2022/12/30

What is the overhead door closer "back check" function for?

What is the overhead door closer "back check"  function for?

Table of content
1. Back check purpose
2. When do we need it?

1. Back Check purpose
Back Check” purpose is to stop the door from slamming open

Case 1:
On an external door in a windy location back-check prevents the wind from “picking up” and opening the door
(which might damage the frame at the hinges)



Case 2:
When there is a wall at 90° from the door back-check stops damage to the wall & door handles by preventing slamming open.


example:


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