Why Is a Fire Door Closer Arm Hitting the Frame?

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 The closer arm touches the frame, stop, architrave, wall or another component during opening or closing. The contact may occur only at a particular angle, which is an important clue. Map the full movement Open and close the door through its normal range and identify the exact point where the arm fouls. Look…