MSA alphaBELT Pro Operating Manual page 13

GB 3 Use
Use of Click Buckles
Safe-Click Buckle (Main Lock with Three Point Safety)
Open
Close Separate
To close the buckle
(1) Push the parts of the buckle together until the "click" sound is noticeable.
(2) Check if the buckle is locked and functioning properly.
– Buckle halves freely movable within each other, pull on both buckle halves.
A gap between the buckle halves remains.
To open the buckle
(1) Push the parts of the buckle together while simultaneously pressing the two unlocking buttons in the direction of
the MSA logo.
(2) Pull the buckle halves apart.
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