The HES 4500 Series electric strike is a heavy-duty, high-security solution designed for both cylindrical and mortise locksets. With its fail-secure default configuration, stainless steel construction, and compatibility with fire-rated door frames, this product offers a robust option for commercial and residential access control systems. This article provides a detailed breakdown of the installation process, configuration options, and key technical specifications based on official documentation from HES, Inc.
Introduction
Electric strikes such as the HES 4500 Series are essential components in modern access control systems, enabling remote or automated unlocking of doors without requiring physical manipulation of the lock. The 4500C Complete Pac model includes all necessary hardware for installation and supports both cylindrical and mortise lockset configurations.
The HES 4500C is engineered to meet or exceed BHMA/ANSI Grade 1 standards, ensuring durability and reliability in high-traffic or high-security environments. It features a unique keeper pin locking mechanism that allows the product to exceed the ratings of the frame, door, and locking hardware. Additionally, the 4500C can be configured for either fail-secure or fail-safe operation, depending on the desired access control behavior during power outages.
Installation involves precise measurement, alignment, and configuration of the electric strike with the existing lockset. This guide provides step-by-step instructions and technical insights to ensure correct and secure installation, based on HES, Inc.'s official documentation and product specifications.
Technical Specifications and Compatibility
The HES 4500C is designed for use with a wide range of lockset types and door configurations. Below are the key technical specifications and compatibility details:
Physical Dimensions and Design
- Depth: Approximately 1-3/8 inches
- Strike Opening Size: 4-7/8 inches
- Edge Cutout Depth: 1 inch
- Edge Cutout Height: 3-5/8 inches
- Latchbolt Throw Compatibility: Up to 3/4 inch
- Material: Heavy-duty, cast stainless steel
The low-profile design of the 4500C allows it to fit into ANSI-standard strike openings with a 1-inch deep edge cutout. This ensures compatibility with a wide range of door frames and locksets.
Electrical and Power Requirements
- Voltage Options: Dual voltage (12/24 VDC or VAC), included with the unit
- Current Draw:
- 240 mA at 12 VDC
- 120 mA at 24 VDC
- Power over Ethernet (PoE) Friendly: Supports PoE for integration with networked access control systems
- Operating Modes:
- Fail Secure: Door remains locked during a power outage (default)
- Fail Safe: Door unlocks during a power outage (requires configuration)
The dual-voltage capability and PoE compatibility make the 4500C adaptable to various access control infrastructures, including standalone systems and integrated networked environments.
Optional Features and Accessories
The HES 4500C offers several optional features and accessories to enhance its functionality and monitoring capabilities:
- LBM – Latchbolt Monitor: An internally mounted signal switch that detects the position of the latchbolt
- LBSM – Latchbolt Strike Monitor: Monitors the position of the latchbolt and confirms that the strike is properly locked
- 2001 Plug-in Bridge Rectifier: For AC-to-DC power conversion
- 2005 SMART-Pac II In-Line Power Controller: Enables remote control and monitoring
- 2006P Plug-in Buzzer: Provides audible feedback for lock/unlock events
- 2009P Plug-in LED: Offers visual status indication
These options allow for enhanced monitoring and user feedback, particularly in high-security environments where visibility and control are critical.
Installation Process and Requirements
Installing the HES 4500C electric strike requires careful preparation, precise alignment, and adherence to manufacturer guidelines. Below is a detailed breakdown of the installation process:
1. Pre-Installation Planning and Verification
Before beginning the installation, it is essential to verify the following:
- The door and frame are compatible with the HES 4500C dimensions and specifications
- The lockset (cylindrical or mortise) is compatible with a 3/4-inch latchbolt throw
- The door is installed in a 2-inch UL 10C fire-rated frame with 1/2-inch drywall penetration
- The local authority having jurisdiction (AHJ) has approved the use of electronic locking devices
The HES 4500C is designed for installation in 2-inch UL 10C fire-rated frames with 1/2-inch drywall penetration. This configuration reduces the available mounting space to approximately 1-1/2 inches, which must be accounted for during installation. Lip extensions (available in 1/2", 1", and 2" sizes) can be added to accommodate different frame widths.
