Hey there! As a supplier of Mobile Scissor Lifts, I've seen firsthand how important it is to keep these machines in tip - top shape. One of the most crucial aspects of maintaining a mobile scissor lift is checking its electrical connections. In this blog, I'll walk you through the steps to ensure your lift's electrical system is safe and functioning properly.
Why Check Electrical Connections?
Before we dive into the process, let's talk about why it's so important to check the electrical connections of a mobile scissor lift. Electrical issues can lead to a whole host of problems, from minor malfunctions to serious safety hazards. A loose connection can cause intermittent power loss, which might affect the lift's ability to operate smoothly or even cause it to stop working altogether. In some cases, faulty electrical connections can also lead to electrical fires, putting both your equipment and your operators at risk.
Tools You'll Need
To check the electrical connections of a mobile scissor lift, you'll need a few basic tools:
- A multimeter: This handy device will help you measure voltage, resistance, and continuity in the electrical circuits.
- A set of screwdrivers: You'll need these to remove any covers or access panels that are protecting the electrical connections.
- Safety gloves and goggles: Always prioritize safety when working with electricity. These will protect you from any potential electrical shocks or debris.
Step - by - Step Guide to Checking Electrical Connections
1. Power Down the Lift
The first and most important step is to turn off the power to the lift. This might seem obvious, but it's crucial to avoid any electrical shocks. Locate the main power switch on the lift and turn it off. If the lift is battery - powered, disconnect the battery cables as well.
2. Inspect the Exterior
Once the power is off, take a good look at the exterior of the electrical components. Check for any signs of damage, such as cracked insulation, frayed wires, or corrosion. Corrosion can be a big problem, especially in areas with high humidity or where the lift is used outdoors. If you notice any corrosion, you'll need to clean it off using a wire brush or a specialized electrical cleaner.
3. Check the Battery Connections
If your lift is battery - powered, the battery connections are a key area to inspect. Start by visually checking the battery terminals. Make sure they are clean and free of any corrosion. If there is corrosion, you can use a mixture of baking soda and water to clean it. After cleaning, dry the terminals thoroughly.
Next, use your multimeter to check the battery voltage. Set the multimeter to the DC voltage setting and touch the probes to the positive and negative battery terminals. A fully charged battery should read around 12.6 volts. If the voltage is significantly lower, it might be time to charge or replace the battery.
4. Examine the Wiring Harness
The wiring harness is like the nervous system of your mobile scissor lift. Carefully inspect it for any signs of damage. Look for cuts, abrasions, or loose wires. If you find any damaged wires, you'll need to repair or replace them. Make sure to use the correct gauge of wire and proper insulation to ensure a safe and reliable connection.
5. Test the Switches and Controls
The switches and controls on your lift are responsible for operating various functions, such as raising and lowering the platform. Use your multimeter to test the continuity of these switches. Set the multimeter to the continuity setting and touch the probes to the switch terminals. When the switch is in the "on" position, the multimeter should beep, indicating a continuous electrical path.
6. Check the Connectors
Connectors are used to join different electrical components together. Make sure all the connectors are securely plugged in and free of any dirt or debris. You can use a small brush or compressed air to clean the connectors if necessary. Check for any signs of overheating, such as a burnt smell or discoloration around the connector.
Common Electrical Issues and How to Fix Them
Loose Connections
Loose connections are one of the most common electrical problems in mobile scissor lifts. If you find a loose connection, simply tighten the screws or bolts that are holding the connection in place. Make sure not to overtighten, as this can damage the components.


Corroded Terminals
As mentioned earlier, corrosion can be a major issue. To fix corroded terminals, clean them using a wire brush or an electrical cleaner. After cleaning, you can apply a thin layer of dielectric grease to prevent future corrosion.
Faulty Wires
If you find a faulty wire, you'll need to replace it. First, cut out the damaged section of the wire. Then, strip the ends of the new wire and connect it using wire nuts or soldering. Make sure to insulate the connection properly using electrical tape.
Other Related Products
If you're interested in other types of scissor lifts, we also offer a range of great options. Check out our Crawler Scissor Lift Table With Legs, Mobile Platform Lifts, Small Indoor Personal Lift, Lightweight Scissor Lift, and Tracked Scissor Lift Platform.
Conclusion
Regularly checking the electrical connections of your mobile scissor lift is essential for its safe and efficient operation. By following the steps outlined in this blog, you can catch any potential electrical issues early and prevent costly repairs or safety accidents.
If you're in the market for a new mobile scissor lift or have any questions about maintenance, don't hesitate to reach out. We're here to help you make the best decision for your needs.
References
- Mobile Scissor Lift Maintenance Manuals
- Electrical Safety Guidelines for Industrial Equipment




