qel time adjustment

RELATED FAQS

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Regular LCN closers have "3" regulating valves for General Speed, Latch Speed, and Backcheck. If the LCN closer has "4" regulating valves, then the closer has the Delayed Action feature. De...
  Pushing on the push  bar or activating the EL/QEL or the trim on Von Duprin XP98/99 exit device does not retract the latch, it releases the latch only. Door must be pushed or pulled when device o...
Yes the Von Duprin QEL exit device retracts the latch bolt and pushpad. Pushpad and latch bolt stay retracted as long as power is applied to the QEL exit device.
Kits are available per the following criteria.    Product Bulletin Required Series 94 or 95 Fire or Panic 3FT/4FT or 2 ft 6 in / 2 ft 10 in Finish  Optional LX...
To adjust the hold open time on a 4600 (4630/4640) operator: Press the "MODE" button on the control box 1 time to get into programming mode. The "YELLOW" mode indicator LED next to "HOLD OPEN TI...
The QEL exit devices that were shipped prior to August, 2012 will only communicate to the PS873 with 871-2Q option board or PS900 series with 900-2Q option board. If you...
Try the steps below to improve the hold open adjustment. Remove hold open nut  Apply a couple drops of blue loctite to the threads. Re-assemble, and reset hold open. Let loctite set up overn...
LCN started putting on the green dials for the spring adjustment on the 4041's in 2001.
Improper mechanical adjustment or QEL calibration could cause the QEL cycle three times with solid LED and not work. First check mechanical adjustment on vertical rods or mortise lock device and co...