Door Closer Settings Explained: Main Speed, Latching and Backcheck

A door closer may use separate controls for the main closing swing and the final latching movement. In dormakaba’s TS 73 V brochure (Oct 2021), two closing-speed valves cover 180°–15° and 15°–0°. That is a model-specific example, not a universal setting.

Tell the functions apart

• Main closing speed governs most of the door’s return; note if it rushes through this part.
• Latching action affects the final movement toward the frame; distinguish it from the main swing.
• Backcheck resists opening on models equipped with it; it is not a closing-speed control.
• Delayed action is a separate feature on some models that slows part of the closing cycle.

Before adjusting

Observe when the issue occurs, find the closer’s exact model, and follow its official instructions. Valve locations and adjustment directions vary. ASSA ABLOY says its installation videos supplement, not replace, official instructions. If the closer leaks, the door fails to latch, or it is on a fire/smoke door, have a qualified installer inspect it rather than guessing. If the latch binds, first check door alignment. For assistance, contact Jinnah.