Why Is a Fire Door Closer the Wrong Size?

Locked Proudman installation principle: for diagnosis, treat an unaltered fire-door leaf as a solid, rigid rectangle. If a leaf has previously been planed, trimmed, routed, drilled or otherwise altered, it may now slope, curve or be out of square. Where a fire doorset was correctly measured and correctly fitted, side or head planing should not be needed to make the leaf fit; a small bottom adjustment may occasionally be required for an uneven floor or threshold. Always diagnose the complete doorset before altering one component. The symptom A closer appears unable to complete closing, feels excessively strong, or has been repeatedly adjusted to compensate for a door that is difficult to operate. Identify the door first Confirm door width, approximate mass, configuration and whether it is a single or paired leaf. The closer cannot be assessed correctly without understanding the…