons for preventive measures.
Faulty Pressure switch
Pressure switches are used in air compressors to protect the equipment by shutting it down when a preset pressure is reached.
If this pressure switch becomes faulty, it may allow the compressor to run continuously or shut off too soon, which can damage the compressor.
To ensure your pressure switch is functioning correctly:
- Check the pressure setting and make sure it is correct.
- Check the condition of the switch contacts and clean them if needed.
- Check for voltage at the switch and correct it if needed.
- Replace the switch if it is faulty.
Dirty air filter
When the filter becomes clogged with dust and dirt, the compressor won’t receive enough air to function properly You should clean the air filter regularly to keep it free of debris.
To clean your air filter:
- Remove the air filter from the compressor.
- Rinse the filter with clean water.
- Allow the filter to air dry.
- Reinstall the air filter.
Low oil level
When the air compressor oil level gets too low, it can’t lubricate the compressor’s moving parts properly. That’s why keeping an eye on the oil level and adding oil as required is essential.
You can quickly check the oil level in the insight glass on the side of the compressor. If the oil is too low, follow the below steps to add oil
To add oil:
- Unplug the compressor.
- Clean the area around the oil cap.
- Remove the oil cap.
- Add oil to the compressor.
- Replace the oil cap.
- Plug in the compressor.
The wrong type of oil is being used
If the oil isn’t compatible with the compressor, it can cause excessive wear and tear, eventually leading to shutdowns.
Different types of air compressors require different types of oil, so it’s important to check the owner’s manual before adding oil to the machine. If you don’t have a manual, contact the manufacturer for the correct type of compressor oil to use.
You can also contact me. I will guide you. This is a crucial aspect and should not be overlooked. Continuing to use the wrong type of oil can eventually cause the air compressor to fail completely.
Ambient temperature too high or not enough ventilation:
The compressor needs a certain amount of airflow to keep it cool, and if the ambient temperature is too high or there’s not enough ventilation, it can cause the compressor to overheat and shut down.
To ensure proper ventilation:
- Make sure there is plenty of space around the compressor for air to flow.
- Make sure the compressor is in a well-ventilated area.
- If needed, use a fan to circulate air around the compressor.
- Contact the manufacturer for a compressor cooler if the ambient temperature is too high.
Thermostatic valve not working Dirt/obstruction in oil lines :
The thermostatic valve is used to regulate the temperature of the compressor. If the valve is not working properly, it can cause the compressor to overheat. You can test the thermostatic valve by unplugging the compressor and removing the valve. If you can blow through the valve, it’s not working properly and needs to be replaced.
To ensure the thermostatic valve is working:
- Check valve for dirt or obstruction.
- Clean the valve if needed.
- Check the oil lines for dirt or obstruction.
- Clean the oil lines if needed.
- Verify that the valve is properly adjusted.
In some situations, a low voltage can also cause the compressor to shut down. When the voltage drops below a certain level, the compressor will not have enough power to operate properly.
You can check the voltage by checking the voltage at the receptacle where the compressor is plugged in. If the voltage is low, you may need to install a voltage stabilizer.
I have covered some of the most common reasons why your compressor might be shutting off. I hope this guide will help you to troubleshoot the problem and get your compressor back up and running.
If you are still having problems or have any questions, you can contact me. For contact, check the contact page of my website.
FAQS On Air Compressor Keep Shutting Off
What are the signs that an air compressor needs to be replaced?
There are several signs that an air compressor needs to be replaced. Some of the most common signs are:
The compressor is not operating properly.
The compressor is making strange noises.
The compressor is overheating.
The compressor is leaking oil.
The compressor is not producing enough air.
The compressor is not turning on.
The compressor is very old.
The compressor has been damaged in a fire or flood.
Is it worth repairing an air compressor?
Yes, it is often worth repairing an air compressor. Air compressors are not very expensive to repair, and the cost of repairing a compressor is usually much less than the cost of replacing a compressor.
However, if the compressor is very old, damaged in a fire or flood, or is not covered by a warranty, it may be more cost-effective to replace it.
How often should an air compressor be replaced?
There is no set time frame for how often an air compressor should be replaced. It all depends on how often it’s used and the type of compressor. Some compressors may only need to be replaced every 10 or 15 years, while others may need replaced every 3 or 4 years.
Can I run my air compressor without oil?
No, you should never run an air compressor without oil. If the compressor does not have enough oil, it will produce excessive heat due to the friction between the moving parts. It can lead to the compressor overheating and eventually causing damage.