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Technical Specification
Construction Materials
Mechanical life
Ambient Temperature
Shock and Vibration Resistance
Environment Type
Maximum Door Thickness
*Note; any gaps in door frame when closed must not exceed the limits specified in BS EN ISO 13857.
**The units will only continue to work below freezing point (0°C) where it can be guaranteed that ice will not form on or in the unit; as it will cause the mechanical parts to bind and
jam.
Safety Functions
Safety Function 1
Prevent unexpected machine restart.
Functionality
The ALPHA is to be used to add additional safeguard functionality to an existing Door, Gate or Hatch that is guarding a
hazardous or unsafe area.
The front mounted Paddle of the ALPHA ensures the Door or Gate that the product is mounted to cannot be fully opened
until a Personnel / Safety Key has been taken. Once the Key has been removed a rear mounted Blocker plate extends out-
wards between the Door or Gate and the hazardous or unsafe area. When extended, the Blocker plate prevents the Door or
Gate from being re-closed and locked before the Personnel Key has been reinserted and rotated. Padlocks can be added
to the Blocker plate for additional Interlock Blocking functionality.
Opening a Door or Gate with an ALPHA itted
• Remove the locking mechanism of existing Door lock or Interlock product if fitted.
• Open the Door or Gate until it comes into contact with the extended Paddle of the ALPHA.
• Rotate and remove the Personnel Key of the ALPHA. The paddle is sprung loaded. As the key is removed it will spring
away from the door, covering the Personnel lock. Simultaneously, rotation of the Personnel key will revolve the blocker
plate behind the gate. For Sliding Gates - slide door back to end of slot
• Open the Door or Gate fully.
• For sliding doors the hook will be removed from the knob holding the door closed.
Closing a Door or gate with an ALPHA fitted
• Close the Door or Gate until it rests against the extended Blocker plate of the ALPHA.
• Rotate the paddle clockwise until the entry to the personnel lock is exposed.
• Open the dustcover insert and rotate the Personnel Key into the ALPHA.
• Fully close the Door or Gate.
• For sliding doors rotate paddle and slot knob in opening of paddle
Operating Instructions: Interlock Blocking - ALPHA
316 Stainless Steel and Stainless Steel to BS3146-2:1975 (ANC4B)
1,000,000 operations
-25°C to +80°C**
Tested in accordance with IEC 60068-2-6 and IEC 60068-2-27
Indoor & Outdoor
70mm at ≥600mm door width*
Unique Safety Products | www.uniquesafetyproducts.com | sales@usp-safety.com
Part No.
ALPHA
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