Introduction
This manual provides comprehensive instructions for the Master Lock 5400D Set Your Own Combination Portable Lock Box. Please read this manual carefully before using the product to ensure proper operation and longevity.
The Master Lock 5400D is designed to securely store keys, offering convenient access through a customizable combination. Its portable design allows for versatile use in various settings.
Safety Information
- Do not force the lock mechanism. If it is difficult to open or close, recheck the combination.
- Keep the combination confidential and store it in a safe, memorable place, separate from the lock box.
- Ensure the lock box is securely closed and the shackle is properly engaged after each use.
- This product is designed for key storage. Do not store hazardous materials or items of extreme value that require higher security measures.
Setup
Setting Your Own Combination
The lock box comes preset to 0-0-0-0. Follow these steps to set your personal combination:
- Open the key storage compartment. Inside, locate the reset lever on the back of the door.
- Move the reset lever from position A to position B (usually to the right or up).
- Rotate the dials to your desired new 4-digit combination. Make sure the numbers are aligned with the indicators.
- Move the reset lever back to position A (its original position).
- Close the key storage compartment and scramble the dials to lock the box.
- Important: Test your new combination before closing the door completely and scrambling the dials. If the combination is not set correctly, you may be locked out.
Image: Four Master Lock 5400D portable lock boxes. Each box is black with a grey front panel featuring four combination dials and the "Master Lock" logo at the bottom. The shackle is visible at the top of each box.
Mounting the Lock Box (if applicable)
The portable design allows for attachment to various fixtures. Ensure the shackle is securely fastened to a stable object that cannot be easily removed or cut. The shackle opens by pressing the release button located on the side of the lock box once the correct combination is entered.
Operating Instructions
Opening the Lock Box
- Rotate the combination dials to your preset 4-digit combination, ensuring each number aligns precisely with the indicator marks.
- Press the black release button located on the side of the lock box. The front door of the key storage compartment should spring open.
- To open the shackle, press the shackle release button (usually located on the opposite side or near the shackle base) while the front door is open.
Closing the Lock Box
- Place keys or other items inside the compartment.
- Close the front door firmly until it clicks shut.
- Scramble the combination dials to a random set of numbers to secure the lock box and prevent unauthorized access.
- Ensure the shackle is also securely closed if it was opened.
Maintenance
- Cleaning: Wipe the exterior of the lock box with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the finish or internal mechanisms.
- Lubrication: Periodically, a small amount of silicone-based lubricant can be applied to the combination dials and shackle mechanism to ensure smooth operation. Do not use oil-based lubricants.
- Storage: When not in use, store the lock box in a dry environment to prevent corrosion.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Lock box will not open with combination. | Incorrect combination entered; dials not aligned; reset lever not fully returned to position A. |
|
| Dials are stiff or difficult to turn. | Dirt/debris; lack of lubrication; extreme temperatures. |
|
| Door or shackle will not close properly. | Obstruction; mechanism misalignment. |
|
Specifications
- Model: 5400D
- Lock Type: Combination Lock
- Color: Black
- Special Feature: Portable
- Key Capacity: 5 keys (approximate, depending on key size)
- Material: Durable metal construction
- Dimensions: (Refer to product packaging for exact dimensions)
Warranty and Support
Master Lock products are manufactured to high quality standards. For warranty information, product registration, or technical support, please visit the official Master Lock website or contact their customer service department directly.
Master Lock Official Website: www.masterlock.com
Please have your product model number (5400D) and proof of purchase available when contacting support.
