Every mechanical device eventually has a bad day, and automatic bollards are no exception. When one stops working, the first instinct for most facility managers is to call the installer. That is not always necessary. Many common problems have straightforward fixes that your on-site maintenance team can handle.

The most frequent complaint is a bollard that will not rise. Before anything else, check the power supply. Verify that the breaker for the bollard circuit has not tripped. It sounds obvious, but power trips account for a surprising number of service calls, especially after electrical storms. If the breaker is fine, test the remote control or access device on a different bollard in the same group. If the second bollard responds, the problem is isolated to the first unit. If nothing responds, the issue is probably in the control cabinet or the master controller.

When a single bollard refuses to rise but power is confirmed, the cause is usually one of three things. First, check for physical obstruction. Debris, ice, or a small object lodged in the guide rails can prevent the column from traveling. Second, listen for the motor. If the motor runs but the bollard does not move, the drive mechanism or coupling may be damaged. Third, if the motor does not run at all, check the wiring connection at the bollard base. Corrosion on terminal blocks is a common culprit, particularly in coastal or high-humidity areas. UPARK's IP67-sealed housings protect internal electronics from moisture, but older installations without proper sealing are vulnerable.

Slow operation is another regular issue. A bollard that used to rise in 3 seconds and now takes 8 seconds is telling you something. For hydraulic bollards, slow operation usually means low oil level, dirty filters, or air in the hydraulic lines. Check the oil reservoir first, then inspect the filter element. Air in the lines requires a bleed procedure, which varies by manufacturer. For electromechanical bollards, slow operation typically points to voltage drop. Measure the voltage at the bollard's power input while it is operating. If it drops significantly below nominal, you may have an undersized cable run or a loose connection somewhere in the line. UPARK bollards run on 36V DC, which keeps the current manageable and reduces voltage drop over distance compared to higher-voltage systems.

Intermittent failures, where a bollard works sometimes but not others, tend to frustrate people the most. The most likely cause is a failing sensor or a poor electrical connection that makes contact only when conditions are right. Check all plug connections, especially those exposed to weather. If your system uses loop detectors or infrared sensors for vehicle detection, clean the sensor surfaces and check alignment. Heat expansion during the day can shift sensor brackets enough to break the detection beam.

Sometimes a bollard rises but will not lower. On hydraulic units, this often means a stuck solenoid valve. The valve may be gummed up with debris from degrading hydraulic oil. Replacing the solenoid is usually straightforward. On electric bollards, the issue is more likely a limit switch malfunction or a problem with the downward travel sensor. The bollard thinks it is already in the lowered position and stops trying.

Control system problems affect the whole group rather than individual units. If multiple bollards behave erratically, look at the control panel. Check for loose relays, blown fuses, or water intrusion in the cabinet. Many installers mount control cabinets outdoors without adequate weather protection. A cabinet with even a small gap can let in enough moisture to short a relay board over time. UPARK supplies control cabinets with proper sealing ratings and recommends indoor mounting whenever possible.

For hydraulic bollard owners, two problems deserve special mention because they rarely affect electric units. Oil leaks are the first. Hydraulic hose fittings loosen over time due to vibration, and seals degrade with age. A slow oil leak under the housing is easy to miss until the reservoir runs low enough to affect performance. The second is freezing. In cold climates, hydraulic oil thickens when temperatures drop. If the oil is not rated for your local winter temperatures, the bollard will operate sluggishly or not at all. Some installations require heated enclosures or winter-grade oil changes.

Electromechanical bollards sidestep both of these issues. No oil means no leaks, and no fluid means nothing to freeze. The 36V DC system also eliminates the risk of electrical shock during maintenance, which is a meaningful safety advantage for on-site staff performing inspections.

When a problem does exceed what your team can handle, having a clear description of the symptoms saves time on the service visit. Note when the problem started, how often it occurs, whether temperature or weather affects it, and what you have already tried. The more information the technician has upfront, the faster the repair gets done.

If your bollards are aging and the repair bills are adding up, it may be worth comparing the cost of continued servicing against replacement with modern electromechanical bollards. Lower maintenance requirements often offset the upfront investment within a few years. Contact UPARK at [email protected] for a no-obligation assessment of your current setup.