When a Klang Valley hospital approached us to replace the ageing automatic doors on its main entrance, the brief was uncompromising: near-silent operation, absolute safety for frail and wheelchair-bound patients, and zero unplanned downtime on an entrance that cycles thousands of times a day. This is how we specified, installed and commissioned an Automatic Sliding Doors system built to our 4S Principles.
The Challenge: A 24/7 Entrance That Cannot Fail
A hospital main entrance is one of the most demanding environments an automatic door will ever face. It runs continuously, it carries heavy security glass, and it must never clamp down on a patient, a trolley or a visitor. The existing doors were noisy, slow to respond and prone to sensor faults — exactly the failure pattern we see when a standard-duty operator is asked to do commercial-grade work.
The facilities team needed three things at once: silence, so the entrance did not add to a stressful environment; safety, so there was no risk of contact injury; and reliability, because every hour of downtime pushes foot traffic through a single side door.
Why standard doors struggle here
Residential-grade operators are typically rated for a fraction of the duty cycle a hospital demands. Under continuous use they overheat, wear rollers quickly and lose sensor calibration — the root cause of most “door won’t open” callouts.
The Specification: HH150 and the 4S Principles
We specified our flagship HH150 mechanism with a 100W BLDC motor and worm-gear drive, rated to 200kg per leaf so it carries thick tempered security glass without strain. The 4S Principles shaped every choice:
- Stable — three wheels over two tracks keep heavy leaves running true, cycle after cycle.
- Safe — anti-clamp technology and a photocell safety beam stop and reverse the door the instant an obstruction is detected.
- Silent — a specialised rubber design damps the noise a busy entrance would otherwise generate.
- Strong — the BLDC motor delivers constant torque under a 100% continuous duty cycle.
We paired the operator with presence sensors and a hands-free activation option suited to a clinical setting, plus battery backup so the door opens safely during a power interruption.
Installation and Commissioning
Because the entrance could not close during hospital hours, we staged the work around the facility’s quietest window and kept a safe temporary route open throughout. After mechanical installation we commissioned the system methodically: sensor field mapping, anti-clamp force testing, opening and closing speed tuning, and a full safety sign-off.
| Requirement | Result |
|---|---|
| Duty cycle | 100% continuous |
| Leaf capacity | 200kg security glass |
| Safety | Anti-clamp + safety beam, tested and signed off |
| Noise | Near-silent under normal traffic |
The Outcome
The new entrance runs quietly, responds instantly and has held calibration since commissioning. Just as importantly, the hospital now has one accountable partner for the door’s whole life — we hold HH150 and legacy 4S spare parts in stock and offer a 4-hour priority response for service-tier clients across the Klang Valley, so a fault is measured in hours, not days.
This is the standard we bring to every high-traffic entrance, whether it is a hospital, a mall, a hotel or a government building.
Planning a high-traffic entrance that cannot fail? — Book an on-site analysis for automatic sliding doors
Brian Cheah
Director, Ebcotech Machinery Sdn Bhd
Director of Ebcotech Machinery, GW GeWalt's parent company, based in Kuala Lumpur.
Certified Government & High-Security Building Installer