Why cameras, access control and intercoms fail on the day you need them

The worst moment to learn a camera wasn't recording is when someone asks to see what happened. A vehicle was damaged in the garage, a door was found propped open, a delivery went missing. You open the recorder, go to the right date and time, and there is a gap.

That scene repeats in many buildings because security equipment fails without making noise, and because everyone assumes someone else would have noticed. Nothing beeps. The system looks on, the screens show a live picture, and the failure sits in the part nobody watches.

How cameras stop doing their job

Live view is not recording. A monitor can show a perfect picture from a camera whose footage isn't being saved. Common reasons: the recorder's storage is full or a drive has failed, a network switch or cable has dropped a camera from the system, a setting changed after a power outage, or the clock is wrong so the footage exists but under a different time than you expect.

Then there is the picture itself. Lenses collect dirt, webs and a film of salt. Focus drifts. Infrared illuminators that help at night burn out or get blocked by webs and insects, so a camera that looks fine at noon is nearly blind at 2 a.m. Someone repositions a camera during cleaning or a landscaping job, and now it watches a wall, a tree or the sky.

How access control and gates fail

A door that can't latch is an open door, whatever the system says. Door strikes wear. Closers drift out of adjustment, so a door that should latch on its own swings slowly and stops a quarter inch short. Doors get propped open with a wedge because the reader is slow, which defeats the whole system.

Card readers lose their connection to the controller and stop updating, so a cardholder who left months ago may still get in, or a new tenant may be locked out. Batteries in wireless locks run down. Vehicle gates and barrier arms carry mechanical wear, and their safety sensors are exposed to weather and traffic every day.

Intercoms and tele-entry

A tele-entry panel at the building door is the visitor's first point of contact. When its audio has failed, the directory lists tenants who left two years ago, or the door release doesn't work, the visitor either leaves or follows someone in. Speakers and microphones in outdoor stations take rain, heat and insects. A call that rings but carries no sound is as good as no intercom.

A monthly walk-round for facility managers

Ten minutes a month finds most of this. Take a notebook, date the page and file it.

• Pick three cameras at random and pull yesterday's footage from 2 a.m. Check the time stamp, the picture and whether the night view is usable.
• Check the recorder for storage status, disk errors and how many days of video it actually holds.
• Walk to each camera and look at the lens, the angle and the housing.
• Test every reader with a card, and listen to the lock, the latch and the closer.
• Look for propped doors, worn strikes and closers that stop short.
• Operate each gate and barrier arm, and test the safety stop.
• Call each intercom station and check the audio both ways and the door release.
• Update tenant directories, and remove cards and codes for people who left.

Testing end to end

A walk-round proves the visible parts. The rest takes testing each device end to end: from the camera to the recording and back to playback, from the card to the door, from the visitor's button to the person who answers. If any link in that chain is broken, the device is decoration. Test the chain after every power outage, every network change and every storm, not only on a schedule.

Specialized Maintenance Services (ESS) maintains, repairs and installs security cameras, door and vehicular access controls, tele-entry and intercom systems for commercial and industrial buildings in Puerto Rico and the Caribbean. Its engineers and technicians test the equipment and report their findings and recommendations, and the electronic records of each service stay available to the customer.

If you aren't certain your cameras are recording right now, don't wait for an incident to find out. See the Security Cameras and Door Access Controls service pages, or call the 24/7 line at 787-944-3109.