Instructions and FAQs

3 Wheel Combination Instructions

Please read the whole of the following instructions before operating the lock or changing the combination

In Figure 1 below, you will see two index marks printed on the dial ring. Index mark A is to be used to open the lock and index mark B to change the combination.

Always turn the dial slowly and evenly. Each time you align the combination number with an index mark, it is considered one revolution is completed. If you over dial do not turn the dial back to compensate, merely restart the sequence from the beginning.

Figure 1. Dials showing index marks

3 Wheel Combination Instructions

Unlocking the lock with the preset combination (50) for a 3 Wheel Combination

  1. Turn the dial counter clockwise for four revolutions
  2. Turn the dial clockwise until the bolt retracts

Unlocking the lock with a three- number combination (e.g. 50-25-50) for a 3 Wheel Combination

  1. Turn the dial counter clockwise for four revolutions, aligning the 50 mark with the index mark A, four times
  2. Turn the dial clockwise for three revolutions, aligning the number 25 mark with the index mark A, three times
  3. Turn the dial counter clockwise for two revolutions, aligning the 50 mark with index mark A, two times
  4. Turn the dial slowly clockwise until the bolt retracts

Locking the Lock for a 3 Wheel Combination

Turn the dial counter clockwise for at least four revolutions

Changing the combination of a 3 Wheel Combination lock

You may select three new combination numbers. For the last number, DO NOT use any number between 0 and 20. For maximum security, do not use numbers that end in 0 or 5, and do not use numbers in ascending or descending order. For example, 27-86-48 is more secure than 27-48-86.

WARNING: Never insert the change key into the lock while the cover is removed. Before turning the change key, ensure that the wing of the key is fully inserted into the lock.

  1. Dial the current combination to open the lock using index mark A and open the container door.
    See above the instructions on ‘Unlocking the lock with the preset combination’ or ‘Unlocking the lock with a three-number combination’.
  2. Dial the current combination again using index mark B.
    Note: It night be helpful to cover A with tape when changing the combination
  3. With the last number aligned with index mark B, hold the dial securely in place so that it does not turn. Insert the change key into the keyhole in the back of the lock.
  4. Ensure that the wing of the key is completely inside the lock and comes to a positive stop, then turn the key 90⁰ counter clockwise (see Figure 2).

Figure 2. Turning the key counter clockwise

Turning the key counter clockwise

With the change key in the turned position, set the new combination as follows:

  1. Turn the dial counter clockwise for four revolutions, aligning the first number of the new combination with index mark B, four times.
  2. Turn the dial clockwise for three revolutions, aligning the second number with index mark B three times.
  3. Turn the dial counter clockwise for two revolutions, aligning the third number with index mark B, two times.
  4. With the last number of the new combination aligned with index mark B, hold the dial securely in place and turn the change key 90⁰ clockwise and remove it (see Figure 3)

Figure 3. Turning the key clockwise

Turning the key clockwise

LG Basic FAQs

Figure 4: LG Combo 3750 electronic entry device

LG Combo 3750 Electronic Entry Device

Audio and Visual Signals

During the operation of this lock, it will communicate with the following signals

  • Double signal *(LED flashes and unit beeps) indicates entry is valid or accepted
  • Triple signal indicates invalid of not accepted

Invalid Code Entry– lock will signal three (3) times

Wrong Try Penalty

  • Entry of four (4) consecutive invalid codes starts a 5 minute delay period: LED flashes red at ten (10) second intervals
  • At the end of the delay period, two more consecutive invalid codes will restart and additional 5 minute delay period

Entry will not respond to a single keystroke during delay period.

Changing your code

Always perform this operation with the door open

  1. Enter ‘zero’ six times
  2. Enter your existing six (6) digit code once
  3. Enter your new six (6) digit code two times
  4. If a mistake is made wait thirty (30) seconds and repeat steps 1 to 3
  5. Test lock operation several times before closing door.

Valid Code Entry– Double signal after valid six (6) digit code is entered

Invalid Code Entry– Triple signal and old code is still valid

Battery Low Warning

  • Repeated beeping during an opening indicates that the battery is low and needs immediate replacement.
  • Use one (1) 9-volt alkaline battery. It is recommended to replace batteries annually.

If internal battery is depleted and will not allow lock to open, simply follow the instructions below. Lock contains a non-volatile memory, even with batteries removed; the lock will retain all programming.