With the introduction of Gatemaster products to our gate lock range, we've put together a simple guide to help you change the code on your Gatemaster combination locks.
You can also download the instructions in a PDF file - click here!
- Remove the keypad(s) by inserting a flat-blade screwdriver into the hole in the faceplate, adjacent to the metal lever plate (pictured on the right).
This will remove the outer facing keypad, and if yours has an internal keypad too, this one can then be removed by undoing the screws concealed beneath the outer keypad. - On the back of each keypad, there are four red screws which hold the backplate in place - take care undoing these screws and removing the backplate as there are 10 springs attached underneath!
- Once the backplate is removed, the combination chamber will be exposed, showing blue marked tumblers, red marked tumbers, and one unmarked tumber. Take note that the tumblers showing red represent the numbers used in the existing code, the tumblers showing blue represent the unused numbers, and the final unmarked tumbler is always for the 'C' button and should not be removed.
- In order to set a new code, hold the keypad face-down (so you're looking at the back of the unit into the combination chamber) whilst holding down the C button (this is very important, otherwise damage can be caused to the chamber), and swap over the red tumblers into the slots of the numbers you want for the new code, making sure to carefully place them facing the correct way (the square cut-out should be facing outward, and the coloured marking faces upwards to the top of the lock). Any mis-placing of these tumblers could cause irreparable damage.
- Once satisfied that the tumblers are set in the positions you want for your new code, you can replace the back cover plate and tighten up the four red screws.
- Check that your new code is working correctly before re-fitting to the main lock body.
