Technical Diagnostics: Harefield Engineering
Quick Answer
Why is my door opening randomly?
This is often 'ghosting' caused by radar interference or sensor drift. In Harefield, we see this frequently with older analog sensors. We upgrade these to digital units that filter out environmental noise.
Component Analysis
Operator Mechanics: We inspect the DC motor for overheating and replace worn brushes or the entire brushless unit if efficiency drops.
Safety Beams: We test the 'monitored' status of safety beams to ensure the door reverses immediately upon detecting an obstruction.
BS EN 16005 Compliance Matrix
Safety is mandatory. Our audits check specific parameters:
| Test Parameter | Limit | Action |
|---|---|---|
| Dynamic Impact | < 400N | Adjust motor torque |
| Static Entrapment | < 150N | Test safety reversal |
| Sensor Monitoring | Every Cycle | Verify controller feedback |
Engineer FAQ: Harefield
What is your response time for Harefield businesses?
Our local engineers in Harefield are on standby for same-day attendance.
Do you repair Assa Abloy operators?
Yes, we are independent specialists capable of repairing Tormax, Dorma, and most major brands using compatible parts.