Clean rooms impose strict demands on every element of a facility, including the hardware that controls who enters and how. Doors, entry sequences and access points are a key part of contamination control. When that hardware is wrong for the environment, no amount of internal protocol compensates.
Summit Access & Security was brought in to replace a failing entry system at a clean room facility where the existing door configuration had become a liability. The client needed a solution that fit the specific mechanical and sanity requirements of their controlled environment, installed without disruption.
The existing entry system used a high-speed roll-up door. And while a standard industrial choice, it was the wrong choice for a clean room. The mechanism required the door curtain to coil during operation, which meant curtain surfaces contacted each other on every entry. That contact created a repeating source of particulate transfer and microbial accumulation that could not be cleaned away; it was built into how the door functioned. Sanitary compliance in that entry configuration was not achievable.
The configuration also lacked any sequenced entry control. Both doors could be open at the same time, which undermined pressure differentials and left no reliable contamination barrier between the clean room interior and the adjacent space. Summit Access & Security needed to design a replacement that addressed the mechanical contamination source, removed touch-based contact from the entry process and enforced a controlled entry sequence.
Summit Access & Security replaced the roll-up system with ASI Model 1250 Single Slide Power Doors. The ASI 1250 operates without any surface-to-surface contact during the open/close cycle. The door’s construction is compatible with the cleaning and maintenance standards required in a controlled environment.
The two-door entry was configured with that interlocking logic that Door A must be fully closed and latched before Door B can activate. Neither door can be in motion or open while the other is in any state other than fully secured. This prevents any direct open path between the clean room and the exterior and maintains the integrity of the pressure barrier regardless of how quickly personnel move through the entry.
Door activation was handled through touchless wave switches. Personnel trigger the doors with a hand gesture, no surface contact required. The choice eliminates a contact point that would otherwise accumulate particulate and biological contamination across hundreds of daily entries.
ADA and ANSI compliance requirements were worked through with the facility’s engineering team during the design phase, before construction began. All installation work was scheduled around the facility’s biannual shutdown windows, keeping the construction process out of active production entirely.
The new entry system resolved the contamination and access control deficiencies of the previous installation:
From the door mechanism itself, to the entry sequence, to how personnel physically interact with the entry point, the project replaced hardware that was actively working against the facility’s contamination control goals with a system that supports them at every step. The facility can now meet sanitary requirements at its clean room entry without working around the limitations of its own infrastructure.
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