Your pella sliding door has a built in latching mechanism that extends into the lock strike when you place the latch in the locked position.
How to adjust lock on sliding door.
If it s too low use a flat pry bar to raise the door while you turn the adjusting screw clockwise.
The first step in how to.
The lock will not engage if the engagement tongue goes above or below the logo.
If you find that the engagement tongue is going above or below the logo you will have to adjust the lock.
This video will show you how to properly adjust the lock and handle on your milgard sliding glass door.
Adjust sliding glass door lock handle is using a putty knife remove the strike plate to access the adjustment screw.
Download instructions for more information.
Regular vacuuming of the track will help keep the door sliding smoothly.