Product Overview
The EVVA Euro Double Cylinder 41/41 NP is a high-security key lock designed for various door types. This nickel-plated cylinder offers robust protection and is part of EVVA's entry-level cylinder range. It features 30-minute fire resistance up to 821°C and comes with three keys. The cylinder can be configured for keyed-to-differ, keyed-alike, or master-keyed systems.
Image: The EVVA Euro Double Cylinder 41/41 NP, a nickel-plated key lock, shown alongside three brass-colored keys. The cylinder is a double-ended design, indicating it requires a key for operation from both sides.
Setup and Installation
Proper installation is crucial for the security and functionality of your EVVA Euro Double Cylinder. It is recommended that installation be performed by a qualified locksmith or experienced individual.
- Preparation: Ensure the door is prepared with a standard Euro profile cylinder cutout. Measure the existing cylinder to confirm the 41/41 NP (82mm total length) is the correct size for your door thickness.
- Remove Old Cylinder (if applicable): Unscrew the retaining screw located on the door edge, typically below the latch. Insert a key into the existing cylinder and turn it slightly (about 15-20 degrees) to align the cam with the cylinder body, allowing it to slide out.
- Insert New Cylinder: Insert one of the supplied keys into the new EVVA cylinder. Turn the key slightly to align the cam with the cylinder body. Slide the new cylinder into the door's mortise lock until it is flush with the door face.
- Secure Cylinder: Re-insert and tighten the retaining screw on the door edge. Do not overtighten.
- Test Operation: With the door open, insert a key from both sides and turn it to ensure smooth operation of the lock mechanism. Check that the key can be fully inserted and removed without obstruction.
Operating Instructions
The EVVA Euro Double Cylinder operates with a key from both the interior and exterior sides of the door.
- Locking: Insert the key fully into the keyway. Turn the key clockwise (or counter-clockwise, depending on the lock mechanism) until the bolt is fully extended and the door is secured. Remove the key.
- Unlocking: Insert the key fully into the keyway. Turn the key counter-clockwise (or clockwise) until the bolt is fully retracted and the door is unlocked. Remove the key.
- Key Duplication: This cylinder range allows for unrestricted key duplication. Keys can be duplicated by a qualified locksmith using standard key cutting equipment.
Maintenance
Regular maintenance ensures the longevity and smooth operation of your lock cylinder.
- Lubrication: Periodically (e.g., once a year), apply a small amount of graphite-based lubricant or a specialized lock lubricant into the keyway. Avoid using oil-based lubricants as they can attract dust and debris, leading to clogging.
- Cleaning: Keep the keyway free from dust and debris. Use a soft, dry cloth to wipe the exterior of the cylinder. Do not use abrasive cleaners or solvents.
- Key Care: Avoid bending or damaging the keys. Store spare keys in a secure location.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Key is difficult to insert or turn. | Dust/debris in keyway, lack of lubrication, bent key. | Apply lock lubricant. Check key for damage; use a different key if available. Clean keyway with compressed air. |
| Cylinder does not turn freely after installation. | Retaining screw overtightened, cam misalignment, incorrect cylinder size. | Loosen retaining screw slightly. Re-check cam alignment. Verify cylinder size is appropriate for door. |
| Key gets stuck in cylinder. | Internal mechanism issue, worn key, foreign object. | Do not force the key. Try wiggling gently while applying slight turning pressure. If persistent, consult a locksmith. |
Specifications
- Brand: EVVA
- Model: 41/41 NP
- Lock Type: Key Lock
- Material: Alloy Steel
- Finish: Nickel Plated
- Size: 82mm (41mm exterior, 41mm interior)
- Fire Resistance: 30 minutes to 821°C
- Included Components: 1 x Cylinder, 3 x Keys
- Recommended Uses: Residential Doors, Office Doors, Fire Safety Areas
- Item Weight: Approximately 0.4 Kilograms (14.1 ounces)
Support
For further assistance, technical support, or inquiries regarding your EVVA Euro Double Cylinder, please contact your authorized EVVA dealer or the point of purchase. Ensure you have your product model number (41/41 NP) available when seeking support.
