What Factors May Make The Micro Switch Wrong?

Nov 20, 2021

Micro switches are very simple and usually do not encounter a lot of trouble in operation.

However, in some cases, it may malfunction and cause some concerns.

The following questions are the most common and frustrating questions:

1. The stuck mechanical switch cannot be turned over while charging

2. Wiring problems with the switch or nearby wires

3. The failure of the overall structure will affect the flow

4. The current problem of the entire assembly

5. Deviation from the standard position may cause malfunction

6. A circuit breaker that may cause poor switch operation to be tripped

When this happens, it is important to know how to test your switch, which we will discuss in the next section. Fortunately, these steps are not difficult.

If your micro switch fails or you think it may be about to fail, it is important to test it correctly.

In this test, you only need to take a few steps:

Turn on the area near the switch-your micro switch will be located under the vehicle chassis or body. For example, the pedal switch is located under the dashboard near the pedal, and you must open these areas to expose them and find the switch. Doing so will make it easier to replace it and get the best upgrade results.

Look for micro switches-these switches are usually very small and black in color and have two wires connected. They are on/off switches with a very simple design. If you are not sure, check the schematic of the shopping cart to see where they are. At this point, you can set up the test by ensuring that the shopping cart's switch is functioning properly.

Connect the voltmeter-set the continuity or OHMS of the voltmeter (whichever setting you have because both read similar power flow) and determine the 36 volt side of the switch. It should be marked directly on the body of the switch to make it easy to trigger. Usually, this is the input end of the switch, which may be labeled, rather than the 36 volt end of the switch.

Disconnect the switch-the two wires leading to the switch are positive and negative. Identify them, then first remove the positive wire (usually red), and then move it away from the negative wire. You may need to tape it to the side of the shopping cart or the grounded part to avoid electric current. Now, remove the negative wire and tie it tightly in a similar way. Place the probe of the voltmeter on the correct terminal.

Use a voltmeter to test-at this point, you should have obtained a reading from the micro switch. It should show continuity, which means current is flowing. If you cannot see continuity when connecting the voltmeter, check the mechanical switch (a small metal part) and slide it to another position. In many cases, this should restore continuity.

Tap the switch-manually push the metal switch mechanic to activate the switch. You should see the power of the voltmeter switch to "no continuity" or something similar. If this is the case, your switch is working properly. However, if continuity is maintained or you can never get continuity, there is a problem that must be solved here to repair the switch.

Reset switch-return the switch to its original position, and then remove the voltmeter probe. Reconnect the wires to the switch, and then close the hood or test the area of the switch. Or, if you plan to add a new switch to replace the old switch, you may want to keep it open. This step usually depends on the person conducting the test.

At this point, you or an expert can replace or repair the micro switch.

We usually recommend that you find an expert who can handle this process for you.

Doing so can prevent you from encountering unexpected failures, such as placing the switch in the wrong way and causing it to malfunction.