The Yale Kyra Pro push-pull digital mortise lock requires strict adherence to physical door dimensions, mortise pocket specifications, and architectural hardware alignments. Proper site preparation and dimensional checks ensure seamless operation of the fully-automatic motorized mortise mechanism and prevent binding during latch retraction and deadbolt extension.
Door Dimensional Requirements and Preparation
Before initiating door machining, verify that the door assembly meets the engineering criteria specified for the Yale Kyra Pro chassis. The mortise configuration requires a standardized 60 mm backset measured from the door edge to the centre of the lock cylinder and spindle axis. The lock is engineered to mount onto door leaves with thicknesses ranging between 40 mm and 100 mm.
- Backset Dimension: 60 mm
- Door Thickness Range: 40 mm to 100 mm
- Front Body Dimensions: 78 mm (W) x 390 mm (H) x 50 mm (D)
- Back Body Dimensions: 76 mm (W) x 390 mm (H) x 60 mm (D)
- Hardware Finish: Matt Black with Champagne Gold Trimming
Ensure that door stiles provide sufficient flat clearance to accommodate the 78 mm wide front body and 76 mm wide back body without overlapping glass beadings, architectural moulding profiles, or frame rebates.
Environmental and Location Evaluation
The Yale Kyra Pro is intended for indoor access control and sheltered entrance perimeter applications. The lock is not rated for unshielded outdoor environments with direct exposure to driving rain or severe weather conditions. Moisture ingress through the escutcheon perimeter or interface gaps can cause electrical shorting across the biometric fingerprint reader, PIN keypad, and internal control boards. Exterior doors must feature an overhead canopy or porch structure providing protection from direct precipitation.
Mortise and Escutcheon Assembly
Prepare the door leaf edge mortise pocket to receive the fully-auto lock case flush with the door face. Route the multi-conductor harness through the cross-bore hole carefully, ensuring the cable is not pinched or sheared against the inner steel mounting plates during fastening. Position the external front body on the exterior face and secure it to the interior mounting bracket using the provided machine screws.
Connect the wiring harness securely to the multi-functional back body. The interior assembly accommodates the thumb-turn knob, open/close button interface, and battery housing. Align the interior drive spindle and secure the back body to the mounting bracket, verifying that push-pull movement operates without mechanical binding.
Striker Plate Alignment and Clearance Setup
Accurate positioning of the frame striker plate is critical for fully automated mortise operation. Striker misalignment resulting from door sagging, frame settlement, or thermal warping causes mechanical deadbolt resistance or latch retraction failure. Install the strike plate and dust box flush into the frame jamb, ensuring the deadbolt extends into the strike pocket without friction.
Technicians and users must avoid closing the door forcibly while the deadbolt is extended. Forcible contact between a protruded deadbolt and the door frame will cause severe mechanical damage to the internal mortise gears and latch assembly.
Power Setup and Mechanical Override Verification
Power is supplied to the lock by standard alkaline batteries (they are not included). Install high-quality alkaline batteries (they are not included) into the back body battery compartment, observing correct polarity alignment. Before latching the door leaf, test the thumb-turn knob, internal unlock button, and exterior handles while the door remains open.
Verify secondary access mechanisms prior to handover. Confirm smooth physical operation using the 2 mechanical key overrides included in the hardware package. Additionally, test the 5V emergency power input via the external Type-C USB port to verify that the lock can be energized externally in the event of completely drained internal alkaline batteries (they are not included).
.jpg)