SIMPLEX LL1021B-26D-41
SIMPLEX LL1021B-26D-41 Cylindrical Push Button Lock Instruction Manual
Model: LL1021B-26D-41
Introdución
This manual provides essential instructions for the installation, operation, and maintenance of your SIMPLEX LL1021B-26D-41 Cylindrical Push Button Lock. This heavy-duty lock is designed for high-security applications in commercial, institutional, and industrial environments, offering reliable combination entry and key override functionality. Please read these instructions thoroughly before proceeding with installation or operation to ensure proper function and security.

Image: SIMPLEX LL1021B-26D-41 Cylindrical Push Button Lock with lever handle, shown in Satin Chrome finish. This image displays the exterior of the lock assembly, including the keypad and lever.
Características do produto
- Single Access Code: Manages one easy-to-use code for all authorized users.
- Fácil programación: The lock can be programmed via the keypad without removal from the door.
- Factory-Handed: The lock is manufactured with a specific handing (left or right) and is not field reversible.
- Core Compatibility: Designed for small format interchangeable cores (SFIC) and large format removable cores. Note: Core is sold separately.
- Construción duradeira: Heavy-duty metal construction for enhanced security and longevity.
- Remate: Satin Chrome finish for a professional appearance.
Contido do paquete
Upon opening the package, please verify that all components are present and undamaged. The standard package for the SIMPLEX LL1021B-26D-41 lock typically includes:
- SIMPLEX LL1021B-26D-41 Cylindrical Push Button Lock Assembly (exterior and interior components)
- Installation hardware (screws, spindle, etc.)
- User manual / Programming guide
Nota: This lock is supplied "Less Core," meaning the key cylinder (SFIC or large format core) is not included and must be purchased separately. The term "Comb" in some documentation refers to the combination mechanism or general components, not a physical comb tool.
Configuración e instalación
Proper installation is crucial for the security and functionality of your SIMPLEX LL1021B-26D-41 lock. It is recommended that installation be performed by a qualified professional.
- Preparación da porta: Ensure the door is properly prepared with the correct bore holes and backset (2-3/4" backset) for a standard cylindrical lock. Verify door thickness compatibility.
- Handing Verification: Confirm the lock's factory handing matches your door's handing (left-hand or right-hand). This lock is not field reversible.
- Instalar o pestillo: Insert the 1/2" throw latch into the door edge.
- Instalar o corpo da fechadura: Mount the exterior and interior lock bodies, ensuring the spindle engages correctly with the latch mechanism. Secure with provided screws.
- Install Key Core (Optional): If using the key override feature, install the appropriate 6/7-Pin SFIC or large format removable core (purchased separately) into the lock cylinder housing.
- Proba de función mecánica: Before programming, test the mechanical operation of the levers and latch bolt to ensure smooth movement.
Refer to the detailed installation template and instructions included with your lock for precise measurements and steps.
Instrucións de funcionamento
Entering the Combination
- Locate the push buttons on the exterior side of the lock.
- Enter the correct numerical combination by pressing the buttons in the designated sequence.
- After entering the combination, turn the lever handle to retract the latch bolt and open the door.
- Release the lever, and the latch will extend, securing the door.
Key Override Function
If a key cylinder (core) has been installed, the lock can be opened using the corresponding key. Insert the key into the cylinder and turn it to retract the latch bolt. This provides an alternative entry method, useful for emergencies or when the combination is not known.
Cambiando a combinación
The SIMPLEX LL1021B-26D-41 lock allows for easy code changes via the keypad without removing the lock from the door. Specific instructions for changing the combination are typically found on the interior side of the lock or in a separate programming guide. Generally, this involves a sequence of button presses and lever turns to set a new code. Always test the new code multiple times with the door open before closing and locking it.
Mantemento
Regular maintenance ensures the longevity and reliable operation of your SIMPLEX lock.
- Limpeza: Limpe as superficies exteriores cun suave, damp cloth. Avoid abrasive cleaners or solvents that could damage the finish or internal mechanisms.
- Lubricación: Periodically apply a small amount of graphite-based lubricant to the latch bolt and key cylinder (if installed) to ensure smooth operation. Do not use oil-based lubricants, as they can attract dirt and debris.
- Inspección: Regularly check all visible components for signs of wear, damage, or loose screws. Tighten any loose fasteners.
- Factores ambientais: Protect the lock from extreme weather conditions or corrosive environments, which can accelerate wear.
Resolución de problemas
If you encounter issues with your SIMPLEX LL1021B-26D-41 lock, refer to the following common problems and solutions:
| Problema | Causa posible | Solución |
|---|---|---|
| Combination does not open the lock. | Incorrect combination entered, combination changed, or internal mechanism issue. |
|
| Lever turns but does not retract the latch. | Spindle not engaging, internal mechanism obstruction, or worn parts. |
|
| Key does not operate the lock. | Incorrect key, damaged key/cylinder, or no key cylinder installed. |
|
| Lock feels stiff or difficult to operate. | Lack of lubrication, dirt accumulation, or misalignment. |
|
Especificacións
Detailed technical specifications for the SIMPLEX LL1021B-26D-41 Cylindrical Push Button Lock:
- Marca: SIMPLEX (Manufacturer: KABA)
- Número de modelo: LL1021B-26D-41
- Tipo de bloqueo: Cylindrical Push Button Lever Lock
- Entry Method: Combination Entry, Key Override (core sold separately)
- Retroceso: 2-3/4 polgadas
- Lanzamento do pestillo: 1/2 polgadas
- Key Core Prep: 6/7-Pin Small Format Interchangeable Core (SFIC)
- Material: Metal resistente
- Remate: Satin Chrome (US26D)
- Entrega: Factory-handed (not field reversible)
- Usos recomendados: High-security applications in commercial, institutional, and industrial buildings, and areas with high personnel turnover.
- Peso do artigo: Aproximadamente 9 libras
- Compoñentes incluídos: Lock assembly and installation hardware (key core not included)
Garantía e Soporte
Garantía: The SIMPLEX LL1021B-26D-41 lock is provided with No Manufacturer Warranty as per the product specifications. Please refer to your retailer's return policy for any initial product defects.
Soporte técnico: For technical assistance, detailed programming instructions, or to inquire about replacement parts, please contact the manufacturer, KABA, or an authorized SIMPLEX dealer. Contact information can typically be found on the manufacturer's official websitio.
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