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FAQs

Can the LCN 6440XP compact operator be used with cylinders other than the 4040XP?

Resolution: The LCN 6440 compact operator is designed for the 4040XP (standard or delay) cylinders only, using it on other closers with similar spindle will void warranty and certifications.The older 4041 can ...:

Do automatic door bottoms drop evenly or from the hinge side first?

Resolution: With the exception of the 7350, the Zero automatic door bottoms do drop from the hinge side first. :

How do I increase tension on an automatic door bottom?

Resolution: Rotate the tension adjusting screw counterclockwise. The screw (brass nut) is located on the hinge side of the door. Instruction sheets for Zero automatic door bottoms can be found at&nb...:

Does increasing tension on an automatic door bottom (ADB) increase door closing force?

Resolution: Yes. Increasing tension on an automatic door bottom will increase pressure on the door closer. The door closer may have to be adjusted to compensate. :

Will a Zero automatic door bottom (ADB) work on an uneven floor?

Resolution: The automatic door bottom may work on an uneven floor by adjusting the tension as long as the slope difference on the floor from hinge edge to the active edge does not exceed 3/8". If using a surfa...:

Why is it hard to close a door while using a Zero 188S seal?

Resolution: Change the seal to a 488S. The smaller profile may allow the door to close easier than the 488S in some applications. :

Is there a way to solve a draft on my existing door?

Resolution: The Zero 475 can be added to the stops of the frame. If there are areas where the 475 cannot be placed on the frame stop, strips of the 488S can be used in those small locations. :

What is an HW device or HW mullion?

Resolution: HW is Allegion-specific nomenclature used when specifying hurricane rated devices and mullions that are for use in non-impact (Wind-Only) hurricane zones. The devices may require special st...:

What degree of opening swing can the LCN 6440XP Compact Operator be set to?

Resolution: The LCN 6440XP Compact Operator is designed to be calibrated and set up for 70-110 degree of powered opening.:

Does Schlage or Falcon offer a blank rim cylinder?

Resolution: Schlage and Falcon does not offer a blank rim cylinder. :