2. Preparation of the Door and Frame
Before mounting the electric strike, the following steps should be completed:
- Remove the existing strike plate or hardware from the door frame
- Measure and mark the centerline of the latchbolt on the door
- Ensure that the door is properly aligned and the latchbolt operates smoothly
- Verify that the door opens and closes without binding or misalignment
For cylindrical locksets, the centerline of the latchbolt should align with the centerline of the electric strike. For mortise locksets, the centerline of the lockset is typically 3/8 inch below the centerline of the electric strike. The adjustable deadlatch tab included with the HES 4500C can be repositioned to accommodate this offset, depending on the lock manufacturer's specifications.
3. Mounting the Electric Strike
The HES 4500C includes an electric strike body with two faceplates (centerlined and non-handed) for cylindrical locksets. The installation process involves the following steps:
- Position the electric strike body in the strike opening, ensuring that it aligns with the centerline of the latchbolt.
- Insert the keeper shims and screws (#4-40 x 1/8" and #4-40 x 3/16") to secure the strike body to the frame.
- Attach the appropriate faceplate (centerlined or non-handed) based on the lockset type.
- Adjust the horizontal position of the strike using the full keeper shims included with the unit. This allows for minor adjustments to accommodate variations in door and frame alignment.
- Verify that the latchbolt can fully engage with the strike and that the door operates smoothly.
The unique keeper pin locking design of the HES 4500C ensures that the strike can exceed the ratings of the frame, door, and locking hardware. This design is particularly beneficial in high-security applications where durability and resistance to tampering are critical.
4. Connecting Electrical Components
Once the strike is securely mounted, the next step is to connect the electrical components:
- Connect the electric strike to the access control system using the appropriate wiring (12/24 VDC or VAC).
- Install optional accessories such as the SMART-Pac II power controller, buzzer, or LED indicator if required.
- Verify that the power source is stable and that the strike operates as expected.
- Test the fail-secure or fail-safe configuration to ensure the desired behavior during power outages.
The HES 4500C supports both fail-secure and fail-safe operation. The default configuration is fail-secure, meaning the door remains locked during a power outage. If fail-safe operation is required, the strike must be configured accordingly using the manufacturer's instructions.
5. Final Testing and Verification
After installation is complete, the following tests should be conducted:
- Mechanical Test: Manually operate the door to ensure that the latchbolt engages and disengages smoothly.
- Electrical Test: Apply power to the strike and verify that it unlocks and relocks as expected.
- Fail-Safe/Fail-Secure Test: Simulate a power outage to confirm that the strike behaves according to the selected configuration.
- Optional Feature Test: If the LBM or LBSM is installed, test its ability to monitor the latchbolt and strike position.
These tests ensure that the HES 4500C is functioning correctly and that all safety and security requirements are met.
Configuration and Operation Modes
The HES 4500C electric strike offers two primary operating modes: fail-secure and fail-safe. Each mode determines how the strike behaves during power outages and is selected based on the security requirements of the installation site.
Fail-Secure Mode (Default)
In fail-secure mode, the strike remains locked during a power outage. This is the default configuration and is typically used in high-security environments where unauthorized access must be prevented at all times. To unlock the door, power must be applied to the strike, which releases the latchbolt and allows the door to open.
This mode is ideal for applications such as data centers, government buildings, and secure storage facilities where security is the highest priority.
Fail-Safe Mode (Optional)
Fail-safe mode is an optional configuration that can be selected by following the manufacturer's instructions. In this mode, the strike unlocks during a power outage, allowing free access to the door. This is commonly used in emergency exit applications, where compliance with fire and safety codes requires doors to remain unlocked during an evacuation or power failure.
