Does your compressor not perform well or make strange noises? Maybe the compressor doesn’t turn on or suddenly trips? Do you want to quickly test the compressor without the help of others? Here are the steps that can help you test the compressor without dismantling it. These steps do not require special tools to prevent accidents.
First, prepare a multimeter, paper, and pen to record the test results. Safety first! Before starting to test, make sure that the power to the compressor is turned off. Ensure that the capacitor is discharged by shorting its terminals with an insulated screwdriver. Put on safety gloves and glasses to protect yourself.
A faulty compressor will likely cause the motor to overheat and may cause a tripped breaker. To test the compressor motor, use a multimeter to measure the resistance between each of the three terminals. A normal resistance reading should be between 1 and 10 ohms. If the resistance is too high or too low, it indicates an open or short circuit in the motor windings, and the compressor must be replaced. Also, check the compressor body for any sign of oil leakage, cracks, or any physical damage that may indicate a problem with the compressor.
Visual Inspection for Physical Damage
Before performing any electrical or performance tests, it’s crucial to visually inspect the compressor for any signs of physical damage that could indicate potential issues. This visual assessment serves as an initial screening and helps identify obvious problems that may require immediate attention.
External Components
Begin by examining the compressor’s external components, such as the корпус, клеммы, проводка, и любые внешние трубопроводы. Look for cracks, dents, or corrosion that may have occurred during handling or installation. Ensure that all connections are secure and free from loose wires or frayed insulation. Also, check for any loose or missing bolts or brackets that could affect the compressor’s stability and performance.
Compressor Oil
In addition to inspecting the external components, check the compressor’s oil level and condition. Refer to the manufacturer’s specifications to determine the appropriate oil level for the specific compressor model. A low oil level can indicate leaks or insufficient lubrication, while excessive oil can lead to foaming and reduced performance.
Inspect the oil for any discoloration or impurities that may indicate contamination. Dirty or discolored oil should be replaced to prevent damage to the internal components.
| Oil Condition | Possible Issue |
|---|---|
| Milky or foamy | Water contamination |
| Dark or gritty | Wear or excessive heat |
| Metallic particles | Internal component failure |
Pressure Gauge Test
A pressure gauge test is the most common way to test a compressor. This test involves using a pressure gauge to measure the pressure of the compressed air in the compressor tank. The pressure gauge should be connected to the compressor tank’s pressure port. Once the pressure gauge is connected, the compressor should be started and allowed to run until the pressure in the tank reaches the desired level. The pressure gauge reading should then be taken. The pressure reading should be within the manufacturer’s specified range. If the pressure reading is outside of the specified range, the compressor may not be functioning properly and should be serviced.
Additional Details
To perform a pressure gauge test, you will need the following equipment:
| Pressure gauge |
| Air hose |
| Couplings |
Once you have gathered the necessary equipment, follow these steps:
- Connect the pressure gauge to the compressor tank’s pressure port using the air hose and couplings.
- Start the compressor and allow it to run until the pressure in the tank reaches the desired level.
- Take the pressure gauge reading.
- Compare the pressure reading to the manufacturer’s specified range.
- If the pressure reading is outside of the specified range, the compressor may not be functioning properly and should be serviced.
Capacitance Evaluation
Capacitance evaluation is a crucial aspect of compressor testing as it provides insights into the condition of the compressor’s motor and capacitor. The following steps outline the process of capacitance evaluation:
1. Safety First
Always ensure that the compressor is disconnected from the power source before proceeding with any tests.
2. Identify the Capacitor
Locate the capacitor within the compressor unit. It’s typically a cylindrical or rectangular-shaped component with two terminals.
3. Discharge the Capacitor
Using an insulated screwdriver, briefly touch both capacitor terminals together to discharge residual voltage. This is essential for safety.
4. Set Up the Multimeter
Set the multimeter to the capacitance measurement mode (typically denoted by a “μF” symbol).
5. Connect the Leads
Connect one multimeter lead to each capacitor terminal. Ensure polarity is correct, if applicable.
6. Evaluate Capacitance
Read the capacitance value displayed on the multimeter. Compare this value to the manufacturer’s specifications for the compressor. The following table provides a general guide for capacitor capacitance values:
| Compressor Type | Capacitance Range (μF) |
|---|---|
| Small (<5 hp) | 1.5 – 5 |
| Medium (5 – 10 hp) | 5 – 15 |
| Large (>10 hp) | 15 – 25 |
A significant deviation from the specified capacitance value indicates a potential issue with the capacitor or motor.
How To Test The Compressor
There are a few simple steps you can follow to test your compressor. First, check the oil level. The oil should be at the “full” mark on the dipstick. If the oil level is low, add some oil until it reaches the full mark.
Next, check the air pressure. The air pressure should be between 100 and 120 psi. If the air pressure is low, adjust the pressure regulator until it reaches the desired level.
Finally, start the compressor and listen for any unusual noises. If you hear any strange noises, stop the compressor and consult a qualified technician.
People Also Ask About How To Test The Compressor
How can I tell if my compressor is working?
You can tell if your compressor is working by checking the oil level, the air pressure, and listening for any unusual noises.
What should the oil level be in my compressor?
The oil level should be at the “full” mark on the dipstick.
What should the air pressure be in my compressor?
The air pressure should be between 100 and 120 psi.
