Photo Eye & Safety Edge Repair
A commercial overhead door that does not auto-reverse on contact is a liability — and in many jurisdictions, a code violation. Photo eyes and safety edges are the two main safety systems on commercial doors. When they fail or drift out of calibration, the door becomes a hazard. We inspect, align, and replace photo eyes, contact safety edges, and loop detectors on commercial overhead doors across Greater Vancouver. Call 604-206-5727.
Photo Eye Systems
Photo eyes are infrared beam sensors mounted on both sides of the door opening — one transmitter, one receiver. When the beam is broken while the door is closing, the door reverses. Alignment drift is the most common issue: the transmitter and receiver need to be within a degree or two of each other to maintain a reliable beam. Vibration from operating the door, cleaning, and accidental contact all knock photo eyes out of alignment over time. Dirty lenses and wiring damage are the other common failure points.
Contact Safety Edges
A contact safety edge is a pneumatic or electric strip across the bottom of the door that triggers a reversal when it contacts an object. Contact edges are more reliable than photo eyes in dirty or high-airflow environments — a beam sensor in a dusty warehouse or near a dock fan can generate false signals, but a contact edge is trigger-on-contact only. We replace worn contact edge gaskets and repair or replace the control module when it fails.
Loop Detectors
Loop detectors are wire loops embedded in the concrete in front of or behind the door that detect a vehicle and signal the door to open or hold open. Loop failures are common after concrete work, resurfacing, or if the loop wire was damaged during paving. We do not resurface concrete, but we can diagnose loop failures and advise on options including surface-mount loop alternatives.
Testing and Documentation
After any safety device repair or adjustment, we perform a full safety test — place an obstruction under the closing door and confirm auto-reverse activates. For strata and commercial properties that need documentation, we can provide a written safety test record.
Frequently Asked Questions
How do I test if my commercial door photo eyes are working?
With the door closing, break the beam path between the two sensors with your hand or an object. The door should immediately reverse. If it does not, the photo eye system is not functioning. Take the door out of auto-close mode and call for service.
Can photo eyes on commercial doors be replaced without calling a technician?
The sensor units themselves can be swapped, but alignment and wiring connection to the operator control board require knowing the specific operator model. An improperly wired photo eye can either fail to prevent auto-close (dangerous) or trigger false reversal on every cycle (operationally disruptive). We recommend professional installation.
What is the difference between a photo eye and a safety edge on a commercial door?
A photo eye uses an infrared beam across the opening that, when broken, reverses the door before it contacts anything. A safety edge is a physical strip on the bottom of the door that reverses when it contacts an object. Safety edges are required on many commercial applications where a vehicle or person could be hit by the door before breaking the beam.
Who repairs commercial door safety devices in Vancouver?
We service photo eyes, contact safety edges, and loop detectors on commercial overhead doors across Greater Vancouver. Call 604-206-5727 for same-day service or inspection.
Call us for commercial door service in Vancouver: 604‑206‑5727 — same-day response, 24/7 emergency, honest quotes before any work starts.
Commercial Door Safety Systems
Commercial overhead doors are required by code to have functional safety reversal systems. WorkSafeBC and the BC Building Code require that power-operated commercial doors reverse or stop if an obstruction is detected during closing. A door that fails to reverse is a serious workplace safety hazard and creates significant liability for the building owner.
Photo eye sensors are the most common safety system on commercial doors. A pair of sensors mounted near the floor on each side of the door creates an infrared beam across the door opening. If the beam is interrupted while the door is closing, the operator stops or reverses. Photo eye misalignment — from vibration, vehicle contact, or floor settling — breaks the beam continuously, causing the door to reverse immediately after beginning to close. This is one of the most common commercial door service calls.
Safety edges are the alternative or supplementary system: a pressure-sensitive rubber edge along the bottom of the door panel that triggers reversal if it contacts an obstruction. Safety edges are required on certain door types and are mandatory in some occupancies. A failed safety edge that doesn’t trigger reversal on contact can cause injury. We test safety edge function on every service call that involves operator adjustment.
Safety System Services
- Photo eye realignment — beam alignment and mounting bracket adjustment
- Photo eye replacement — complete sensor kit when lens or wiring is damaged
- Safety edge testing — force test to confirm reversal at correct pressure
- Safety edge replacement — full edge replacement when spring steel or contact strip fails
- Operator force adjustment — calibrating closing force to prevent entrapment injury
- WorkSafeBC compliance documentation — written safety test result for your records
My Vancouver commercial door reverses immediately when closing — what’s wrong?
This is almost always a photo eye issue: the sensors are misaligned, the lens is dirty or condensation-fogged (common in Vancouver’s climate), or one sensor has failed. It can also be an operator force setting issue. We can diagnose and fix this in a single visit — call 604-206-5727.
How often should commercial door safety systems be tested?
WorkSafeBC recommends monthly reversal testing by the building operator and annual professional inspection. Our annual maintenance service includes a documented safety test with written results that you can use for WorkSafeBC compliance records.