To configure the HES 4500C for fail-safe operation, the internal wiring or power controller must be adjusted. The manufacturer provides detailed instructions on how to perform this conversion, which must be completed before final testing and verification.
Maintenance and Troubleshooting
While the HES 4500C is designed for long-term reliability and durability, regular maintenance and troubleshooting are recommended to ensure continued performance:
1. Visual Inspection
Periodically inspect the electric strike and surrounding door hardware for signs of wear, corrosion, or damage. Check the following components:
- The strike body for rust or deformation
- The faceplate for looseness or misalignment
- The latchbolt for smooth operation and proper engagement
- The electrical connections for signs of overheating or corrosion
2. Lubrication
Apply a small amount of dry lubricant to the latchbolt and strike mechanism to maintain smooth operation. Avoid using oil-based lubricants, as they can attract dust and debris.
3. Electrical Testing
Use a multimeter to test the voltage and current draw of the electric strike. Verify that the power supply is stable and that the strike operates within the manufacturer's specifications.
4. Troubleshooting Common Issues
- Door does not unlock: Check the power supply, wiring connections, and access control system for faults. Ensure that the correct voltage is applied and that the strike is configured for fail-secure or fail-safe operation.
- Latchbolt does not engage fully: Adjust the horizontal position of the strike using the keeper shims. Verify that the centerline of the latchbolt aligns with the centerline of the strike.
- Strike does not lock securely: Check the keeper pin locking mechanism and ensure that the strike is properly mounted. Verify that the frame and door are aligned correctly.
- Unusual noise or vibration: Inspect the internal solenoid and mechanical components for wear or damage. Replace any faulty parts as needed.
If the issue persists, consult the manufacturer's technical support or a qualified locksmith for further assistance.
Compatibility with Access Control Systems
The HES 4500C is designed to integrate with a wide range of access control systems, including standalone controllers, networked systems, and smart door entry solutions. Key compatibility features include:
- PoE Support: The strike is compatible with Power over Ethernet (PoE) systems, allowing it to be powered and controlled through a single network cable.
- Dual Voltage Input: The unit supports both 12 VDC and 24 VDC inputs, making it adaptable to different power supply configurations.
- Signal Switch Integration: Optional features such as LBM and LBSM allow for real-time monitoring of the latchbolt and strike position, enabling enhanced security and control.
- Remote Configuration: When paired with a SMART-Pac II in-line power controller, the strike can be remotely configured and monitored through a networked access control system.
These features make the HES 4500C a versatile option for both new installations and upgrades to existing access control systems.
Safety and Compliance Considerations
The HES 4500C is manufactured to meet or exceed BHMA/ANSI Grade 1 standards, ensuring a high level of quality, durability, and security. It is also approved for use in UL 10C fire-rated frames, making it suitable for applications that require compliance with fire safety codes.
When installing the HES 4500C in a commercial or public space, it is essential to obtain approval from the local authority having jurisdiction (AHJ). This is particularly important for applications involving fail-safe operation, emergency egress, or high-traffic areas.
In addition, the strike must be installed in accordance with the manufacturer's guidelines and local building codes. This includes ensuring that the door and frame are properly aligned, that all electrical connections are secure, and that any optional accessories are correctly installed and configured.
Conclusion
The HES 4500C electric strike is a versatile, high-security solution designed for both cylindrical and mortise locksets. With its fail-secure default configuration, stainless steel construction, and compatibility with fire-rated door frames, it offers a reliable option for commercial and residential access control systems.
Installation requires careful preparation, precise alignment, and adherence to manufacturer guidelines. The unit supports both fail-secure and fail-safe operation, and can be enhanced with optional accessories such as signal switches, buzzers, and LED indicators.
Regular maintenance and troubleshooting are recommended to ensure continued performance, and the strike is designed to integrate with a wide range of access control systems, including PoE networks and smart entry solutions.
For users seeking a durable, high-performance electric strike, the HES 4500C represents a robust and secure choice that meets or exceeds industry standards.