Automatic Sliding Door for Cold Storage — Hands-Free

The Prime Coil automatic sliding door for cold storage is a purpose-built hands-free access solution for facilities where manual doors are impractical — high-cycle traffic corridors, food safety-regulated environments requiring hands-free operation, pharmaceutical cold rooms with contamination protocols, and any facility where operator efficiency matters more than upfront capital cost. Every automatic sliding door we supply is engineered from the ground up for continuous automatic duty — not adapted from a manual door with a bolt-on motor.

Why purpose-built automatic is different from retrofit motor kits

Any sliding door can have a motor added to it — but purpose-built automatic sliding doors and manual doors with retrofit motor kits are fundamentally different products. The difference matters for facilities that will accumulate 30,000-100,000+ door cycles per year:

Motor sizing matches duty cycle. Retrofit motor kits use motors sized for occasional use — opening a manual door when hands are full. Purpose-built automatic doors use motors specified for continuous cycling with proper thermal derating and duty-cycle ratings. Retrofit motors overheat, wear prematurely, and fail within 2-3 years in high-cycle applications.

Sensor integration is engineered, not bolted on. Purpose-built automatic doors have proximity sensors, safety edges, and control logic engineered as an integrated system. Retrofit installations bolt sensors onto whatever mounting surface is available, wire them through improvised control boxes, and produce systems that work but never quite feel right.

Safety features are standard, not optional. Purpose-built automatic sliding doors include safety edge protection (pressure-sensitive strips that stop closing on contact), obstacle detection (light curtain or presence sensors), emergency manual override, and integration with facility safety systems. Retrofit kits typically include only the motor and basic sensor.

Cycle life is documented. Purpose-built automatic doors are tested and rated for specific cycle counts (typically 50,000-200,000 cycles depending on application). Retrofit motors have no documented cycle life in this application because they were never designed for it.

The specific facilities that need automatic sliding doors

Not every cold storage facility needs automatic doors. Manual operation works fine when door traffic stays under 50 cycles per day per door. The threshold at which automatic becomes justified varies by facility type:

High-traffic food processing. A meat processing plant or dairy facility opens each production-area door 200-500 times per day during a shift. Manual operation slows every operator, ties up hands, and creates ergonomic strain over long shifts. Automatic sliding doors pay back through operator productivity within 12-18 months.

Food safety and pharmaceutical hygiene. FSSAI, HACCP, and GDP protocols increasingly require hands-free entry into critical process areas — the door must open without operator hand contact to maintain hygiene protocol. Manual doors technically comply but create friction with audit teams. Automatic sliding doors eliminate the compliance question entirely.

Cold chain distribution centres. Cross-dock and distribution facilities open doors thousands of times per day as forklifts and pallet jacks move between temperature zones. Manual operation is physically impossible at this volume; automatic is the only viable approach.

Cleanrooms and pharmaceutical facilities. Hands-free operation minimises contamination transfer between rooms. Combined with airlock design, automatic doors are essential to maintaining classified air quality inside pharmaceutical manufacturing and storage areas.

Sensor technology — which type for which application

Every automatic sliding door for cold storage uses activation sensors to trigger opening. Three sensor types are commonly available, each suited to different applications:

Microwave motion sensors — detect movement toward the door within a defined field. Work through packaging materials and worker clothing, function reliably in cold storage temperatures, and don’t require the operator to make specific gestures. Best general-purpose choice for most cold storage installations.

Infrared proximity sensors — detect close-range presence, typically activating when someone approaches within 1-2 metres. Simple, reliable, and cheap; downside is they can miss slow-moving traffic and don’t activate for forklifts approaching from an angle.

Push-button activation — no sensor at all; operator presses a button to open. Best for controlled-access applications (pharmaceutical cleanrooms, hygiene protocols requiring specific operator awareness) where automatic sensing is undesirable.

Our engineers help select the correct sensor type during specification based on your specific traffic patterns and application requirements. Multiple sensor types can be installed for different door approach directions.

Safety features engineered in

Every Prime Coil automatic sliding door for cold storage includes safety features that meet international automatic door safety standards:

• Safety edge protection — pressure-sensitive strip on the leading edge of the door reverses opening direction on contact with any obstacle
• Presence detection — infrared beam array detects operators and equipment within the door swing area, holds door open until path clears
• Emergency stop button — accessible from both sides of the door for immediate operation halt
• Manual override — physical release lever allows manual door operation during power failure or maintenance
• Fail-safe close — door defaults to closed position on power loss, maintaining cold storage temperature during outages

PLC integration ready

Standard control includes discrete inputs and outputs for integration with facility PLC systems — including our own PLC Control Panels. This enables:

• Interlock control with adjacent doors (airlock protocols)
• Access control integration with facility security systems
• Alarm and monitoring through central SCADA
• Scheduled operation (e.g., locked during off-hours)
• Data logging of open/close events for audit compliance

For pharmaceutical facilities operating under GDP, this integration is not optional — door activity must be logged as part of environmental control audit trails.