The door closing speed and the latching speed are controlled by the speed regulating screws.

• No 1. section is to be adjusted with No 1 speed regulating screw.
• No 2 section with No 2 speed regulating screw.

Turn clockwise to reduce speed. Turn counterclockwise to increase speed.

Regulating backcheck

• The power of the backcheck action is regulated by the valve shown. Turn clockwise to increase or counterclockwise to decrease