1. ആമുഖം
This manual provides comprehensive instructions for the setup, operation, and maintenance of your Master Lock MLK5400D Locking Combination 5 Key Steel Box. Please read these instructions carefully before using the product to ensure proper function and security.

ചിത്രം 1: മുൻഭാഗം view of the Master Lock MLK5400D Key Box, showing the combination dials and shackle.
2 സുരക്ഷാ വിവരങ്ങൾ
ഇനിപ്പറയുന്ന സുരക്ഷാ മുൻകരുതലുകൾ എപ്പോഴും നിരീക്ഷിക്കുക:
- Do not attempt to force the lock mechanism. This can cause damage and void the warranty.
- Keep the key box away from extreme temperatures and harsh chemicals, which may affect its material integrity and functionality.
- Ensure the combination is set to a memorable sequence that is not easily guessed.
- Regularly check the shackle and body for any signs of wear or damage. Discontinue use if significant damage is observed.
3. പാക്കേജ് ഉള്ളടക്കം
Your Master Lock MLK5400D package should contain the following item:
- One (1) Master Lock MLK5400D Locking Combination 5 Key Steel Box
4. Setting Your Combination
The Master Lock MLK5400D comes with a preset combination (usually 0-0-0-0). Follow these steps to set your personal combination:
- Open the Key Box: Enter the current combination (factory set to 0-0-0-0) and pull down the shackle to open the key box.
- Locate the Reset Lever: Inside the key compartment, locate the reset lever. It is typically on the back wall or side.
- Move the Reset Lever: Using a small, pointed object (like a pen tip), slide the reset lever from position A to position B (or from UP to DOWN, depending on the model).
- പുതിയ കോമ്പിനേഷൻ സജ്ജമാക്കുക: With the reset lever in the reset position, rotate the dials to your desired new combination. Choose a combination that is easy for you to remember but difficult for others to guess.
- Return Reset Lever: Slide the reset lever back to its original position (position A or UP). This locks in your new combination.
- Test New Combination: Close the key box and scramble the dials. Then, enter your new combination and open the key box to verify it works correctly.

ചിത്രം 2: വശം view of the Master Lock MLK5400D Key Box, illustrating the shackle mechanism.
5. Operating the Key Box
To use your Master Lock MLK5400D Key Box:
- Open the Key Box: Rotate the combination dials to your set combination. Pull down the shackle to open the key box.
- Insert/Remove Keys: Place the keys you wish to store inside the compartment. Ensure they fit without obstructing the closing mechanism.
- അടച്ച് സുരക്ഷിതമാക്കുക: Close the shackle firmly until it clicks into place.
- Scramble Dials: After closing, scramble the combination dials to secure the key box and prevent unauthorized access.

Figure 3: The Master Lock MLK5400D Key Box securely mounted on a door, demonstrating its typical application.
6. പരിപാലനം
Proper maintenance ensures the longevity and reliable operation of your key box:
- വൃത്തിയാക്കൽ: ഒരു സോഫ്റ്റ്, ഡി ഉപയോഗിച്ച് പുറംഭാഗം തുടയ്ക്കുകamp തുണി. ഉരച്ചിലുകൾ ഉണ്ടാക്കുന്ന ക്ലീനറുകളോ ലായകങ്ങളോ ഒഴിവാക്കുക.
- ലൂബ്രിക്കേഷൻ: Periodically apply a small amount of silicone-based lubricant to the shackle and internal moving parts to ensure smooth operation, especially in outdoor environments.
- പരിശോധന: Regularly inspect the key box for any signs of wear, corrosion, or damage. Address any issues promptly.
7. പ്രശ്നപരിഹാരം
If you encounter issues with your Master Lock MLK5400D, consider the following:
- Key Box Will Not Open:
- Ensure you are entering the correct combination. Double-check each digit.
- Make sure the dials are aligned precisely with the indicator marks.
- Apply slight pressure to the shackle while entering the combination, then release.
- Dials Are Stiff:
- Clean the dials and apply a small amount of silicone lubricant.
- Ensure no debris is lodged between the dials.
- Forgot Combination:
- Unfortunately, if the combination is forgotten and the key box is locked, there is no master key or backdoor to open it. You may need to contact Master Lock support for options, which might involve professional assistance or replacement.
8 സ്പെസിഫിക്കേഷനുകൾ
| ഫീച്ചർ | വിശദാംശങ്ങൾ |
|---|---|
| ബ്രാൻഡ് | മാസ്റ്റർ ലോക്ക് |
| മോഡൽ നമ്പർ | MLK5400D (Part Number: 1995234) |
| ലോക്ക് തരം | കോമ്പിനേഷൻ ലോക്ക് |
| മെറ്റീരിയൽ | അലോയ് സ്റ്റീൽ |
| നിറം | Black, Black/Silver |
| ഇനത്തിന്റെ അളവുകൾ (L x W x H) | 8.81 x 5.31 x 2.06 ഇഞ്ച് |
| ഇനത്തിൻ്റെ ഭാരം | 2.34 പൗണ്ട് |
| പ്രത്യേക ഫീച്ചർ | Key Lock (for storing keys) |
9. വാറൻ്റിയും പിന്തുണയും
Master Lock products are manufactured to high-quality standards. For specific warranty information or technical support, please refer to the official Master Lock webസൈറ്റ് അല്ലെങ്കിൽ അവരുടെ ഉപഭോക്തൃ സേവനവുമായി നേരിട്ട് ബന്ധപ്പെടുക.
Master Lock Official Webസൈറ്റ്: www.masterlock.com





